summaryrefslogtreecommitdiff
path: root/target/linux/generic/patches-2.6.37/501-yaffs_cvs_2009_04_24.patch
blob: c334b17d0872a877f52cd9c0e4234ad118df7d09 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
--- a/fs/yaffs2/devextras.h
+++ b/fs/yaffs2/devextras.h
@@ -14,194 +14,135 @@
  */
 
 /*
- * This file is just holds extra declarations used during development.
- * Most of these are from kernel includes placed here so we can use them in
- * applications.
+ * This file is just holds extra declarations of macros that would normally
+ * be providesd in the Linux kernel. These macros have been written from
+ * scratch but are functionally equivalent to the Linux ones.
  *
  */
 
 #ifndef __EXTRAS_H__
 #define __EXTRAS_H__
 
-#if defined WIN32
-#define __inline__ __inline
-#define new newHack
-#endif
-
-#if !(defined __KERNEL__) || (defined WIN32)
 
-/* User space defines */
+#if !(defined __KERNEL__)
 
+/* Definition of types */
 typedef unsigned char __u8;
 typedef unsigned short __u16;
 typedef unsigned __u32;
 
+#endif
+
 /*
- * Simple doubly linked list implementation.
- *
- * Some of the internal functions ("__xxx") are useful when
- * manipulating whole lists rather than single entries, as
- * sometimes we already know the next/prev entries and we can
- * generate better code by using them directly rather than
- * using the generic single-entry routines.
+ * This is a simple doubly linked list implementation that matches the
+ * way the Linux kernel doubly linked list implementation works.
  */
 
-#define prefetch(x) 1
-
-struct list_head {
-	struct list_head *next, *prev;
+struct ylist_head {
+	struct ylist_head *next; /* next in chain */
+	struct ylist_head *prev; /* previous in chain */
 };
 
-#define LIST_HEAD_INIT(name) { &(name), &(name) }
 
-#define LIST_HEAD(name) \
-	struct list_head name = LIST_HEAD_INIT(name)
+/* Initialise a static list */
+#define YLIST_HEAD(name) \
+struct ylist_head name = { &(name), &(name)}
+
 
-#define INIT_LIST_HEAD(ptr) do { \
-	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
+
+/* Initialise a list head to an empty list */
+#define YINIT_LIST_HEAD(p) \
+do { \
+	(p)->next = (p);\
+	(p)->prev = (p); \
 } while (0)
 
-/*
- * Insert a new entry between two known consecutive entries.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static __inline__ void __list_add(struct list_head *new,
-				  struct list_head *prev,
-				  struct list_head *next)
-{
-	next->prev = new;
-	new->next = next;
-	new->prev = prev;
-	prev->next = new;
-}
 
-/**
- * list_add - add a new entry
- * @new: new entry to be added
- * @head: list head to add it after
- *
- * Insert a new entry after the specified head.
- * This is good for implementing stacks.
- */
-static __inline__ void list_add(struct list_head *new, struct list_head *head)
+/* Add an element to a list */
+static __inline__ void ylist_add(struct ylist_head *newEntry,
+				struct ylist_head *list)
 {
-	__list_add(new, head, head->next);
-}
+	struct ylist_head *listNext = list->next;
+
+	list->next = newEntry;
+	newEntry->prev = list;
+	newEntry->next = listNext;
+	listNext->prev = newEntry;
 
-/**
- * list_add_tail - add a new entry
- * @new: new entry to be added
- * @head: list head to add it before
- *
- * Insert a new entry before the specified head.
- * This is useful for implementing queues.
- */
-static __inline__ void list_add_tail(struct list_head *new,
-				     struct list_head *head)
-{
-	__list_add(new, head->prev, head);
 }
 
-/*
- * Delete a list entry by making the prev/next entries
- * point to each other.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static __inline__ void __list_del(struct list_head *prev,
-				  struct list_head *next)
+static __inline__ void ylist_add_tail(struct ylist_head *newEntry,
+				 struct ylist_head *list)
 {
-	next->prev = prev;
-	prev->next = next;
+	struct ylist_head *listPrev = list->prev;
+
+	list->prev = newEntry;
+	newEntry->next = list;
+	newEntry->prev = listPrev;
+	listPrev->next = newEntry;
+
 }
 
-/**
- * list_del - deletes entry from list.
- * @entry: the element to delete from the list.
- * Note: list_empty on entry does not return true after this, the entry is
- * in an undefined state.
- */
-static __inline__ void list_del(struct list_head *entry)
+
+/* Take an element out of its current list, with or without
+ * reinitialising the links.of the entry*/
+static __inline__ void ylist_del(struct ylist_head *entry)
 {
-	__list_del(entry->prev, entry->next);
+	struct ylist_head *listNext = entry->next;
+	struct ylist_head *listPrev = entry->prev;
+
+	listNext->prev = listPrev;
+	listPrev->next = listNext;
+
 }
 
-/**
- * list_del_init - deletes entry from list and reinitialize it.
- * @entry: the element to delete from the list.
- */
-static __inline__ void list_del_init(struct list_head *entry)
+static __inline__ void ylist_del_init(struct ylist_head *entry)
 {
-	__list_del(entry->prev, entry->next);
-	INIT_LIST_HEAD(entry);
+	ylist_del(entry);
+	entry->next = entry->prev = entry;
 }
 
-/**
- * list_empty - tests whether a list is empty
- * @head: the list to test.
- */
-static __inline__ int list_empty(struct list_head *head)
+
+/* Test if the list is empty */
+static __inline__ int ylist_empty(struct ylist_head *entry)
 {
-	return head->next == head;
+	return (entry->next == entry);
 }
 
-/**
- * list_splice - join two lists
- * @list: the new list to add.
- * @head: the place to add it in the first list.
+
+/* ylist_entry takes a pointer to a list entry and offsets it to that
+ * we can find a pointer to the object it is embedded in.
  */
-static __inline__ void list_splice(struct list_head *list,
-				   struct list_head *head)
-{
-	struct list_head *first = list->next;
 
-	if (first != list) {
-		struct list_head *last = list->prev;
-		struct list_head *at = head->next;
-
-		first->prev = head;
-		head->next = first;
-
-		last->next = at;
-		at->prev = last;
-	}
-}
 
-/**
- * list_entry - get the struct for this entry
- * @ptr:	the &struct list_head pointer.
- * @type:	the type of the struct this is embedded in.
- * @member:	the name of the list_struct within the struct.
- */
-#define list_entry(ptr, type, member) \
-	((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-
-/**
- * list_for_each	-	iterate over a list
- * @pos:	the &struct list_head to use as a loop counter.
- * @head:	the head for your list.
- */
-#define list_for_each(pos, head) \
-	for (pos = (head)->next, prefetch(pos->next); pos != (head); \
-        	pos = pos->next, prefetch(pos->next))
-
-/**
- * list_for_each_safe	-	iterate over a list safe against removal
- *                              of list entry
- * @pos:	the &struct list_head to use as a loop counter.
- * @n:		another &struct list_head to use as temporary storage
- * @head:	the head for your list.
- */
-#define list_for_each_safe(pos, n, head) \
-	for (pos = (head)->next, n = pos->next; pos != (head); \
-		pos = n, n = pos->next)
+#define ylist_entry(entry, type, member) \
+	((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
 
-/*
- * File types
+
+/* ylist_for_each and list_for_each_safe  iterate over lists.
+ * ylist_for_each_safe uses temporary storage to make the list delete safe
  */
+
+#define ylist_for_each(itervar, list) \
+	for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
+
+#define ylist_for_each_safe(itervar, saveVar, list) \
+	for (itervar = (list)->next, saveVar = (list)->next->next; \
+		itervar != (list); itervar = saveVar, saveVar = saveVar->next)
+
+
+#if !(defined __KERNEL__)
+
+
+#ifndef WIN32
+#include <sys/stat.h>
+#endif
+
+
+#ifdef CONFIG_YAFFS_PROVIDE_DEFS
+/* File types */
+
+
 #define DT_UNKNOWN	0
 #define DT_FIFO		1
 #define DT_CHR		2
@@ -212,6 +153,7 @@ static __inline__ void list_splice(struc
 #define DT_SOCK		12
 #define DT_WHT		14
 
+
 #ifndef WIN32
 #include <sys/stat.h>
 #endif
@@ -227,10 +169,6 @@ static __inline__ void list_splice(struc
 #define ATTR_ATIME	16
 #define ATTR_MTIME	32
 #define ATTR_CTIME	64
-#define ATTR_ATIME_SET	128
-#define ATTR_MTIME_SET	256
-#define ATTR_FORCE	512	/* Not a change, but a change it */
-#define ATTR_ATTR_FLAG	1024
 
 struct iattr {
 	unsigned int ia_valid;
@@ -244,21 +182,15 @@ struct iattr {
 	unsigned int ia_attr_flags;
 };
 
-#define KERN_DEBUG
+#endif
 
 #else
 
-#ifndef WIN32
 #include <linux/types.h>
-#include <linux/list.h>
 #include <linux/fs.h>
 #include <linux/stat.h>
-#endif
 
 #endif
 
-#if defined WIN32
-#undef new
-#endif
 
 #endif
--- a/fs/yaffs2/Kconfig
+++ b/fs/yaffs2/Kconfig
@@ -5,7 +5,7 @@
 config YAFFS_FS
 	tristate "YAFFS2 file system support"
 	default n
-	depends on MTD
+	depends on MTD_BLOCK
 	select YAFFS_YAFFS1
 	select YAFFS_YAFFS2
 	help
@@ -43,7 +43,8 @@ config YAFFS_9BYTE_TAGS
 	  format that you need to continue to support.  New data written
 	  also uses the older-style format.  Note: Use of this option
 	  generally requires that MTD's oob layout be adjusted to use the
-	  older-style format.  See notes on tags formats and MTD versions.
+	  older-style format.  See notes on tags formats and MTD versions
+	  in yaffs_mtdif1.c.
 
 	  If unsure, say N.
 
@@ -109,26 +110,6 @@ config YAFFS_DISABLE_LAZY_LOAD
 
 	  If unsure, say N.
 
-config YAFFS_CHECKPOINT_RESERVED_BLOCKS
-	int "Reserved blocks for checkpointing"
-	depends on YAFFS_YAFFS2
-	default 10
-	help
-          Give the number of Blocks to reserve for checkpointing.
-	  Checkpointing saves the state at unmount so that mounting is
-	  much faster as a scan of all the flash to regenerate this state
-	  is not needed.  These Blocks are reserved per partition, so if
-	  you have very small partitions the default (10) may be a mess
-	  for you.  You can set this value to 0, but that does not mean
-	  checkpointing is disabled at all. There only won't be any
-	  specially reserved blocks for checkpointing, so if there is
-	  enough free space on the filesystem, it will be used for
-	  checkpointing.
-
-	  If unsure, leave at default (10), but don't wonder if there are
-	  always 2MB used on your large page device partition (10 x 2k
-	  pagesize). When using small partitions or when being very small
-	  on space, you probably want to set this to zero.
 
 config YAFFS_DISABLE_WIDE_TNODES
 	bool "Turn off wide tnodes"
--- a/fs/yaffs2/Makefile
+++ b/fs/yaffs2/Makefile
@@ -5,7 +5,6 @@
 obj-$(CONFIG_YAFFS_FS) += yaffs.o
 
 yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
-yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
+yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
 yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
-yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o
-yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o
+yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
--- a/fs/yaffs2/moduleconfig.h
+++ b/fs/yaffs2/moduleconfig.h
@@ -27,12 +27,12 @@
 
 /* Default: Not selected */
 /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
-//#define CONFIG_YAFFS_DOES_ECC
+/* #define CONFIG_YAFFS_DOES_ECC */
 
 /* Default: Not selected */
 /* Meaning: ECC byte order is 'wrong'.  Only meaningful if */
 /*          CONFIG_YAFFS_DOES_ECC is set */
-//#define CONFIG_YAFFS_ECC_WRONG_ORDER
+/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
 
 /* Default: Selected */
 /* Meaning: Disables testing whether chunks are erased before writing to them*/
@@ -54,11 +54,11 @@ that you need to continue to support.  N
 older-style format.
 Note: Use of this option generally requires that MTD's oob layout be
 adjusted to use the older-style format.  See notes on tags formats and
-MTD versions.
+MTD versions in yaffs_mtdif1.c.
 */
 /* Default: Not selected */
 /* Meaning: Use older-style on-NAND data format with pageStatus byte */
-#define CONFIG_YAFFS_9BYTE_TAGS
+/* #define CONFIG_YAFFS_9BYTE_TAGS */
 
 #endif /* YAFFS_OUT_OF_TREE */
 
--- a/fs/yaffs2/yaffs_checkptrw.c
+++ b/fs/yaffs2/yaffs_checkptrw.c
@@ -12,48 +12,43 @@
  */
 
 const char *yaffs_checkptrw_c_version =
-    "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $";
+	"$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $";
 
 
 #include "yaffs_checkptrw.h"
-
+#include "yaffs_getblockinfo.h"
 
 static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
 {
-
 	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
 
 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("checkpt blocks available = %d" TENDSTR),
 		blocksAvailable));
 
-
 	return (blocksAvailable <= 0) ? 0 : 1;
 }
 
 
 static int yaffs_CheckpointErase(yaffs_Device *dev)
 {
-
 	int i;
 
-
-	if(!dev->eraseBlockInNAND)
+	if (!dev->eraseBlockInNAND)
 		return 0;
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR),
-		dev->internalStartBlock,dev->internalEndBlock));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
+		dev->internalStartBlock, dev->internalEndBlock));
 
-	for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
-		if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){
-			T(YAFFS_TRACE_CHECKPOINT,(TSTR("erasing checkpt block %d"TENDSTR),i));
-			if(dev->eraseBlockInNAND(dev,i- dev->blockOffset /* realign */)){
+	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+		if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
+			T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
+			if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
 				bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
 				dev->nErasedBlocks++;
 				dev->nFreeChunks += dev->nChunksPerBlock;
-			}
-			else {
-				dev->markNANDBlockBad(dev,i);
+			} else {
+				dev->markNANDBlockBad(dev, i);
 				bi->blockState = YAFFS_BLOCK_STATE_DEAD;
 			}
 		}
@@ -71,23 +66,23 @@ static void yaffs_CheckpointFindNextEras
 	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
-		dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock));
+		dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock));
 
-	if(dev->checkpointNextBlock >= 0 &&
-	   dev->checkpointNextBlock <= dev->internalEndBlock &&
-	   blocksAvailable > 0){
-
-		for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
-			if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){
+	if (dev->checkpointNextBlock >= 0 &&
+			dev->checkpointNextBlock <= dev->internalEndBlock &&
+			blocksAvailable > 0) {
+
+		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
+			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
 				dev->checkpointNextBlock = i + 1;
 				dev->checkpointCurrentBlock = i;
-				T(YAFFS_TRACE_CHECKPOINT,(TSTR("allocating checkpt block %d"TENDSTR),i));
+				T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
 				return;
 			}
 		}
 	}
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));
 
 	dev->checkpointNextBlock = -1;
 	dev->checkpointCurrentBlock = -1;
@@ -98,30 +93,31 @@ static void yaffs_CheckpointFindNextChec
 	int  i;
 	yaffs_ExtendedTags tags;
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
 		dev->blocksInCheckpoint, dev->checkpointNextBlock));
 
-	if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
-		for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
+	if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
+		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
 			int chunk = i * dev->nChunksPerBlock;
 			int realignedChunk = chunk - dev->chunkOffset;
 
-			dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags);
-			T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
-				i, tags.objectId,tags.sequenceNumber,tags.eccResult));
+			dev->readChunkWithTagsFromNAND(dev, realignedChunk,
+					NULL, &tags);
+			T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
+				i, tags.objectId, tags.sequenceNumber, tags.eccResult));
 
-			if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){
+			if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
 				/* Right kind of block */
 				dev->checkpointNextBlock = tags.objectId;
 				dev->checkpointCurrentBlock = i;
 				dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
 				dev->blocksInCheckpoint++;
-				T(YAFFS_TRACE_CHECKPOINT,(TSTR("found checkpt block %d"TENDSTR),i));
+				T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
 				return;
 			}
 		}
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("found no more checkpt blocks"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));
 
 	dev->checkpointNextBlock = -1;
 	dev->checkpointCurrentBlock = -1;
@@ -133,17 +129,17 @@ int yaffs_CheckpointOpen(yaffs_Device *d
 
 	/* Got the functions we need? */
 	if (!dev->writeChunkWithTagsToNAND ||
-	    !dev->readChunkWithTagsFromNAND ||
-	    !dev->eraseBlockInNAND ||
-	    !dev->markNANDBlockBad)
+			!dev->readChunkWithTagsFromNAND ||
+			!dev->eraseBlockInNAND ||
+			!dev->markNANDBlockBad)
 		return 0;
 
-	if(forWriting && !yaffs_CheckpointSpaceOk(dev))
+	if (forWriting && !yaffs_CheckpointSpaceOk(dev))
 		return 0;
 
-	if(!dev->checkpointBuffer)
-		dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
+		dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
+	if (!dev->checkpointBuffer)
 		return 0;
 
 
@@ -159,12 +155,10 @@ int yaffs_CheckpointOpen(yaffs_Device *d
 	dev->checkpointNextBlock = dev->internalStartBlock;
 
 	/* Erase all the blocks in the checkpoint area */
-	if(forWriting){
-		memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
+	if (forWriting) {
+		memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
 		dev->checkpointByteOffset = 0;
 		return yaffs_CheckpointErase(dev);
-
-
 	} else {
 		int i;
 		/* Set to a value that will kick off a read */
@@ -174,7 +168,7 @@ int yaffs_CheckpointOpen(yaffs_Device *d
 		dev->blocksInCheckpoint = 0;
 		dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
 		dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
-		for(i = 0; i < dev->checkpointMaxBlocks; i++)
+		for (i = 0; i < dev->checkpointMaxBlocks; i++)
 			dev->checkpointBlockList[i] = -1;
 	}
 
@@ -191,18 +185,17 @@ int yaffs_GetCheckpointSum(yaffs_Device
 
 static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
 {
-
 	int chunk;
 	int realignedChunk;
 
 	yaffs_ExtendedTags tags;
 
-	if(dev->checkpointCurrentBlock < 0){
+	if (dev->checkpointCurrentBlock < 0) {
 		yaffs_CheckpointFindNextErasedBlock(dev);
 		dev->checkpointCurrentChunk = 0;
 	}
 
-	if(dev->checkpointCurrentBlock < 0)
+	if (dev->checkpointCurrentBlock < 0)
 		return 0;
 
 	tags.chunkDeleted = 0;
@@ -210,10 +203,10 @@ static int yaffs_CheckpointFlushBuffer(y
 	tags.chunkId = dev->checkpointPageSequence + 1;
 	tags.sequenceNumber =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
 	tags.byteCount = dev->nDataBytesPerChunk;
-	if(dev->checkpointCurrentChunk == 0){
+	if (dev->checkpointCurrentChunk == 0) {
 		/* First chunk we write for the block? Set block state to
 		   checkpoint */
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointCurrentBlock);
+		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock);
 		bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
 		dev->blocksInCheckpoint++;
 	}
@@ -221,28 +214,29 @@ static int yaffs_CheckpointFlushBuffer(y
 	chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
 
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
-		chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
+		chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId));
 
 	realignedChunk = chunk - dev->chunkOffset;
 
-	dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags);
+	dev->writeChunkWithTagsToNAND(dev, realignedChunk,
+			dev->checkpointBuffer, &tags);
 	dev->checkpointByteOffset = 0;
 	dev->checkpointPageSequence++;
 	dev->checkpointCurrentChunk++;
-	if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
+	if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) {
 		dev->checkpointCurrentChunk = 0;
 		dev->checkpointCurrentBlock = -1;
 	}
-	memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
+	memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
 
 	return 1;
 }
 
 
-int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
+int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
 {
-	int i=0;
+	int i = 0;
 	int ok = 1;
 
 
@@ -250,17 +244,14 @@ int yaffs_CheckpointWrite(yaffs_Device *
 
 
 
-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
 		return 0;
 
-	if(!dev->checkpointOpenForWrite)
+	if (!dev->checkpointOpenForWrite)
 		return -1;
 
-	while(i < nBytes && ok) {
-
-
-
-		dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
+	while (i < nBytes && ok) {
+		dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes;
 		dev->checkpointSum += *dataBytes;
 		dev->checkpointXor ^= *dataBytes;
 
@@ -270,18 +261,17 @@ int yaffs_CheckpointWrite(yaffs_Device *
 		dev->checkpointByteCount++;
 
 
-		if(dev->checkpointByteOffset < 0 ||
+		if (dev->checkpointByteOffset < 0 ||
 		   dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
 			ok = yaffs_CheckpointFlushBuffer(dev);
-
 	}
 
-	return 	i;
+	return i;
 }
 
 int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
 {
-	int i=0;
+	int i = 0;
 	int ok = 1;
 	yaffs_ExtendedTags tags;
 
@@ -291,52 +281,54 @@ int yaffs_CheckpointRead(yaffs_Device *d
 
 	__u8 *dataBytes = (__u8 *)data;
 
-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
 		return 0;
 
-	if(dev->checkpointOpenForWrite)
+	if (dev->checkpointOpenForWrite)
 		return -1;
 
-	while(i < nBytes && ok) {
+	while (i < nBytes && ok) {
 
 
-		if(dev->checkpointByteOffset < 0 ||
-		   dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
+		if (dev->checkpointByteOffset < 0 ||
+			dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
 
-		   	if(dev->checkpointCurrentBlock < 0){
+			if (dev->checkpointCurrentBlock < 0) {
 				yaffs_CheckpointFindNextCheckpointBlock(dev);
 				dev->checkpointCurrentChunk = 0;
 			}
 
-			if(dev->checkpointCurrentBlock < 0)
+			if (dev->checkpointCurrentBlock < 0)
 				ok = 0;
 			else {
-
-				chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
-				          dev->checkpointCurrentChunk;
+				chunk = dev->checkpointCurrentBlock *
+					dev->nChunksPerBlock +
+					dev->checkpointCurrentChunk;
 
 				realignedChunk = chunk - dev->chunkOffset;
 
-	   			/* read in the next chunk */
-	   			/* printf("read checkpoint page %d\n",dev->checkpointPage); */
-				dev->readChunkWithTagsFromNAND(dev, realignedChunk,
-							       dev->checkpointBuffer,
-							      &tags);
-
-				if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
-				   tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
-				   ok = 0;
+				/* read in the next chunk */
+				/* printf("read checkpoint page %d\n",dev->checkpointPage); */
+				dev->readChunkWithTagsFromNAND(dev,
+						realignedChunk,
+						dev->checkpointBuffer,
+						&tags);
+
+				if (tags.chunkId != (dev->checkpointPageSequence + 1) ||
+					tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
+					tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+					ok = 0;
 
 				dev->checkpointByteOffset = 0;
 				dev->checkpointPageSequence++;
 				dev->checkpointCurrentChunk++;
 
-				if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
+				if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
 					dev->checkpointCurrentBlock = -1;
 			}
 		}
 
-		if(ok){
+		if (ok) {
 			*dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
 			dev->checkpointSum += *dataBytes;
 			dev->checkpointXor ^= *dataBytes;
@@ -353,17 +345,17 @@ int yaffs_CheckpointRead(yaffs_Device *d
 int yaffs_CheckpointClose(yaffs_Device *dev)
 {
 
-	if(dev->checkpointOpenForWrite){
-		if(dev->checkpointByteOffset != 0)
+	if (dev->checkpointOpenForWrite) {
+		if (dev->checkpointByteOffset != 0)
 			yaffs_CheckpointFlushBuffer(dev);
 	} else {
 		int i;
-		for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointBlockList[i]);
-			if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
+		for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) {
+			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]);
+			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
 				bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
 			else {
-				// Todo this looks odd...
+				/* Todo this looks odd... */
 			}
 		}
 		YFREE(dev->checkpointBlockList);
@@ -374,27 +366,25 @@ int yaffs_CheckpointClose(yaffs_Device *
 	dev->nErasedBlocks -= dev->blocksInCheckpoint;
 
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR),
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
 			dev->checkpointByteCount));
 
-	if(dev->checkpointBuffer){
+	if (dev->checkpointBuffer) {
 		/* free the buffer */
 		YFREE(dev->checkpointBuffer);
 		dev->checkpointBuffer = NULL;
 		return 1;
-	}
-	else
+	} else
 		return 0;
-
 }
 
 int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
 {
 	/* Erase the first checksum block */
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint invalidate"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR)));
 
-	if(!yaffs_CheckpointSpaceOk(dev))
+	if (!yaffs_CheckpointSpaceOk(dev))
 		return 0;
 
 	return yaffs_CheckpointErase(dev);
--- a/fs/yaffs2/yaffs_checkptrw.h
+++ b/fs/yaffs2/yaffs_checkptrw.h
@@ -20,9 +20,9 @@
 
 int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting);
 
-int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes);
+int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes);
 
-int yaffs_CheckpointRead(yaffs_Device *dev,void *data, int nBytes);
+int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes);
 
 int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum);
 
--- a/fs/yaffs2/yaffs_ecc.c
+++ b/fs/yaffs2/yaffs_ecc.c
@@ -29,7 +29,7 @@
  */
 
 const char *yaffs_ecc_c_version =
-    "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $";
+	"$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $";
 
 #include "yportenv.h"
 
@@ -109,12 +109,10 @@ void yaffs_ECCCalculate(const unsigned c
 		b = column_parity_table[*data++];
 		col_parity ^= b;
 
-		if (b & 0x01)	// odd number of bits in the byte
-		{
+		if (b & 0x01) {		/* odd number of bits in the byte */
 			line_parity ^= i;
 			line_parity_prime ^= ~i;
 		}
-
 	}
 
 	ecc[2] = (~col_parity) | 0x03;
@@ -158,7 +156,7 @@ void yaffs_ECCCalculate(const unsigned c
 	ecc[0] = ~t;
 
 #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
-	// Swap the bytes into the wrong order
+	/* Swap the bytes into the wrong order */
 	t = ecc[0];
 	ecc[0] = ecc[1];
 	ecc[1] = t;
@@ -189,7 +187,7 @@ int yaffs_ECCCorrect(unsigned char *data
 		unsigned bit;
 
 #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
-		// swap the bytes to correct for the wrong order
+		/* swap the bytes to correct for the wrong order */
 		unsigned char t;
 
 		t = d0;
@@ -251,7 +249,7 @@ int yaffs_ECCCorrect(unsigned char *data
  * ECCxxxOther does ECC calcs on arbitrary n bytes of data
  */
 void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
-			     yaffs_ECCOther * eccOther)
+				yaffs_ECCOther *eccOther)
 {
 	unsigned int i;
 
@@ -278,8 +276,8 @@ void yaffs_ECCCalculateOther(const unsig
 }
 
 int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
-			  yaffs_ECCOther * read_ecc,
-			  const yaffs_ECCOther * test_ecc)
+			yaffs_ECCOther *read_ecc,
+			const yaffs_ECCOther *test_ecc)
 {
 	unsigned char cDelta;	/* column parity delta */
 	unsigned lDelta;	/* line parity delta */
@@ -294,8 +292,7 @@ int yaffs_ECCCorrectOther(unsigned char
 		return 0; /* no error */
 
 	if (lDelta == ~lDeltaPrime &&
-	    (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15))
-	{
+	    (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) {
 		/* Single bit (recoverable) error in data */
 
 		bit = 0;
@@ -307,7 +304,7 @@ int yaffs_ECCCorrectOther(unsigned char
 		if (cDelta & 0x02)
 			bit |= 0x01;
 
-		if(lDelta >= nBytes)
+		if (lDelta >= nBytes)
 			return -1;
 
 		data[lDelta] ^= (1 << bit);
@@ -316,7 +313,7 @@ int yaffs_ECCCorrectOther(unsigned char
 	}
 
 	if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
-	     yaffs_CountBits(cDelta)) == 1) {
+			yaffs_CountBits(cDelta)) == 1) {
 		/* Reccoverable error in ecc */
 
 		*read_ecc = *test_ecc;
@@ -326,6 +323,4 @@ int yaffs_ECCCorrectOther(unsigned char
 	/* Unrecoverable error */
 
 	return -1;
-
 }
-
--- a/fs/yaffs2/yaffs_ecc.h
+++ b/fs/yaffs2/yaffs_ecc.h
@@ -13,15 +13,15 @@
  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  */
 
- /*
-  * This code implements the ECC algorithm used in SmartMedia.
-  *
-  * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
-  * The two unused bit are set to 1.
-  * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
-  * blocks are used on a 512-byte NAND page.
-  *
-  */
+/*
+ * This code implements the ECC algorithm used in SmartMedia.
+ *
+ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
+ * The two unused bit are set to 1.
+ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
+ * blocks are used on a 512-byte NAND page.
+ *
+ */
 
 #ifndef __YAFFS_ECC_H__
 #define __YAFFS_ECC_H__
@@ -34,11 +34,11 @@ typedef struct {
 
 void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
 int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
-		     const unsigned char *test_ecc);
+		const unsigned char *test_ecc);
 
 void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
-			     yaffs_ECCOther * ecc);
+			yaffs_ECCOther *ecc);
 int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
-			  yaffs_ECCOther * read_ecc,
-			  const yaffs_ECCOther * test_ecc);
+			yaffs_ECCOther *read_ecc,
+			const yaffs_ECCOther *test_ecc);
 #endif
--- a/fs/yaffs2/yaffs_fs.c
+++ b/fs/yaffs2/yaffs_fs.c
@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 Aleph One Ltd.
+ * Copyright (C) 2002-2009 Aleph One Ltd.
  *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
@@ -32,18 +32,17 @@
  */
 
 const char *yaffs_fs_c_version =
-    "$Id: yaffs_fs.c,v 1.63 2007-09-19 20:35:40 imcd Exp $";
+    "$Id: yaffs_fs.c,v 1.79 2009-03-17 01:12:00 wookey Exp $";
 extern const char *yaffs_guts_c_version;
 
 #include <linux/version.h>
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 #include <linux/config.h>
 #endif
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <linux/list.h>
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/smp_lock.h>
@@ -53,10 +52,12 @@ extern const char *yaffs_guts_c_version;
 #include <linux/string.h>
 #include <linux/ctype.h>
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#include "asm/div64.h"
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 
 #include <linux/statfs.h>	/* Added NCB 15-8-2003 */
-#include <asm/statfs.h>
+#include <linux/statfs.h>
 #define UnlockPage(p) unlock_page(p)
 #define Page_Uptodate(page)	test_bit(PG_uptodate, &(page)->flags)
 
@@ -69,22 +70,45 @@ extern const char *yaffs_guts_c_version;
 #define	BDEVNAME_SIZE		0
 #define	yaffs_devname(sb, buf)	kdevname(sb->s_dev)
 
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0))
 /* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
 #define __user
 #endif
 
 #endif
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26))
+#define YPROC_ROOT  (&proc_root)
+#else
+#define YPROC_ROOT  NULL
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 #define WRITE_SIZE_STR "writesize"
-#define WRITE_SIZE(mtd) (mtd)->writesize
+#define WRITE_SIZE(mtd) ((mtd)->writesize)
 #else
 #define WRITE_SIZE_STR "oobblock"
-#define WRITE_SIZE(mtd) (mtd)->oobblock
+#define WRITE_SIZE(mtd) ((mtd)->oobblock)
 #endif
 
-#include <asm/uaccess.h>
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27))
+#define YAFFS_USE_WRITE_BEGIN_END 1
+#else
+#define YAFFS_USE_WRITE_BEGIN_END 0
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
+static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
+{
+	uint64_t result = partition_size;
+	do_div(result, block_size);
+	return (uint32_t)result;
+}
+#else
+#define YCALCBLOCKS(s, b) ((s)/(b))
+#endif
+
+#include <linux/uaccess.h>
 
 #include "yportenv.h"
 #include "yaffs_guts.h"
@@ -96,28 +120,44 @@ extern const char *yaffs_guts_c_version;
 
 unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
 unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
+unsigned int yaffs_auto_checkpoint = 1;
 
 /* Module Parameters */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-module_param(yaffs_traceMask,uint,0644);
-module_param(yaffs_wr_attempts,uint,0644);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+module_param(yaffs_traceMask, uint, 0644);
+module_param(yaffs_wr_attempts, uint, 0644);
+module_param(yaffs_auto_checkpoint, uint, 0644);
+#else
+MODULE_PARM(yaffs_traceMask, "i");
+MODULE_PARM(yaffs_wr_attempts, "i");
+MODULE_PARM(yaffs_auto_checkpoint, "i");
+#endif
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
+/* use iget and read_inode */
+#define Y_IGET(sb, inum) iget((sb), (inum))
+static void yaffs_read_inode(struct inode *inode);
+
 #else
-MODULE_PARM(yaffs_traceMask,"i");
-MODULE_PARM(yaffs_wr_attempts,"i");
+/* Call local equivalent */
+#define YAFFS_USE_OWN_IGET
+#define Y_IGET(sb, inum) yaffs_iget((sb), (inum))
+
+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
 #endif
 
 /*#define T(x) printk x */
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
-#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
+#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private)
 #else
-#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip
+#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip)
 #endif
 
 #define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr)))
 #define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 #define yaffs_SuperToDevice(sb)	((yaffs_Device *)sb->s_fs_info)
 #else
 #define yaffs_SuperToDevice(sb)	((yaffs_Device *)sb->u.generic_sbp)
@@ -126,47 +166,49 @@ MODULE_PARM(yaffs_wr_attempts,"i");
 static void yaffs_put_super(struct super_block *sb);
 
 static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
-				loff_t * pos);
+				loff_t *pos);
+static ssize_t yaffs_hold_space(struct file *f);
+static void yaffs_release_space(struct file *f);
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_file_flush(struct file *file, fl_owner_t id);
 #else
 static int yaffs_file_flush(struct file *file);
 #endif
 
 static int yaffs_sync_object(struct file *file, struct dentry *dentry,
-			     int datasync);
+				int datasync);
 
 static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
 			struct nameidata *n);
 static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
-				   struct nameidata *n);
+					struct nameidata *n);
 #else
 static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
 static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
 #endif
 static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
-		      struct dentry *dentry);
+			struct dentry *dentry);
 static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
 static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
-			 const char *symname);
+			const char *symname);
 static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
-		       dev_t dev);
+			dev_t dev);
 #else
 static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
-		       int dev);
+			int dev);
 #endif
 static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry);
 static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_sync_fs(struct super_block *sb, int wait);
 static void yaffs_write_super(struct super_block *sb);
 #else
@@ -174,33 +216,47 @@ static int yaffs_sync_fs(struct super_bl
 static int yaffs_write_super(struct super_block *sb);
 #endif
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
 #else
 static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
 #endif
-static void yaffs_read_inode(struct inode *inode);
 
+#ifdef YAFFS_HAS_PUT_INODE
 static void yaffs_put_inode(struct inode *inode);
+#endif
+
 static void yaffs_delete_inode(struct inode *);
 static void yaffs_clear_inode(struct inode *);
 
 static int yaffs_readpage(struct file *file, struct page *page);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
 #else
 static int yaffs_writepage(struct page *page);
 #endif
+
+
+#if (YAFFS_USE_WRITE_BEGIN_END != 0)
+static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+				loff_t pos, unsigned len, unsigned flags,
+				struct page **pagep, void **fsdata);
+static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+				loff_t pos, unsigned len, unsigned copied,
+				struct page *pg, void *fsdadata);
+#else
 static int yaffs_prepare_write(struct file *f, struct page *pg,
-			       unsigned offset, unsigned to);
+				unsigned offset, unsigned to);
 static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
-			      unsigned to);
+				unsigned to);
 
-static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
-			  int buflen);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
+#endif
+
+static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
+				int buflen);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
 static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
 #else
 static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
@@ -209,12 +265,17 @@ static int yaffs_follow_link(struct dent
 static struct address_space_operations yaffs_file_address_operations = {
 	.readpage = yaffs_readpage,
 	.writepage = yaffs_writepage,
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+	.write_begin = yaffs_write_begin,
+	.write_end = yaffs_write_end,
+#else
 	.prepare_write = yaffs_prepare_write,
 	.commit_write = yaffs_commit_write,
+#endif
 };
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
-static struct file_operations yaffs_file_operations = {
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
+static const struct file_operations yaffs_file_operations = {
 	.read = do_sync_read,
 	.write = do_sync_write,
 	.aio_read = generic_file_aio_read,
@@ -224,11 +285,12 @@ static struct file_operations yaffs_file
 	.fsync = yaffs_sync_object,
 	.splice_read = generic_file_splice_read,
 	.splice_write = generic_file_splice_write,
+	.llseek = generic_file_llseek,
 };
 
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
 
-static struct file_operations yaffs_file_operations = {
+static const struct file_operations yaffs_file_operations = {
 	.read = do_sync_read,
 	.write = do_sync_write,
 	.aio_read = generic_file_aio_read,
@@ -241,29 +303,29 @@ static struct file_operations yaffs_file
 
 #else
 
-static struct file_operations yaffs_file_operations = {
+static const struct file_operations yaffs_file_operations = {
 	.read = generic_file_read,
 	.write = generic_file_write,
 	.mmap = generic_file_mmap,
 	.flush = yaffs_file_flush,
 	.fsync = yaffs_sync_object,
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 	.sendfile = generic_file_sendfile,
 #endif
 };
 #endif
 
-static struct inode_operations yaffs_file_inode_operations = {
+static const struct inode_operations yaffs_file_inode_operations = {
 	.setattr = yaffs_setattr,
 };
 
-static struct inode_operations yaffs_symlink_inode_operations = {
+static const struct inode_operations yaffs_symlink_inode_operations = {
 	.readlink = yaffs_readlink,
 	.follow_link = yaffs_follow_link,
 	.setattr = yaffs_setattr,
 };
 
-static struct inode_operations yaffs_dir_inode_operations = {
+static const struct inode_operations yaffs_dir_inode_operations = {
 	.create = yaffs_create,
 	.lookup = yaffs_lookup,
 	.link = yaffs_link,
@@ -276,16 +338,21 @@ static struct inode_operations yaffs_dir
 	.setattr = yaffs_setattr,
 };
 
-static struct file_operations yaffs_dir_operations = {
+static const struct file_operations yaffs_dir_operations = {
 	.read = generic_read_dir,
 	.readdir = yaffs_readdir,
 	.fsync = yaffs_sync_object,
 };
 
-static struct super_operations yaffs_super_ops = {
+static const struct super_operations yaffs_super_ops = {
 	.statfs = yaffs_statfs,
+
+#ifndef YAFFS_USE_OWN_IGET
 	.read_inode = yaffs_read_inode,
+#endif
+#ifdef YAFFS_HAS_PUT_INODE
 	.put_inode = yaffs_put_inode,
+#endif
 	.put_super = yaffs_put_super,
 	.delete_inode = yaffs_delete_inode,
 	.clear_inode = yaffs_clear_inode,
@@ -293,22 +360,21 @@ static struct super_operations yaffs_sup
 	.write_super = yaffs_write_super,
 };
 
-static void yaffs_GrossLock(yaffs_Device * dev)
+static void yaffs_GrossLock(yaffs_Device *dev)
 {
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n"));
-
+	T(YAFFS_TRACE_OS, ("yaffs locking %p\n", current));
 	down(&dev->grossLock);
+	T(YAFFS_TRACE_OS, ("yaffs locked %p\n", current));
 }
 
-static void yaffs_GrossUnlock(yaffs_Device * dev)
+static void yaffs_GrossUnlock(yaffs_Device *dev)
 {
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n"));
+	T(YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current));
 	up(&dev->grossLock);
-
 }
 
-static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
-			  int buflen)
+static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
+			int buflen)
 {
 	unsigned char *alias;
 	int ret;
@@ -329,7 +395,7 @@ static int yaffs_readlink(struct dentry
 	return ret;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
 static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
 #else
 static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
@@ -345,32 +411,31 @@ static int yaffs_follow_link(struct dent
 
 	yaffs_GrossUnlock(dev);
 
-	if (!alias)
-        {
+	if (!alias) {
 		ret = -ENOMEM;
 		goto out;
-        }
+	}
 
 	ret = vfs_follow_link(nd, alias);
 	kfree(alias);
 out:
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
-	return ERR_PTR (ret);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+	return ERR_PTR(ret);
 #else
 	return ret;
 #endif
 }
 
 struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
-			      yaffs_Object * obj);
+				yaffs_Object *obj);
 
 /*
  * Lookup is used to find objects in the fs
  */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 
 static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
-				   struct nameidata *n)
+				struct nameidata *n)
 #else
 static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
 #endif
@@ -383,12 +448,11 @@ static struct dentry *yaffs_lookup(struc
 	yaffs_GrossLock(dev);
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_lookup for %d:%s\n",
-	   yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
+		("yaffs_lookup for %d:%s\n",
+		yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
 
-	obj =
-	    yaffs_FindObjectByName(yaffs_InodeToObject(dir),
-				   dentry->d_name.name);
+	obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir),
+					dentry->d_name.name);
 
 	obj = yaffs_GetEquivalentObject(obj);	/* in case it was a hardlink */
 
@@ -397,13 +461,13 @@ static struct dentry *yaffs_lookup(struc
 
 	if (obj) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId));
+			("yaffs_lookup found %d\n", obj->objectId));
 
 		inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
 
 		if (inode) {
 			T(YAFFS_TRACE_OS,
-			  (KERN_DEBUG "yaffs_loookup dentry \n"));
+				("yaffs_loookup dentry \n"));
 /* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
  * d_add even if NULL inode */
 #if 0
@@ -416,7 +480,7 @@ static struct dentry *yaffs_lookup(struc
 		}
 
 	} else {
-		T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n"));
+		T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n"));
 
 	}
 
@@ -425,20 +489,22 @@ static struct dentry *yaffs_lookup(struc
 	d_add(dentry, inode);
 
 	return NULL;
-	/*      return (ERR_PTR(-EIO)); */
-
 }
 
+
+#ifdef YAFFS_HAS_PUT_INODE
+
 /* For now put inode is just for debugging
  * Put inode is called when the inode **structure** is put.
  */
 static void yaffs_put_inode(struct inode *inode)
 {
 	T(YAFFS_TRACE_OS,
-	  ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
-	   atomic_read(&inode->i_count)));
+		("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
+		atomic_read(&inode->i_count)));
 
 }
+#endif
 
 /* clear is called to tell the fs to release any per-inode data it holds */
 static void yaffs_clear_inode(struct inode *inode)
@@ -449,9 +515,9 @@ static void yaffs_clear_inode(struct ino
 	obj = yaffs_InodeToObject(inode);
 
 	T(YAFFS_TRACE_OS,
-	  ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
-	   atomic_read(&inode->i_count),
-	   obj ? "object exists" : "null object"));
+		("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+		atomic_read(&inode->i_count),
+		obj ? "object exists" : "null object"));
 
 	if (obj) {
 		dev = obj->myDev;
@@ -486,23 +552,23 @@ static void yaffs_delete_inode(struct in
 	yaffs_Device *dev;
 
 	T(YAFFS_TRACE_OS,
-	  ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
-	   atomic_read(&inode->i_count),
-	   obj ? "object exists" : "null object"));
+		("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
+		atomic_read(&inode->i_count),
+		obj ? "object exists" : "null object"));
 
 	if (obj) {
 		dev = obj->myDev;
 		yaffs_GrossLock(dev);
-		yaffs_DeleteFile(obj);
+		yaffs_DeleteObject(obj);
 		yaffs_GrossUnlock(dev);
 	}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
-        truncate_inode_pages (&inode->i_data, 0);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+	truncate_inode_pages(&inode->i_data, 0);
 #endif
 	clear_inode(inode);
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_file_flush(struct file *file, fl_owner_t id)
 #else
 static int yaffs_file_flush(struct file *file)
@@ -513,8 +579,8 @@ static int yaffs_file_flush(struct file
 	yaffs_Device *dev = obj->myDev;
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId,
-	   obj->dirty ? "dirty" : "clean"));
+		("yaffs_file_flush object %d (%s)\n", obj->objectId,
+		obj->dirty ? "dirty" : "clean"));
 
 	yaffs_GrossLock(dev);
 
@@ -535,15 +601,15 @@ static int yaffs_readpage_nolock(struct
 
 	yaffs_Device *dev;
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n",
-			   (unsigned)(pg->index << PAGE_CACHE_SHIFT),
-			   (unsigned)PAGE_CACHE_SIZE));
+	T(YAFFS_TRACE_OS, ("yaffs_readpage at %08x, size %08x\n",
+			(unsigned)(pg->index << PAGE_CACHE_SHIFT),
+			(unsigned)PAGE_CACHE_SIZE));
 
 	obj = yaffs_DentryToObject(f->f_dentry);
 
 	dev = obj->myDev;
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 	BUG_ON(!PageLocked(pg));
 #else
 	if (!PageLocked(pg))
@@ -555,9 +621,9 @@ static int yaffs_readpage_nolock(struct
 
 	yaffs_GrossLock(dev);
 
-	ret =
-	    yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT,
-				   PAGE_CACHE_SIZE);
+	ret = yaffs_ReadDataFromFile(obj, pg_buf,
+				pg->index << PAGE_CACHE_SHIFT,
+				PAGE_CACHE_SIZE);
 
 	yaffs_GrossUnlock(dev);
 
@@ -575,7 +641,7 @@ static int yaffs_readpage_nolock(struct
 	flush_dcache_page(pg);
 	kunmap(pg);
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_readpage done\n"));
 	return ret;
 }
 
@@ -593,7 +659,7 @@ static int yaffs_readpage(struct file *f
 
 /* writepage inspired by/stolen from smbfs */
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
 #else
 static int yaffs_writepage(struct page *page)
@@ -616,12 +682,11 @@ static int yaffs_writepage(struct page *
 
 	if (offset > inode->i_size) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG
-		   "yaffs_writepage at %08x, inode size = %08x!!!\n",
-		   (unsigned)(page->index << PAGE_CACHE_SHIFT),
-		   (unsigned)inode->i_size));
+			("yaffs_writepage at %08x, inode size = %08x!!!\n",
+			(unsigned)(page->index << PAGE_CACHE_SHIFT),
+			(unsigned)inode->i_size));
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "                -> don't care!!\n"));
+			("                -> don't care!!\n"));
 		unlock_page(page);
 		return 0;
 	}
@@ -629,11 +694,10 @@ static int yaffs_writepage(struct page *
 	end_index = inode->i_size >> PAGE_CACHE_SHIFT;
 
 	/* easy case */
-	if (page->index < end_index) {
+	if (page->index < end_index)
 		nBytes = PAGE_CACHE_SIZE;
-	} else {
+	else
 		nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1);
-	}
 
 	get_page(page);
 
@@ -643,19 +707,18 @@ static int yaffs_writepage(struct page *
 	yaffs_GrossLock(obj->myDev);
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n",
-	   (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
+		("yaffs_writepage at %08x, size %08x\n",
+		(unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n",
-	   (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+		("writepag0: obj = %05x, ino = %05x\n",
+		(int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
 
-	nWritten =
-	    yaffs_WriteDataToFile(obj, buffer, page->index << PAGE_CACHE_SHIFT,
-				  nBytes, 0);
+	nWritten = yaffs_WriteDataToFile(obj, buffer,
+			page->index << PAGE_CACHE_SHIFT, nBytes, 0);
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n",
-	   (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
+		("writepag1: obj = %05x, ino = %05x\n",
+		(int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
 
 	yaffs_GrossUnlock(obj->myDev);
 
@@ -667,100 +730,207 @@ static int yaffs_writepage(struct page *
 	return (nWritten == nBytes) ? 0 : -ENOSPC;
 }
 
+
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
+				loff_t pos, unsigned len, unsigned flags,
+				struct page **pagep, void **fsdata)
+{
+	struct page *pg = NULL;
+	pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+	uint32_t offset = pos & (PAGE_CACHE_SIZE - 1);
+	uint32_t to = offset + len;
+
+	int ret = 0;
+	int space_held = 0;
+
+	T(YAFFS_TRACE_OS, ("start yaffs_write_begin\n"));
+	/* Get a page */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)
+	pg = grab_cache_page_write_begin(mapping, index, flags);
+#else
+	pg = __grab_cache_page(mapping, index);
+#endif
+
+	*pagep = pg;
+	if (!pg) {
+		ret =  -ENOMEM;
+		goto out;
+	}
+	/* Get fs space */
+	space_held = yaffs_hold_space(filp);
+
+	if (!space_held) {
+		ret = -ENOSPC;
+		goto out;
+	}
+
+	/* Update page if required */
+
+	if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+		ret = yaffs_readpage_nolock(filp, pg);
+
+	if (ret)
+		goto out;
+
+	/* Happy path return */
+	T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n"));
+
+	return 0;
+
+out:
+	T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret));
+	if (space_held)
+		yaffs_release_space(filp);
+	if (pg) {
+		unlock_page(pg);
+		page_cache_release(pg);
+	}
+	return ret;
+}
+
+#else
+
 static int yaffs_prepare_write(struct file *f, struct page *pg,
-			       unsigned offset, unsigned to)
+				unsigned offset, unsigned to)
 {
+	T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n"));
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n"));
 	if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
 		return yaffs_readpage_nolock(f, pg);
-
 	return 0;
+}
+#endif
+
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+static int yaffs_write_end(struct file *filp, struct address_space *mapping,
+				loff_t pos, unsigned len, unsigned copied,
+				struct page *pg, void *fsdadata)
+{
+	int ret = 0;
+	void *addr, *kva;
+	uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1);
+
+	kva = kmap(pg);
+	addr = kva + offset_into_page;
+
+	T(YAFFS_TRACE_OS,
+		("yaffs_write_end addr %x pos %x nBytes %d\n",
+		(unsigned) addr,
+		(int)pos, copied));
+
+	ret = yaffs_file_write(filp, addr, copied, &pos);
+
+	if (ret != copied) {
+		T(YAFFS_TRACE_OS,
+			("yaffs_write_end not same size ret %d  copied %d\n",
+			ret, copied));
+		SetPageError(pg);
+		ClearPageUptodate(pg);
+	} else {
+		SetPageUptodate(pg);
+	}
+
+	kunmap(pg);
 
+	yaffs_release_space(filp);
+	unlock_page(pg);
+	page_cache_release(pg);
+	return ret;
 }
+#else
 
 static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
-			      unsigned to)
+				unsigned to)
 {
+	void *addr, *kva;
 
-	void *addr = page_address(pg) + offset;
 	loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
 	int nBytes = to - offset;
 	int nWritten;
 
 	unsigned spos = pos;
-	unsigned saddr = (unsigned)addr;
+	unsigned saddr;
+
+	kva = kmap(pg);
+	addr = kva + offset;
+
+	saddr = (unsigned) addr;
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
-	   spos, nBytes));
+		("yaffs_commit_write addr %x pos %x nBytes %d\n",
+		saddr, spos, nBytes));
 
 	nWritten = yaffs_file_write(f, addr, nBytes, &pos);
 
 	if (nWritten != nBytes) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG
-		   "yaffs_commit_write not same size nWritten %d  nBytes %d\n",
-		   nWritten, nBytes));
+			("yaffs_commit_write not same size nWritten %d  nBytes %d\n",
+			nWritten, nBytes));
 		SetPageError(pg);
 		ClearPageUptodate(pg);
 	} else {
 		SetPageUptodate(pg);
 	}
 
+	kunmap(pg);
+
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_commit_write returning %d\n",
-	   nWritten == nBytes ? 0 : nWritten));
+		("yaffs_commit_write returning %d\n",
+		nWritten == nBytes ? 0 : nWritten));
 
 	return nWritten == nBytes ? 0 : nWritten;
-
 }
+#endif
+
 
-static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
+static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj)
 {
 	if (inode && obj) {
 
 
 		/* Check mode against the variant type and attempt to repair if broken. */
- 		__u32 mode = obj->yst_mode;
- 		switch( obj->variantType ){
- 		case YAFFS_OBJECT_TYPE_FILE :
- 		        if( ! S_ISREG(mode) ){
- 			        obj->yst_mode &= ~S_IFMT;
- 			        obj->yst_mode |= S_IFREG;
- 			}
-
- 			break;
- 		case YAFFS_OBJECT_TYPE_SYMLINK :
- 		        if( ! S_ISLNK(mode) ){
- 			        obj->yst_mode &= ~S_IFMT;
- 				obj->yst_mode |= S_IFLNK;
- 			}
-
- 			break;
- 		case YAFFS_OBJECT_TYPE_DIRECTORY :
- 		        if( ! S_ISDIR(mode) ){
- 			        obj->yst_mode &= ~S_IFMT;
- 			        obj->yst_mode |= S_IFDIR;
- 			}
-
- 			break;
- 		case YAFFS_OBJECT_TYPE_UNKNOWN :
- 		case YAFFS_OBJECT_TYPE_HARDLINK :
- 		case YAFFS_OBJECT_TYPE_SPECIAL :
- 		default:
- 		        /* TODO? */
- 		        break;
- 		}
+		__u32 mode = obj->yst_mode;
+		switch (obj->variantType) {
+		case YAFFS_OBJECT_TYPE_FILE:
+			if (!S_ISREG(mode)) {
+				obj->yst_mode &= ~S_IFMT;
+				obj->yst_mode |= S_IFREG;
+			}
+
+			break;
+		case YAFFS_OBJECT_TYPE_SYMLINK:
+			if (!S_ISLNK(mode)) {
+				obj->yst_mode &= ~S_IFMT;
+				obj->yst_mode |= S_IFLNK;
+			}
+
+			break;
+		case YAFFS_OBJECT_TYPE_DIRECTORY:
+			if (!S_ISDIR(mode)) {
+				obj->yst_mode &= ~S_IFMT;
+				obj->yst_mode |= S_IFDIR;
+			}
+
+			break;
+		case YAFFS_OBJECT_TYPE_UNKNOWN:
+		case YAFFS_OBJECT_TYPE_HARDLINK:
+		case YAFFS_OBJECT_TYPE_SPECIAL:
+		default:
+			/* TODO? */
+			break;
+		}
+
+		inode->i_flags |= S_NOATIME;
 
 		inode->i_ino = obj->objectId;
 		inode->i_mode = obj->yst_mode;
 		inode->i_uid = obj->yst_uid;
 		inode->i_gid = obj->yst_gid;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 		inode->i_blksize = inode->i_sb->s_blocksize;
 #endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 
 		inode->i_rdev = old_decode_dev(obj->yst_rdev);
 		inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
@@ -781,26 +951,25 @@ static void yaffs_FillInodeFromObject(st
 		inode->i_nlink = yaffs_GetObjectLinkCount(obj);
 
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG
-		   "yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
-		   inode->i_mode, inode->i_uid, inode->i_gid,
-		   (int)inode->i_size, atomic_read(&inode->i_count)));
+			("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
+			inode->i_mode, inode->i_uid, inode->i_gid,
+			(int)inode->i_size, atomic_read(&inode->i_count)));
 
 		switch (obj->yst_mode & S_IFMT) {
 		default:	/* fifo, device or socket */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 			init_special_inode(inode, obj->yst_mode,
-					   old_decode_dev(obj->yst_rdev));
+					old_decode_dev(obj->yst_rdev));
 #else
 			init_special_inode(inode, obj->yst_mode,
-					   (dev_t) (obj->yst_rdev));
+					(dev_t) (obj->yst_rdev));
 #endif
 			break;
 		case S_IFREG:	/* file */
 			inode->i_op = &yaffs_file_inode_operations;
 			inode->i_fop = &yaffs_file_operations;
 			inode->i_mapping->a_ops =
-			    &yaffs_file_address_operations;
+				&yaffs_file_address_operations;
 			break;
 		case S_IFDIR:	/* directory */
 			inode->i_op = &yaffs_dir_inode_operations;
@@ -817,34 +986,36 @@ static void yaffs_FillInodeFromObject(st
 
 	} else {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_FileInode invalid parameters\n"));
+			("yaffs_FileInode invalid parameters\n"));
 	}
 
 }
 
 struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
-			      yaffs_Object * obj)
+				yaffs_Object *obj)
 {
 	struct inode *inode;
 
 	if (!sb) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n"));
+			("yaffs_get_inode for NULL super_block!!\n"));
 		return NULL;
 
 	}
 
 	if (!obj) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_get_inode for NULL object!!\n"));
+			("yaffs_get_inode for NULL object!!\n"));
 		return NULL;
 
 	}
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
+		("yaffs_get_inode for object %d\n", obj->objectId));
 
-	inode = iget(sb, obj->objectId);
+	inode = Y_IGET(sb, obj->objectId);
+	if (IS_ERR(inode))
+		return NULL;
 
 	/* NB Side effect: iget calls back to yaffs_read_inode(). */
 	/* iget also increments the inode's i_count */
@@ -854,7 +1025,7 @@ struct inode *yaffs_get_inode(struct sup
 }
 
 static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
-				loff_t * pos)
+				loff_t *pos)
 {
 	yaffs_Object *obj;
 	int nWritten, ipos;
@@ -869,28 +1040,26 @@ static ssize_t yaffs_file_write(struct f
 
 	inode = f->f_dentry->d_inode;
 
-	if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) {
+	if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
 		ipos = inode->i_size;
-	} else {
+	else
 		ipos = *pos;
-	}
 
-	if (!obj) {
+	if (!obj)
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_file_write: hey obj is null!\n"));
-	} else {
+			("yaffs_file_write: hey obj is null!\n"));
+	else
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG
-		   "yaffs_file_write about to write writing %d bytes"
-		   "to object %d at %d\n",
-		   n, obj->objectId, ipos));
-	}
+			("yaffs_file_write about to write writing %zu bytes"
+			"to object %d at %d\n",
+			n, obj->objectId, ipos));
 
 	nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0);
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n",
-	   n, nWritten, ipos));
+		("yaffs_file_write writing %zu bytes, %d written at %d\n",
+		n, nWritten, ipos));
+
 	if (nWritten > 0) {
 		ipos += nWritten;
 		*pos = ipos;
@@ -899,10 +1068,9 @@ static ssize_t yaffs_file_write(struct f
 			inode->i_blocks = (ipos + 511) >> 9;
 
 			T(YAFFS_TRACE_OS,
-			  (KERN_DEBUG
-			   "yaffs_file_write size updated to %d bytes, "
-			   "%d blocks\n",
-			   ipos, (int)(inode->i_blocks)));
+				("yaffs_file_write size updated to %d bytes, "
+				"%d blocks\n",
+				ipos, (int)(inode->i_blocks)));
 		}
 
 	}
@@ -910,13 +1078,54 @@ static ssize_t yaffs_file_write(struct f
 	return nWritten == 0 ? -ENOSPC : nWritten;
 }
 
+/* Space holding and freeing is done to ensure we have space available for write_begin/end */
+/* For now we just assume few parallel writes and check against a small number. */
+/* Todo: need to do this with a counter to handle parallel reads better */
+
+static ssize_t yaffs_hold_space(struct file *f)
+{
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+
+	int nFreeChunks;
+
+
+	obj = yaffs_DentryToObject(f->f_dentry);
+
+	dev = obj->myDev;
+
+	yaffs_GrossLock(dev);
+
+	nFreeChunks = yaffs_GetNumberOfFreeChunks(dev);
+
+	yaffs_GrossUnlock(dev);
+
+	return (nFreeChunks > 20) ? 1 : 0;
+}
+
+static void yaffs_release_space(struct file *f)
+{
+	yaffs_Object *obj;
+	yaffs_Device *dev;
+
+
+	obj = yaffs_DentryToObject(f->f_dentry);
+
+	dev = obj->myDev;
+
+	yaffs_GrossLock(dev);
+
+
+	yaffs_GrossUnlock(dev);
+}
+
 static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
 {
 	yaffs_Object *obj;
 	yaffs_Device *dev;
 	struct inode *inode = f->f_dentry->d_inode;
 	unsigned long offset, curoffs;
-	struct list_head *i;
+	struct ylist_head *i;
 	yaffs_Object *l;
 
 	char name[YAFFS_MAX_NAME_LENGTH + 1];
@@ -932,24 +1141,20 @@ static int yaffs_readdir(struct file *f,
 
 	if (offset == 0) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_readdir: entry . ino %d \n",
-		   (int)inode->i_ino));
-		if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR)
-		    < 0) {
+			("yaffs_readdir: entry . ino %d \n",
+			(int)inode->i_ino));
+		if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0)
 			goto out;
-		}
 		offset++;
 		f->f_pos++;
 	}
 	if (offset == 1) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n",
-		   (int)f->f_dentry->d_parent->d_inode->i_ino));
-		if (filldir
-		    (dirent, "..", 2, offset,
-		     f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
+			("yaffs_readdir: entry .. ino %d \n",
+			(int)f->f_dentry->d_parent->d_inode->i_ino));
+		if (filldir(dirent, "..", 2, offset,
+			f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0)
 			goto out;
-		}
 		offset++;
 		f->f_pos++;
 	}
@@ -965,35 +1170,32 @@ static int yaffs_readdir(struct file *f,
 		f->f_version = inode->i_version;
 	}
 
-	list_for_each(i, &obj->variant.directoryVariant.children) {
+	ylist_for_each(i, &obj->variant.directoryVariant.children) {
 		curoffs++;
 		if (curoffs >= offset) {
-			l = list_entry(i, yaffs_Object, siblings);
+			l = ylist_entry(i, yaffs_Object, siblings);
 
 			yaffs_GetObjectName(l, name,
 					    YAFFS_MAX_NAME_LENGTH + 1);
 			T(YAFFS_TRACE_OS,
-			  (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name,
+			  ("yaffs_readdir: %s inode %d\n", name,
 			   yaffs_GetObjectInode(l)));
 
 			if (filldir(dirent,
-				    name,
-				    strlen(name),
-				    offset,
-				    yaffs_GetObjectInode(l),
-				    yaffs_GetObjectType(l))
-			    < 0) {
+					name,
+					strlen(name),
+					offset,
+					yaffs_GetObjectInode(l),
+					yaffs_GetObjectType(l)) < 0)
 				goto up_and_out;
-			}
 
 			offset++;
 			f->f_pos++;
 		}
 	}
 
-      up_and_out:
-      out:
-
+up_and_out:
+out:
 	yaffs_GrossUnlock(dev);
 
 	return 0;
@@ -1002,12 +1204,19 @@ static int yaffs_readdir(struct file *f,
 /*
  * File creation. Allocate an inode, and we're done..
  */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+#define YCRED(x) x
+#else
+#define YCRED(x) (x->cred)
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
-		       dev_t rdev)
+			dev_t rdev)
 #else
 static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
-		       int rdev)
+			int rdev)
 #endif
 {
 	struct inode *inode;
@@ -1018,25 +1227,25 @@ static int yaffs_mknod(struct inode *dir
 	yaffs_Object *parent = yaffs_InodeToObject(dir);
 
 	int error = -ENOSPC;
-	uid_t uid = current->fsuid;
-	gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	uid_t uid = YCRED(current)->fsuid;
+	gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
 
-	if((dir->i_mode & S_ISGID) && S_ISDIR(mode))
+	if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
 		mode |= S_ISGID;
 
 	if (parent) {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n",
-		   parent->objectId, parent->variantType));
+			("yaffs_mknod: parent object %d type %d\n",
+			parent->objectId, parent->variantType));
 	} else {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_mknod: could not get parent object\n"));
+			("yaffs_mknod: could not get parent object\n"));
 		return -EPERM;
 	}
 
 	T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, "
-			   "mode %x dev %x\n",
-			   dentry->d_name.name, mode, rdev));
+			"mode %x dev %x\n",
+			dentry->d_name.name, mode, rdev));
 
 	dev = parent->myDev;
 
@@ -1045,33 +1254,28 @@ static int yaffs_mknod(struct inode *dir
 	switch (mode & S_IFMT) {
 	default:
 		/* Special (socket, fifo, device...) */
-		T(YAFFS_TRACE_OS, (KERN_DEBUG
-				   "yaffs_mknod: making special\n"));
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-		obj =
-		    yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
-				       gid, old_encode_dev(rdev));
-#else
-		obj =
-		    yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
-				       gid, rdev);
+		T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n"));
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+		obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+				gid, old_encode_dev(rdev));
+#else
+		obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
+				gid, rdev);
 #endif
 		break;
 	case S_IFREG:		/* file          */
-		T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
-		obj =
-		    yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
-				    gid);
+		T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n"));
+		obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
+				gid);
 		break;
 	case S_IFDIR:		/* directory */
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_mknod: making directory\n"));
-		obj =
-		    yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
-					 uid, gid);
+			("yaffs_mknod: making directory\n"));
+		obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
+					uid, gid);
 		break;
 	case S_IFLNK:		/* symlink */
-		T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
+		T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n"));
 		obj = NULL;	/* Do we ever get here? */
 		break;
 	}
@@ -1083,12 +1287,12 @@ static int yaffs_mknod(struct inode *dir
 		inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
 		d_instantiate(dentry, inode);
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_mknod created object %d count = %d\n",
-		   obj->objectId, atomic_read(&inode->i_count)));
+			("yaffs_mknod created object %d count = %d\n",
+			obj->objectId, atomic_read(&inode->i_count)));
 		error = 0;
 	} else {
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_mknod failed making object\n"));
+			("yaffs_mknod failed making object\n"));
 		error = -ENOMEM;
 	}
 
@@ -1098,25 +1302,19 @@ static int yaffs_mknod(struct inode *dir
 static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 {
 	int retVal;
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_mkdir\n"));
 	retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
-#if 0
-	/* attempt to fix dir bug - didn't work */
-	if (!retVal) {
-		dget(dentry);
-	}
-#endif
 	return retVal;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
 			struct nameidata *n)
 #else
 static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
 #endif
 {
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_create\n"));
 	return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
 }
 
@@ -1127,8 +1325,8 @@ static int yaffs_unlink(struct inode *di
 	yaffs_Device *dev;
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino),
-	   dentry->d_name.name));
+		("yaffs_unlink %d:%s\n", (int)(dir->i_ino),
+		dentry->d_name.name));
 
 	dev = yaffs_InodeToObject(dir)->myDev;
 
@@ -1151,82 +1349,74 @@ static int yaffs_unlink(struct inode *di
  * Create a link...
  */
 static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
-		      struct dentry *dentry)
+			struct dentry *dentry)
 {
 	struct inode *inode = old_dentry->d_inode;
 	yaffs_Object *obj = NULL;
 	yaffs_Object *link = NULL;
 	yaffs_Device *dev;
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_link\n"));
 
 	obj = yaffs_InodeToObject(inode);
 	dev = obj->myDev;
 
 	yaffs_GrossLock(dev);
 
-	if (!S_ISDIR(inode->i_mode))	/* Don't link directories */
-	{
-		link =
-		    yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
-			       obj);
-	}
+	if (!S_ISDIR(inode->i_mode))		/* Don't link directories */
+		link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
+			obj);
 
 	if (link) {
 		old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj);
 		d_instantiate(dentry, old_dentry->d_inode);
 		atomic_inc(&old_dentry->d_inode->i_count);
 		T(YAFFS_TRACE_OS,
-		  (KERN_DEBUG "yaffs_link link count %d i_count %d\n",
-		   old_dentry->d_inode->i_nlink,
-		   atomic_read(&old_dentry->d_inode->i_count)));
-
+			("yaffs_link link count %d i_count %d\n",
+			old_dentry->d_inode->i_nlink,
+			atomic_read(&old_dentry->d_inode->i_count)));
 	}
 
 	yaffs_GrossUnlock(dev);
 
-	if (link) {
-
+	if (link)
 		return 0;
-	}
 
 	return -EPERM;
 }
 
 static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
-			 const char *symname)
+				const char *symname)
 {
 	yaffs_Object *obj;
 	yaffs_Device *dev;
-	uid_t uid = current->fsuid;
-	gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	uid_t uid = YCRED(current)->fsuid;
+	gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_symlink\n"));
 
 	dev = yaffs_InodeToObject(dir)->myDev;
 	yaffs_GrossLock(dev);
 	obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name,
-				 S_IFLNK | S_IRWXUGO, uid, gid, symname);
+				S_IFLNK | S_IRWXUGO, uid, gid, symname);
 	yaffs_GrossUnlock(dev);
 
 	if (obj) {
-
 		struct inode *inode;
 
 		inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
 		d_instantiate(dentry, inode);
-		T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n"));
+		T(YAFFS_TRACE_OS, ("symlink created OK\n"));
 		return 0;
 	} else {
-		T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n"));
-
+		T(YAFFS_TRACE_OS, ("symlink not created\n"));
 	}
 
 	return -ENOMEM;
 }
 
 static int yaffs_sync_object(struct file *file, struct dentry *dentry,
-			     int datasync)
+				int datasync)
 {
 
 	yaffs_Object *obj;
@@ -1236,7 +1426,7 @@ static int yaffs_sync_object(struct file
 
 	dev = obj->myDev;
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_sync_object\n"));
 	yaffs_GrossLock(dev);
 	yaffs_FlushFile(obj, 1);
 	yaffs_GrossUnlock(dev);
@@ -1255,41 +1445,36 @@ static int yaffs_rename(struct inode *ol
 	int retVal = YAFFS_FAIL;
 	yaffs_Object *target;
 
-        T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_rename\n"));
 	dev = yaffs_InodeToObject(old_dir)->myDev;
 
 	yaffs_GrossLock(dev);
 
 	/* Check if the target is an existing directory that is not empty. */
-	target =
-	    yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
-				   new_dentry->d_name.name);
+	target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
+				new_dentry->d_name.name);
 
 
 
-	if (target &&
-	    target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
-	    !list_empty(&target->variant.directoryVariant.children)) {
+	if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+		!ylist_empty(&target->variant.directoryVariant.children)) {
 
-	        T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n"));
+		T(YAFFS_TRACE_OS, ("target is non-empty dir\n"));
 
 		retVal = YAFFS_FAIL;
 	} else {
-
 		/* Now does unlinking internally using shadowing mechanism */
-	        T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n"));
-
-		retVal =
-		    yaffs_RenameObject(yaffs_InodeToObject(old_dir),
-				       old_dentry->d_name.name,
-				       yaffs_InodeToObject(new_dir),
-				       new_dentry->d_name.name);
+		T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n"));
 
+		retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir),
+				old_dentry->d_name.name,
+				yaffs_InodeToObject(new_dir),
+				new_dentry->d_name.name);
 	}
 	yaffs_GrossUnlock(dev);
 
 	if (retVal == YAFFS_OK) {
-		if(target) {
+		if (target) {
 			new_dentry->d_inode->i_nlink--;
 			mark_inode_dirty(new_dentry->d_inode);
 		}
@@ -1298,7 +1483,6 @@ static int yaffs_rename(struct inode *ol
 	} else {
 		return -ENOTEMPTY;
 	}
-
 }
 
 static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
@@ -1308,15 +1492,15 @@ static int yaffs_setattr(struct dentry *
 	yaffs_Device *dev;
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_setattr of object %d\n",
-	   yaffs_InodeToObject(inode)->objectId));
-
-	if ((error = inode_change_ok(inode, attr)) == 0) {
+		("yaffs_setattr of object %d\n",
+		yaffs_InodeToObject(inode)->objectId));
 
+	error = inode_change_ok(inode, attr);
+	if (error == 0) {
 		dev = yaffs_InodeToObject(inode)->myDev;
 		yaffs_GrossLock(dev);
 		if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) ==
-		    YAFFS_OK) {
+				YAFFS_OK) {
 			error = 0;
 		} else {
 			error = -EPERM;
@@ -1328,12 +1512,12 @@ static int yaffs_setattr(struct dentry *
 	return error;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
 	yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
 	struct super_block *sb = dentry->d_sb;
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
 {
 	yaffs_Device *dev = yaffs_SuperToDevice(sb);
@@ -1343,32 +1527,53 @@ static int yaffs_statfs(struct super_blo
 	yaffs_Device *dev = yaffs_SuperToDevice(sb);
 #endif
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_statfs\n"));
 
 	yaffs_GrossLock(dev);
 
 	buf->f_type = YAFFS_MAGIC;
 	buf->f_bsize = sb->s_blocksize;
 	buf->f_namelen = 255;
-	if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+
+	if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) {
+		/* Do this if chunk size is not a power of 2 */
+
+		uint64_t bytesInDev;
+		uint64_t bytesFree;
+
+		bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock + 1))) *
+			((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
+
+		do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */
+		buf->f_blocks = bytesInDev;
+
+		bytesFree  = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
+			((uint64_t)(dev->nDataBytesPerChunk));
+
+		do_div(bytesFree, sb->s_blocksize);
+
+		buf->f_bfree = bytesFree;
+
+	} else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
 
 		buf->f_blocks =
-		    (dev->endBlock - dev->startBlock +
-		     1) * dev->nChunksPerBlock / (sb->s_blocksize /
-						  dev->nDataBytesPerChunk);
+			(dev->endBlock - dev->startBlock + 1) *
+			dev->nChunksPerBlock /
+			(sb->s_blocksize / dev->nDataBytesPerChunk);
 		buf->f_bfree =
-		    yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
-							dev->nDataBytesPerChunk);
+			yaffs_GetNumberOfFreeChunks(dev) /
+			(sb->s_blocksize / dev->nDataBytesPerChunk);
 	} else {
-
 		buf->f_blocks =
-		    (dev->endBlock - dev->startBlock +
-		     1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
-						  sb->s_blocksize);
+			(dev->endBlock - dev->startBlock + 1) *
+			dev->nChunksPerBlock *
+			(dev->nDataBytesPerChunk / sb->s_blocksize);
+
 		buf->f_bfree =
-		    yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
-							sb->s_blocksize);
+			yaffs_GetNumberOfFreeChunks(dev) *
+			(dev->nDataBytesPerChunk / sb->s_blocksize);
 	}
+
 	buf->f_files = 0;
 	buf->f_ffree = 0;
 	buf->f_bavail = buf->f_bfree;
@@ -1378,18 +1583,19 @@ static int yaffs_statfs(struct super_blo
 }
 
 
-/**
 static int yaffs_do_sync_fs(struct super_block *sb)
 {
 
 	yaffs_Device *dev = yaffs_SuperToDevice(sb);
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_do_sync_fs\n"));
 
-	if(sb->s_dirt) {
+	if (sb->s_dirt) {
 		yaffs_GrossLock(dev);
 
-		if(dev)
+		if (dev) {
+			yaffs_FlushEntireDeviceCache(dev);
 			yaffs_CheckpointSave(dev);
+		}
 
 		yaffs_GrossUnlock(dev);
 
@@ -1397,35 +1603,73 @@ static int yaffs_do_sync_fs(struct super
 	}
 	return 0;
 }
-**/
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static void yaffs_write_super(struct super_block *sb)
 #else
 static int yaffs_write_super(struct super_block *sb)
 #endif
 {
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
-	return 0; /* yaffs_do_sync_fs(sb);*/
+	T(YAFFS_TRACE_OS, ("yaffs_write_super\n"));
+	if (yaffs_auto_checkpoint >= 2)
+		yaffs_do_sync_fs(sb);
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
+	return 0;
 #endif
 }
 
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_sync_fs(struct super_block *sb, int wait)
 #else
 static int yaffs_sync_fs(struct super_block *sb)
 #endif
 {
+	T(YAFFS_TRACE_OS, ("yaffs_sync_fs\n"));
+
+	if (yaffs_auto_checkpoint >= 1)
+		yaffs_do_sync_fs(sb);
+
+	return 0;
+}
+
+#ifdef YAFFS_USE_OWN_IGET
+
+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
+{
+	struct inode *inode;
+	yaffs_Object *obj;
+	yaffs_Device *dev = yaffs_SuperToDevice(sb);
+
+	T(YAFFS_TRACE_OS,
+		("yaffs_iget for %lu\n", ino));
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
+	inode = iget_locked(sb, ino);
+	if (!inode)
+		return ERR_PTR(-ENOMEM);
+	if (!(inode->i_state & I_NEW))
+		return inode;
+
+	/* NB This is called as a side effect of other functions, but
+	 * we had to release the lock to prevent deadlocks, so
+	 * need to lock again.
+	 */
 
-	return 0; /* yaffs_do_sync_fs(sb);*/
+	yaffs_GrossLock(dev);
 
+	obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
+
+	yaffs_FillInodeFromObject(inode, obj);
+
+	yaffs_GrossUnlock(dev);
+
+	unlock_new_inode(inode);
+	return inode;
 }
 
+#else
 
 static void yaffs_read_inode(struct inode *inode)
 {
@@ -1438,7 +1682,7 @@ static void yaffs_read_inode(struct inod
 	yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
 
 	T(YAFFS_TRACE_OS,
-	  (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino));
+		("yaffs_read_inode for %d\n", (int)inode->i_ino));
 
 	yaffs_GrossLock(dev);
 
@@ -1449,18 +1693,20 @@ static void yaffs_read_inode(struct inod
 	yaffs_GrossUnlock(dev);
 }
 
-static LIST_HEAD(yaffs_dev_list);
+#endif
+
+static YLIST_HEAD(yaffs_dev_list);
 
-#if 0 // not used
+#if 0 /* not used */
 static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
 {
 	yaffs_Device    *dev = yaffs_SuperToDevice(sb);
 
-	if( *flags & MS_RDONLY ) {
+	if (*flags & MS_RDONLY) {
 		struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
 
 		T(YAFFS_TRACE_OS,
-			(KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name ));
+			("yaffs_remount_fs: %s: RO\n", dev->name));
 
 		yaffs_GrossLock(dev);
 
@@ -1472,10 +1718,9 @@ static int yaffs_remount_fs(struct super
 			mtd->sync(mtd);
 
 		yaffs_GrossUnlock(dev);
-	}
-	else {
+	} else {
 		T(YAFFS_TRACE_OS,
-			(KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name ));
+			("yaffs_remount_fs: %s: RW\n", dev->name));
 	}
 
 	return 0;
@@ -1486,7 +1731,7 @@ static void yaffs_put_super(struct super
 {
 	yaffs_Device *dev = yaffs_SuperToDevice(sb);
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
+	T(YAFFS_TRACE_OS, ("yaffs_put_super\n"));
 
 	yaffs_GrossLock(dev);
 
@@ -1494,18 +1739,17 @@ static void yaffs_put_super(struct super
 
 	yaffs_CheckpointSave(dev);
 
-	if (dev->putSuperFunc) {
+	if (dev->putSuperFunc)
 		dev->putSuperFunc(sb);
-	}
 
 	yaffs_Deinitialise(dev);
 
 	yaffs_GrossUnlock(dev);
 
 	/* we assume this is protected by lock_kernel() in mount/umount */
-	list_del(&dev->devList);
+	ylist_del(&dev->devList);
 
-	if(dev->spareBuffer){
+	if (dev->spareBuffer) {
 		YFREE(dev->spareBuffer);
 		dev->spareBuffer = NULL;
 	}
@@ -1516,12 +1760,10 @@ static void yaffs_put_super(struct super
 
 static void yaffs_MTDPutSuper(struct super_block *sb)
 {
-
 	struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
 
-	if (mtd->sync) {
+	if (mtd->sync)
 		mtd->sync(mtd);
-	}
 
 	put_mtd_device(mtd);
 }
@@ -1531,9 +1773,9 @@ static void yaffs_MarkSuperBlockDirty(vo
 {
 	struct super_block *sb = (struct super_block *)vsb;
 
-	T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
-//	if(sb)
-//		sb->s_dirt = 1;
+	T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb));
+	if (sb)
+		sb->s_dirt = 1;
 }
 
 typedef struct {
@@ -1546,48 +1788,48 @@ typedef struct {
 #define MAX_OPT_LEN 20
 static int yaffs_parse_options(yaffs_options *options, const char *options_str)
 {
-	char cur_opt[MAX_OPT_LEN+1];
+	char cur_opt[MAX_OPT_LEN + 1];
 	int p;
 	int error = 0;
 
 	/* Parse through the options which is a comma seperated list */
 
-	while(options_str && *options_str && !error){
-		memset(cur_opt,0,MAX_OPT_LEN+1);
+	while (options_str && *options_str && !error) {
+		memset(cur_opt, 0, MAX_OPT_LEN + 1);
 		p = 0;
 
-		while(*options_str && *options_str != ','){
-			if(p < MAX_OPT_LEN){
+		while (*options_str && *options_str != ',') {
+			if (p < MAX_OPT_LEN) {
 				cur_opt[p] = *options_str;
 				p++;
 			}
 			options_str++;
 		}
 
-		if(!strcmp(cur_opt,"inband-tags"))
+		if (!strcmp(cur_opt, "inband-tags"))
 			options->inband_tags = 1;
-		else if(!strcmp(cur_opt,"no-cache"))
+		else if (!strcmp(cur_opt, "no-cache"))
 			options->no_cache = 1;
-		else if(!strcmp(cur_opt,"no-checkpoint-read"))
+		else if (!strcmp(cur_opt, "no-checkpoint-read"))
 			options->skip_checkpoint_read = 1;
-		else if(!strcmp(cur_opt,"no-checkpoint-write"))
+		else if (!strcmp(cur_opt, "no-checkpoint-write"))
 			options->skip_checkpoint_write = 1;
-		else if(!strcmp(cur_opt,"no-checkpoint")){
+		else if (!strcmp(cur_opt, "no-checkpoint")) {
 			options->skip_checkpoint_read = 1;
 			options->skip_checkpoint_write = 1;
 		} else {
-			printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
+			printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",
+					cur_opt);
 			error = 1;
 		}
-
 	}
 
 	return error;
 }
 
 static struct super_block *yaffs_internal_read_super(int yaffsVersion,
-						     struct super_block *sb,
-						     void *data, int silent)
+						struct super_block *sb,
+						void *data, int silent)
 {
 	int nBlocks;
 	struct inode *inode = NULL;
@@ -1602,6 +1844,7 @@ static struct super_block *yaffs_interna
 
 	sb->s_magic = YAFFS_MAGIC;
 	sb->s_op = &yaffs_super_ops;
+	sb->s_flags |= MS_NOATIME;
 
 	if (!sb)
 		printk(KERN_INFO "yaffs: sb is NULL\n");
@@ -1614,14 +1857,14 @@ static struct super_block *yaffs_interna
 		       sb->s_dev,
 		       yaffs_devname(sb, devname_buf));
 
-	if(!data_str)
+	if (!data_str)
 		data_str = "";
 
-	printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str);
+	printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str);
 
-	memset(&options,0,sizeof(options));
+	memset(&options, 0, sizeof(options));
 
-	if(yaffs_parse_options(&options,data_str)){
+	if (yaffs_parse_options(&options, data_str)) {
 		/* Option parsing failed */
 		return NULL;
 	}
@@ -1645,9 +1888,9 @@ static struct super_block *yaffs_interna
 			       yaffs_devname(sb, devname_buf)));
 
 	/* Check it's an mtd device..... */
-	if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) {
+	if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
 		return NULL;	/* This isn't an mtd device */
-	}
+
 	/* Get the device */
 	mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
 	if (!mtd) {
@@ -1673,29 +1916,23 @@ static struct super_block *yaffs_interna
 	T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
 	T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
 	T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
-	T(YAFFS_TRACE_OS, (" size %d\n", mtd->size));
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+	T(YAFFS_TRACE_OS, (" size %u\n", mtd->size));
+#else
+	T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size));
+#endif
 
 #ifdef CONFIG_YAFFS_AUTO_YAFFS2
 
-	if (yaffsVersion == 1 &&
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-	    mtd->writesize >= 2048) {
-#else
-	    mtd->oobblock >= 2048) {
-#endif
-	    T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
-	    yaffsVersion = 2;
+	if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) {
+		T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n"));
+		yaffsVersion = 2;
 	}
 
 	/* Added NCB 26/5/2006 for completeness */
-	if (yaffsVersion == 2 &&
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-	    mtd->writesize == 512) {
-#else
-	    mtd->oobblock == 512) {
-#endif
-	    T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
-	    yaffsVersion = 1;
+	if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) {
+		T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n"));
+		yaffsVersion = 1;
 	}
 
 #endif
@@ -1707,7 +1944,7 @@ static struct super_block *yaffs_interna
 		    !mtd->block_markbad ||
 		    !mtd->read ||
 		    !mtd->write ||
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 		    !mtd->read_oob || !mtd->write_oob) {
 #else
 		    !mtd->write_ecc ||
@@ -1719,12 +1956,9 @@ static struct super_block *yaffs_interna
 			return NULL;
 		}
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-		if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
-#else
-		if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
-#endif
-		    mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
+		if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+		    mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
+		    !options.inband_tags) {
 			T(YAFFS_TRACE_ALWAYS,
 			  ("yaffs: MTD device does not have the "
 			   "right page sizes\n"));
@@ -1735,7 +1969,7 @@ static struct super_block *yaffs_interna
 		if (!mtd->erase ||
 		    !mtd->read ||
 		    !mtd->write ||
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 		    !mtd->read_oob || !mtd->write_oob) {
 #else
 		    !mtd->write_ecc ||
@@ -1761,7 +1995,7 @@ static struct super_block *yaffs_interna
 	 * Set the yaffs_Device up for mtd
 	 */
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 	sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
 #else
 	sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
@@ -1780,13 +2014,15 @@ static struct super_block *yaffs_interna
 
 	/* Set up the memory size parameters.... */
 
-	nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+	nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
+
 	dev->startBlock = 0;
 	dev->endBlock = nBlocks - 1;
 	dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
-	dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+	dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
 	dev->nReservedBlocks = 5;
 	dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+	dev->inbandTags = options.inband_tags;
 
 	/* ... and the functions. */
 	if (yaffsVersion == 2) {
@@ -1798,20 +2034,19 @@ static struct super_block *yaffs_interna
 		dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
 		dev->spareBuffer = YMALLOC(mtd->oobsize);
 		dev->isYaffs2 = 1;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-		dev->nDataBytesPerChunk = mtd->writesize;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+		dev->totalBytesPerChunk = mtd->writesize;
 		dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
 #else
-		dev->nDataBytesPerChunk = mtd->oobblock;
+		dev->totalBytesPerChunk = mtd->oobblock;
 		dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
 #endif
-		nBlocks = mtd->size / mtd->erasesize;
+		nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
 
-		dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
 		dev->startBlock = 0;
 		dev->endBlock = nBlocks - 1;
 	} else {
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 		/* use the MTD interface in yaffs_mtdif1.c */
 		dev->writeChunkWithTagsToNAND =
 			nandmtd1_WriteChunkWithTagsToNAND;
@@ -1847,7 +2082,7 @@ static struct super_block *yaffs_interna
 	dev->skipCheckpointWrite = options.skip_checkpoint_write;
 
 	/* we assume this is protected by lock_kernel() in mount/umount */
-	list_add_tail(&dev->devList, &yaffs_dev_list);
+	ylist_add_tail(&dev->devList, &yaffs_dev_list);
 
 	init_MUTEX(&dev->grossLock);
 
@@ -1884,20 +2119,23 @@ static struct super_block *yaffs_interna
 		return NULL;
 	}
 	sb->s_root = root;
+	sb->s_dirt = !dev->isCheckpointed;
+	T(YAFFS_TRACE_ALWAYS,
+	  ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed));
 
 	T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
 	return sb;
 }
 
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
 					 int silent)
 {
 	return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_read_super(struct file_system_type *fs,
 			    int flags, const char *dev_name,
 			    void *data, struct vfsmount *mnt)
@@ -1938,14 +2176,14 @@ static DECLARE_FSTYPE(yaffs_fs_type, "ya
 
 #ifdef CONFIG_YAFFS_YAFFS2
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
 					  int silent)
 {
 	return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs2_read_super(struct file_system_type *fs,
 			int flags, const char *dev_name, void *data,
 			struct vfsmount *mnt)
@@ -1990,12 +2228,12 @@ static char *yaffs_dump_dev(char *buf, y
 {
 	buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
 	buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
+	buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
 	buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
 	buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
 	buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
 	buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
 	buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
-	buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks);
 	buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
 	buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
 	buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
@@ -2006,10 +2244,8 @@ static char *yaffs_dump_dev(char *buf, y
 	buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
 	buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
 	buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
-	buf +=
-	    sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
-	buf +=
-	    sprintf(buf, "passiveGCs......... %d\n",
+	buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+	buf += sprintf(buf, "passiveGCs......... %d\n",
 		    dev->passiveGarbageCollections);
 	buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
 	buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
@@ -2025,6 +2261,7 @@ static char *yaffs_dump_dev(char *buf, y
 	    sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
 	buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
 	buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
+	buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
 
 	return buf;
 }
@@ -2033,7 +2270,7 @@ static int yaffs_proc_read(char *page,
 			   char **start,
 			   off_t offset, int count, int *eof, void *data)
 {
-	struct list_head *item;
+	struct ylist_head *item;
 	char *buf = page;
 	int step = offset;
 	int n = 0;
@@ -2057,8 +2294,8 @@ static int yaffs_proc_read(char *page,
 	lock_kernel();
 
 	/* Locate and print the Nth entry.  Order N-squared but N is small. */
-	list_for_each(item, &yaffs_dev_list) {
-		yaffs_Device *dev = list_entry(item, yaffs_Device, devList);
+	ylist_for_each(item, &yaffs_dev_list) {
+		yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList);
 		if (n < step) {
 			n++;
 			continue;
@@ -2119,7 +2356,7 @@ static int yaffs_proc_write(struct file
 	char *end;
 	char *mask_name;
 	const char *x;
-	char substring[MAX_MASK_NAME_LENGTH+1];
+	char substring[MAX_MASK_NAME_LENGTH + 1];
 	int i;
 	int done = 0;
 	int add, len = 0;
@@ -2129,9 +2366,8 @@ static int yaffs_proc_write(struct file
 
 	while (!done && (pos < count)) {
 		done = 1;
-		while ((pos < count) && isspace(buf[pos])) {
+		while ((pos < count) && isspace(buf[pos]))
 			pos++;
-		}
 
 		switch (buf[pos]) {
 		case '+':
@@ -2148,20 +2384,21 @@ static int yaffs_proc_write(struct file
 		mask_name = NULL;
 
 		mask_bitfield = simple_strtoul(buf + pos, &end, 0);
+
 		if (end > buf + pos) {
 			mask_name = "numeral";
 			len = end - (buf + pos);
 			pos += len;
 			done = 0;
 		} else {
-			for(x = buf + pos, i = 0;
-			    (*x == '_' || (*x >='a' && *x <= 'z')) &&
-			    i <MAX_MASK_NAME_LENGTH; x++, i++, pos++)
-			    substring[i] = *x;
+			for (x = buf + pos, i = 0;
+			    (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
+			    i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+				substring[i] = *x;
 			substring[i] = '\0';
 
 			for (i = 0; mask_flags[i].mask_name != NULL; i++) {
-				if(strcmp(substring,mask_flags[i].mask_name) == 0){
+				if (strcmp(substring, mask_flags[i].mask_name) == 0) {
 					mask_name = mask_flags[i].mask_name;
 					mask_bitfield = mask_flags[i].mask_bitfield;
 					done = 0;
@@ -2172,7 +2409,7 @@ static int yaffs_proc_write(struct file
 
 		if (mask_name != NULL) {
 			done = 0;
-			switch(add) {
+			switch (add) {
 			case '-':
 				rg &= ~mask_bitfield;
 				break;
@@ -2191,13 +2428,13 @@ static int yaffs_proc_write(struct file
 
 	yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
 
-	printk("new trace = 0x%08X\n",yaffs_traceMask);
+	printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask);
 
 	if (rg & YAFFS_TRACE_ALWAYS) {
 		for (i = 0; mask_flags[i].mask_name != NULL; i++) {
 			char flag;
 			flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-';
-			printk("%c%s\n", flag, mask_flags[i].mask_name);
+			printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name);
 		}
 	}
 
@@ -2211,12 +2448,8 @@ struct file_system_to_install {
 };
 
 static struct file_system_to_install fs_to_install[] = {
-//#ifdef CONFIG_YAFFS_YAFFS1
 	{&yaffs_fs_type, 0},
-//#endif
-//#ifdef CONFIG_YAFFS_YAFFS2
 	{&yaffs2_fs_type, 0},
-//#endif
 	{NULL, 0}
 };
 
@@ -2231,15 +2464,14 @@ static int __init init_yaffs_fs(void)
 	/* Install the proc_fs entry */
 	my_proc_entry = create_proc_entry("yaffs",
 					       S_IRUGO | S_IFREG,
-					       &proc_root);
+					       YPROC_ROOT);
 
 	if (my_proc_entry) {
 		my_proc_entry->write_proc = yaffs_proc_write;
 		my_proc_entry->read_proc = yaffs_proc_read;
 		my_proc_entry->data = NULL;
-	} else {
+	} else
 		return -ENOMEM;
-	}
 
 	/* Now add the file system entries */
 
@@ -2247,9 +2479,8 @@ static int __init init_yaffs_fs(void)
 
 	while (fsinst->fst && !error) {
 		error = register_filesystem(fsinst->fst);
-		if (!error) {
+		if (!error)
 			fsinst->installed = 1;
-		}
 		fsinst++;
 	}
 
@@ -2277,7 +2508,7 @@ static void __exit exit_yaffs_fs(void)
 	T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
 			       " removing. \n"));
 
-	remove_proc_entry("yaffs", &proc_root);
+	remove_proc_entry("yaffs", YPROC_ROOT);
 
 	fsinst = fs_to_install;
 
@@ -2288,7 +2519,6 @@ static void __exit exit_yaffs_fs(void)
 		}
 		fsinst++;
 	}
-
 }
 
 module_init(init_yaffs_fs)
--- /dev/null
+++ b/fs/yaffs2/yaffs_getblockinfo.h
@@ -0,0 +1,34 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_GETBLOCKINFO_H__
+#define __YAFFS_GETBLOCKINFO_H__
+
+#include "yaffs_guts.h"
+
+/* Function to manipulate block info */
+static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
+{
+	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+		T(YAFFS_TRACE_ERROR,
+		  (TSTR
+		   ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
+		   blk));
+		YBUG();
+	}
+	return &dev->blockInfo[blk - dev->internalStartBlock];
+}
+
+#endif
--- a/fs/yaffs2/yaffs_guts.c
+++ b/fs/yaffs2/yaffs_guts.c
@@ -12,16 +12,17 @@
  */
 
 const char *yaffs_guts_c_version =
-    "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $";
+    "$Id: yaffs_guts.c,v 1.82 2009-03-09 04:24:17 charles Exp $";
 
 #include "yportenv.h"
 
 #include "yaffsinterface.h"
 #include "yaffs_guts.h"
 #include "yaffs_tagsvalidity.h"
+#include "yaffs_getblockinfo.h"
 
 #include "yaffs_tagscompat.h"
-#ifndef  CONFIG_YAFFS_USE_OWN_SORT
+#ifndef CONFIG_YAFFS_USE_OWN_SORT
 #include "yaffs_qsort.h"
 #endif
 #include "yaffs_nand.h"
@@ -32,116 +33,116 @@ const char *yaffs_guts_c_version =
 #include "yaffs_packedtags2.h"
 
 
-#ifdef CONFIG_YAFFS_WINCE
-void yfsd_LockYAFFS(BOOL fsLockOnly);
-void yfsd_UnlockYAFFS(BOOL fsLockOnly);
-#endif
-
 #define YAFFS_PASSIVE_GC_CHUNKS 2
 
 #include "yaffs_ecc.h"
 
 
 /* Robustification (if it ever comes about...) */
-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND);
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk);
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
-				     const __u8 * data,
-				     const yaffs_ExtendedTags * tags);
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
-				    const yaffs_ExtendedTags * tags);
+static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND);
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+		int erasedOk);
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+				const __u8 *data,
+				const yaffs_ExtendedTags *tags);
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+				const yaffs_ExtendedTags *tags);
 
 /* Other local prototypes */
-static int yaffs_UnlinkObject( yaffs_Object *obj);
+static int yaffs_UnlinkObject(yaffs_Object *obj);
 static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
 
 static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
 
-static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device * dev,
-					     const __u8 * buffer,
-					     yaffs_ExtendedTags * tags,
-					     int useReserve);
-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
-				  int chunkInNAND, int inScan);
-
-static yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
-					   yaffs_ObjectType type);
-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
-				       yaffs_Object * obj);
-static int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name,
-				    int force, int isShrink, int shadows);
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj);
+static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev,
+					const __u8 *buffer,
+					yaffs_ExtendedTags *tags,
+					int useReserve);
+static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
+				int chunkInNAND, int inScan);
+
+static yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
+					yaffs_ObjectType type);
+static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+				yaffs_Object *obj);
+static int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name,
+				int force, int isShrink, int shadows);
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj);
 static int yaffs_CheckStructures(void);
-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
-			      int chunkOffset, int *limit);
-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in);
-
-static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo);
-
-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
-				    int lineNo);
+static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
+			int chunkOffset, int *limit);
+static int yaffs_DoGenericObjectDeletion(yaffs_Object *in);
+
+static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device *dev, int blockNo);
 
-static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
-				  int chunkInNAND);
 
-static int yaffs_UnlinkWorker(yaffs_Object * obj);
-static void yaffs_DestroyObject(yaffs_Object * obj);
+static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+				int chunkInNAND);
 
-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
-			   int chunkInObject);
+static int yaffs_UnlinkWorker(yaffs_Object *obj);
 
-loff_t yaffs_GetFileSize(yaffs_Object * obj);
+static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
+			int chunkInObject);
 
-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr);
+static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+				yaffs_BlockInfo **blockUsedPtr);
 
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev);
+static void yaffs_VerifyFreeChunks(yaffs_Device *dev);
 
 static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
 
+static void yaffs_VerifyDirectory(yaffs_Object *directory);
 #ifdef YAFFS_PARANOID
-static int yaffs_CheckFileSanity(yaffs_Object * in);
+static int yaffs_CheckFileSanity(yaffs_Object *in);
 #else
 #define yaffs_CheckFileSanity(in)
 #endif
 
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in);
-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId);
+static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in);
+static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId);
 
 static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
 
-static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
-				 yaffs_ExtendedTags * tags);
+static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+				yaffs_ExtendedTags *tags);
 
-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos);
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
-					  yaffs_FileStructure * fStruct,
-					  __u32 chunkId);
+static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+		unsigned pos);
+static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+					yaffs_FileStructure *fStruct,
+					__u32 chunkId);
 
 
 /* Function to calculate chunk and offset */
 
-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset)
+static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut,
+		__u32 *offsetOut)
 {
-	if(dev->chunkShift){
-		/* Easy-peasy power of 2 case */
-		*chunk  = (__u32)(addr >> dev->chunkShift);
-		*offset = (__u32)(addr & dev->chunkMask);
-	}
-	else if(dev->crumbsPerChunk)
-	{
-		/* Case where we're using "crumbs" */
-		*offset = (__u32)(addr & dev->crumbMask);
-		addr >>= dev->crumbShift;
-		*chunk = ((__u32)addr)/dev->crumbsPerChunk;
-		*offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift);
+	int chunk;
+	__u32 offset;
+
+	chunk  = (__u32)(addr >> dev->chunkShift);
+
+	if (dev->chunkDiv == 1) {
+		/* easy power of 2 case */
+		offset = (__u32)(addr & dev->chunkMask);
+	} else {
+		/* Non power-of-2 case */
+
+		loff_t chunkBase;
+
+		chunk /= dev->chunkDiv;
+
+		chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
+		offset = (__u32)(addr - chunkBase);
 	}
-	else
-		YBUG();
+
+	*chunkOut = chunk;
+	*offsetOut = offset;
 }
 
-/* Function to return the number of shifts for a power of 2 greater than or equal
- * to the given number
+/* Function to return the number of shifts for a power of 2 greater than or
+ * equal to the given number
  * Note we don't try to cater for all possible numbers and this does not have to
  * be hellishly efficient.
  */
@@ -153,13 +154,14 @@ static __u32 ShiftsGE(__u32 x)
 
 	nShifts = extraBits = 0;
 
-	while(x>1){
-		if(x & 1) extraBits++;
-		x>>=1;
+	while (x > 1) {
+		if (x & 1)
+			extraBits++;
+		x >>= 1;
 		nShifts++;
 	}
 
-	if(extraBits)
+	if (extraBits)
 		nShifts++;
 
 	return nShifts;
@@ -168,16 +170,17 @@ static __u32 ShiftsGE(__u32 x)
 /* Function to return the number of shifts to get a 1 in bit 0
  */
 
-static __u32 ShiftDiv(__u32 x)
+static __u32 Shifts(__u32 x)
 {
 	int nShifts;
 
 	nShifts =  0;
 
-	if(!x) return 0;
+	if (!x)
+		return 0;
 
-	while( !(x&1)){
-		x>>=1;
+	while (!(x&1)) {
+		x >>= 1;
 		nShifts++;
 	}
 
@@ -195,21 +198,25 @@ static int yaffs_InitialiseTempBuffers(y
 	int i;
 	__u8 *buf = (__u8 *)1;
 
-	memset(dev->tempBuffer,0,sizeof(dev->tempBuffer));
+	memset(dev->tempBuffer, 0, sizeof(dev->tempBuffer));
 
 	for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
 		dev->tempBuffer[i].line = 0;	/* not in use */
 		dev->tempBuffer[i].buffer = buf =
-		    YMALLOC_DMA(dev->nDataBytesPerChunk);
+		    YMALLOC_DMA(dev->totalBytesPerChunk);
 	}
 
 	return buf ? YAFFS_OK : YAFFS_FAIL;
-
 }
 
-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
+__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo)
 {
 	int i, j;
+
+	dev->tempInUse++;
+	if (dev->tempInUse > dev->maxTemp)
+		dev->maxTemp = dev->tempInUse;
+
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
 		if (dev->tempBuffer[i].line == 0) {
 			dev->tempBuffer[i].line = lineNo;
@@ -227,9 +234,9 @@ static __u8 *yaffs_GetTempBuffer(yaffs_D
 	T(YAFFS_TRACE_BUFFERS,
 	  (TSTR("Out of temp buffers at line %d, other held by lines:"),
 	   lineNo));
-	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
 		T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
-	}
+
 	T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
 
 	/*
@@ -242,10 +249,13 @@ static __u8 *yaffs_GetTempBuffer(yaffs_D
 
 }
 
-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
+void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer,
 				    int lineNo)
 {
 	int i;
+
+	dev->tempInUse--;
+
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
 		if (dev->tempBuffer[i].buffer == buffer) {
 			dev->tempBuffer[i].line = 0;
@@ -267,27 +277,26 @@ static void yaffs_ReleaseTempBuffer(yaff
 /*
  * Determine if we have a managed buffer.
  */
-int yaffs_IsManagedTempBuffer(yaffs_Device * dev, const __u8 * buffer)
+int yaffs_IsManagedTempBuffer(yaffs_Device *dev, const __u8 *buffer)
 {
 	int i;
+
 	for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
 		if (dev->tempBuffer[i].buffer == buffer)
 			return 1;
+	}
 
+	for (i = 0; i < dev->nShortOpCaches; i++) {
+		if (dev->srCache[i].data == buffer)
+			return 1;
 	}
 
-    for (i = 0; i < dev->nShortOpCaches; i++) {
-        if( dev->srCache[i].data == buffer )
-            return 1;
-
-    }
-
-    if (buffer == dev->checkpointBuffer)
-      return 1;
-
-    T(YAFFS_TRACE_ALWAYS,
-	  (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
-    return 0;
+	if (buffer == dev->checkpointBuffer)
+		return 1;
+
+	T(YAFFS_TRACE_ALWAYS,
+		(TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
+	return 0;
 }
 
 
@@ -296,62 +305,63 @@ int yaffs_IsManagedTempBuffer(yaffs_Devi
  * Chunk bitmap manipulations
  */
 
-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device * dev, int blk)
+static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk)
 {
 	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
 		T(YAFFS_TRACE_ERROR,
-		  (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
-		   blk));
+			(TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
+			blk));
 		YBUG();
 	}
 	return dev->chunkBits +
-	    (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
+		(dev->chunkBitmapStride * (blk - dev->internalStartBlock));
 }
 
 static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
 {
-	if(blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
-	   chunk < 0 || chunk >= dev->nChunksPerBlock) {
-	   T(YAFFS_TRACE_ERROR,
-	    (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),blk,chunk));
-	    YBUG();
+	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
+			chunk < 0 || chunk >= dev->nChunksPerBlock) {
+		T(YAFFS_TRACE_ERROR,
+		(TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
+			blk, chunk));
+		YBUG();
 	}
 }
 
-static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk)
+static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev, int blk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
 
 	memset(blkBits, 0, dev->chunkBitmapStride);
 }
 
-static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
 
-	yaffs_VerifyChunkBitId(dev,blk,chunk);
+	yaffs_VerifyChunkBitId(dev, blk, chunk);
 
 	blkBits[chunk / 8] &= ~(1 << (chunk & 7));
 }
 
-static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
 
-	yaffs_VerifyChunkBitId(dev,blk,chunk);
+	yaffs_VerifyChunkBitId(dev, blk, chunk);
 
 	blkBits[chunk / 8] |= (1 << (chunk & 7));
 }
 
-static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk)
+static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
-	yaffs_VerifyChunkBitId(dev,blk,chunk);
+	yaffs_VerifyChunkBitId(dev, blk, chunk);
 
 	return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
 }
 
-static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk)
+static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
 	int i;
@@ -363,17 +373,17 @@ static Y_INLINE int yaffs_StillSomeChunk
 	return 0;
 }
 
-static int yaffs_CountChunkBits(yaffs_Device * dev, int blk)
+static int yaffs_CountChunkBits(yaffs_Device *dev, int blk)
 {
 	__u8 *blkBits = yaffs_BlockBits(dev, blk);
 	int i;
 	int n = 0;
 	for (i = 0; i < dev->chunkBitmapStride; i++) {
 		__u8 x = *blkBits;
-		while(x){
-			if(x & 1)
+		while (x) {
+			if (x & 1)
 				n++;
-			x >>=1;
+			x >>= 1;
 		}
 
 		blkBits++;
@@ -400,7 +410,7 @@ static int yaffs_SkipNANDVerification(ya
 	return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
 }
 
-static const char * blockStateName[] = {
+static const char *blockStateName[] = {
 "Unknown",
 "Needs scanning",
 "Scanning",
@@ -413,64 +423,65 @@ static const char * blockStateName[] = {
 "Dead"
 };
 
-static void yaffs_VerifyBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
+static void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n)
 {
 	int actuallyUsed;
 	int inUse;
 
-	if(yaffs_SkipVerification(dev))
+	if (yaffs_SkipVerification(dev))
 		return;
 
 	/* Report illegal runtime states */
-	if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
-		T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState));
+	if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState));
 
-	switch(bi->blockState){
-	 case YAFFS_BLOCK_STATE_UNKNOWN:
-	 case YAFFS_BLOCK_STATE_SCANNING:
-	 case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
-		T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR),
-		n,blockStateName[bi->blockState]));
+	switch (bi->blockState) {
+	case YAFFS_BLOCK_STATE_UNKNOWN:
+	case YAFFS_BLOCK_STATE_SCANNING:
+	case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
+		n, blockStateName[bi->blockState]));
 	}
 
 	/* Check pages in use and soft deletions are legal */
 
 	actuallyUsed = bi->pagesInUse - bi->softDeletions;
 
-	if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
+	if (bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
 	   bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
 	   actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
-		T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
-		n,bi->pagesInUse,bi->softDeletions));
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
+		n, bi->pagesInUse, bi->softDeletions));
 
 
 	/* Check chunk bitmap legal */
-	inUse = yaffs_CountChunkBits(dev,n);
-	if(inUse != bi->pagesInUse)
-		T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
-			n,bi->pagesInUse,inUse));
+	inUse = yaffs_CountChunkBits(dev, n);
+	if (inUse != bi->pagesInUse)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
+			n, bi->pagesInUse, inUse));
 
 	/* Check that the sequence number is valid.
 	 * Ten million is legal, but is very unlikely
 	 */
-	if(dev->isYaffs2 &&
+	if (dev->isYaffs2 &&
 	   (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
-	   (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 ))
-		T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR),
-		n,bi->sequenceNumber));
-
+	   (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000))
+		T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has suspect sequence number of %d"TENDSTR),
+		n, bi->sequenceNumber));
 }
 
-static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
+static void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi,
+		int n)
 {
-	yaffs_VerifyBlock(dev,bi,n);
+	yaffs_VerifyBlock(dev, bi, n);
 
 	/* After collection the block should be in the erased state */
-	/* TODO: This will need to change if we do partial gc */
+	/* This will need to change if we do partial gc */
 
-	if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
-		T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
-			n,bi->blockState));
+	if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
+			bi->blockState != YAFFS_BLOCK_STATE_EMPTY) {
+		T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+			n, bi->blockState));
 	}
 }
 
@@ -480,52 +491,49 @@ static void yaffs_VerifyBlocks(yaffs_Dev
 	int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
 	int nIllegalBlockStates = 0;
 
-
-	if(yaffs_SkipVerification(dev))
+	if (yaffs_SkipVerification(dev))
 		return;
 
-	memset(nBlocksPerState,0,sizeof(nBlocksPerState));
-
+	memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
 
-	for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
-		yaffs_VerifyBlock(dev,bi,i);
+	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+		yaffs_VerifyBlock(dev, bi, i);
 
-		if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
+		if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
 			nBlocksPerState[bi->blockState]++;
 		else
 			nIllegalBlockStates++;
-
 	}
 
-	T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
-	T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR)));
+	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
+	T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
 
-	T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates));
-	if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
-		T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR)));
+	T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
+	if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+		T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
 
-	for(i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
+	for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
 		T(YAFFS_TRACE_VERIFY,
 		  (TSTR("%s %d blocks"TENDSTR),
-		  blockStateName[i],nBlocksPerState[i]));
+		  blockStateName[i], nBlocksPerState[i]));
 
-	if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+	if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
 		T(YAFFS_TRACE_VERIFY,
 		 (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
 		 dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
 
-	if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+	if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
 		T(YAFFS_TRACE_VERIFY,
 		 (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
 		 dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
 
-	if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+	if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
 		T(YAFFS_TRACE_VERIFY,
 		 (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
 		 nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
 
-	T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
+	T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
 
 }
 
@@ -535,26 +543,26 @@ static void yaffs_VerifyBlocks(yaffs_Dev
  */
 static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
 {
-	if(yaffs_SkipVerification(obj->myDev))
+	if (obj && yaffs_SkipVerification(obj->myDev))
 		return;
 
-	if(!(tags && obj && oh)){
-	 	T(YAFFS_TRACE_VERIFY,
-		 		(TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
-		 		(__u32)tags,(__u32)obj,(__u32)oh));
+	if (!(tags && obj && oh)) {
+		T(YAFFS_TRACE_VERIFY,
+				(TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
+				(__u32)tags, (__u32)obj, (__u32)oh));
 		return;
 	}
 
-	if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
-	   oh->type > YAFFS_OBJECT_TYPE_MAX)
-	 	T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
-		 tags->objectId, oh->type));
-
-	if(tags->objectId != obj->objectId)
-	 	T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
-		 tags->objectId, obj->objectId));
+	if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+			oh->type > YAFFS_OBJECT_TYPE_MAX)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
+			tags->objectId, oh->type));
+
+	if (tags->objectId != obj->objectId)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch objectId %d"TENDSTR),
+			tags->objectId, obj->objectId));
 
 
 	/*
@@ -563,46 +571,43 @@ static void yaffs_VerifyObjectHeader(yaf
 	 * Tests do not apply to the root object.
 	 */
 
-	if(parentCheck && tags->objectId > 1 && !obj->parent)
-	 	T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
-	 	 tags->objectId, oh->parentObjectId));
-
-
-	if(parentCheck && obj->parent &&
-	   oh->parentObjectId != obj->parent->objectId &&
-	   (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
-	    obj->parent->objectId != YAFFS_OBJECTID_DELETED))
-	 	T(YAFFS_TRACE_VERIFY,
-		 (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
-	 	 tags->objectId, oh->parentObjectId, obj->parent->objectId));
+	if (parentCheck && tags->objectId > 1 && !obj->parent)
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
+			tags->objectId, oh->parentObjectId));
 
+	if (parentCheck && obj->parent &&
+			oh->parentObjectId != obj->parent->objectId &&
+			(oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
+			obj->parent->objectId != YAFFS_OBJECTID_DELETED))
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
+			tags->objectId, oh->parentObjectId, obj->parent->objectId));
 
-	if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */
+	if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */
 		T(YAFFS_TRACE_VERIFY,
-		(TSTR("Obj %d header name is NULL"TENDSTR),
-		 obj->objectId));
+			(TSTR("Obj %d header name is NULL"TENDSTR),
+			obj->objectId));
 
-	if(tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
+	if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
 		T(YAFFS_TRACE_VERIFY,
-		(TSTR("Obj %d header name is 0xFF"TENDSTR),
-		 obj->objectId));
+			(TSTR("Obj %d header name is 0xFF"TENDSTR),
+			obj->objectId));
 }
 
 
 
-static int yaffs_VerifyTnodeWorker(yaffs_Object * obj, yaffs_Tnode * tn,
-				  	__u32 level, int chunkOffset)
+static int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn,
+					__u32 level, int chunkOffset)
 {
 	int i;
 	yaffs_Device *dev = obj->myDev;
 	int ok = 1;
-	int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
 
 	if (tn) {
 		if (level > 0) {
 
-			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
+			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
 				if (tn->internal[i]) {
 					ok = yaffs_VerifyTnodeWorker(obj,
 							tn->internal[i],
@@ -611,20 +616,19 @@ static int yaffs_VerifyTnodeWorker(yaffs
 				}
 			}
 		} else if (level == 0) {
-			int i;
 			yaffs_ExtendedTags tags;
 			__u32 objectId = obj->objectId;
 
 			chunkOffset <<=  YAFFS_TNODES_LEVEL0_BITS;
 
-			for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){
-				__u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+			for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
+				__u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
 
-				if(theChunk > 0){
+				if (theChunk > 0) {
 					/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
-					yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
-					if(tags.objectId != objectId || tags.chunkId != chunkOffset){
-						T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+					yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+					if (tags.objectId != objectId || tags.chunkId != chunkOffset) {
+						T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
 							objectId, chunkOffset, theChunk,
 							tags.objectId, tags.chunkId));
 					}
@@ -646,13 +650,15 @@ static void yaffs_VerifyFile(yaffs_Objec
 	__u32 lastChunk;
 	__u32 x;
 	__u32 i;
-	int ok;
 	yaffs_Device *dev;
 	yaffs_ExtendedTags tags;
 	yaffs_Tnode *tn;
 	__u32 objectId;
 
-	if(obj && yaffs_SkipVerification(obj->myDev))
+	if (!obj)
+		return;
+
+	if (yaffs_SkipVerification(obj->myDev))
 		return;
 
 	dev = obj->myDev;
@@ -662,17 +668,17 @@ static void yaffs_VerifyFile(yaffs_Objec
 	lastChunk =  obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
 	x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
 	requiredTallness = 0;
-	while (x> 0) {
+	while (x > 0) {
 		x >>= YAFFS_TNODES_INTERNAL_BITS;
 		requiredTallness++;
 	}
 
 	actualTallness = obj->variant.fileVariant.topLevel;
 
-	if(requiredTallness > actualTallness )
+	if (requiredTallness > actualTallness)
 		T(YAFFS_TRACE_VERIFY,
 		(TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
-		 obj->objectId,actualTallness, requiredTallness));
+		 obj->objectId, actualTallness, requiredTallness));
 
 
 	/* Check that the chunks in the tnode tree are all correct.
@@ -680,39 +686,31 @@ static void yaffs_VerifyFile(yaffs_Objec
 	 * checking the tags for every chunk match.
 	 */
 
-	if(yaffs_SkipNANDVerification(dev))
+	if (yaffs_SkipNANDVerification(dev))
 		return;
 
-	for(i = 1; i <= lastChunk; i++){
-		tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i);
+	for (i = 1; i <= lastChunk; i++) {
+		tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i);
 
 		if (tn) {
-			__u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
-			if(theChunk > 0){
+			__u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
+			if (theChunk > 0) {
 				/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
-				yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
-				if(tags.objectId != objectId || tags.chunkId != i){
-					T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
+				yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags);
+				if (tags.objectId != objectId || tags.chunkId != i) {
+					T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
 						objectId, i, theChunk,
 						tags.objectId, tags.chunkId));
 				}
 			}
 		}
-
 	}
-
 }
 
-static void yaffs_VerifyDirectory(yaffs_Object *obj)
-{
-	if(obj && yaffs_SkipVerification(obj->myDev))
-		return;
-
-}
 
 static void yaffs_VerifyHardLink(yaffs_Object *obj)
 {
-	if(obj && yaffs_SkipVerification(obj->myDev))
+	if (obj && yaffs_SkipVerification(obj->myDev))
 		return;
 
 	/* Verify sane equivalent object */
@@ -720,7 +718,7 @@ static void yaffs_VerifyHardLink(yaffs_O
 
 static void yaffs_VerifySymlink(yaffs_Object *obj)
 {
-	if(obj && yaffs_SkipVerification(obj->myDev))
+	if (obj && yaffs_SkipVerification(obj->myDev))
 		return;
 
 	/* Verify symlink string */
@@ -728,7 +726,7 @@ static void yaffs_VerifySymlink(yaffs_Ob
 
 static void yaffs_VerifySpecial(yaffs_Object *obj)
 {
-	if(obj && yaffs_SkipVerification(obj->myDev))
+	if (obj && yaffs_SkipVerification(obj->myDev))
 		return;
 }
 
@@ -740,14 +738,19 @@ static void yaffs_VerifyObject(yaffs_Obj
 	__u32 chunkMax;
 
 	__u32 chunkIdOk;
-	__u32 chunkIsLive;
+	__u32 chunkInRange;
+	__u32 chunkShouldNotBeDeleted;
+	__u32 chunkValid;
+
+	if (!obj)
+		return;
 
-	if(!obj)
+	if (obj->beingCreated)
 		return;
 
 	dev = obj->myDev;
 
-	if(yaffs_SkipVerification(dev))
+	if (yaffs_SkipVerification(dev))
 		return;
 
 	/* Check sane object header chunk */
@@ -755,50 +758,54 @@ static void yaffs_VerifyObject(yaffs_Obj
 	chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
 	chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
 
-	chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax);
-	chunkIsLive = chunkIdOk &&
+	chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
+	chunkIdOk = chunkInRange || obj->hdrChunk == 0;
+	chunkValid = chunkInRange &&
 			yaffs_CheckChunkBit(dev,
-					    obj->chunkId / dev->nChunksPerBlock,
-					    obj->chunkId % dev->nChunksPerBlock);
-	if(!obj->fake &&
-	    (!chunkIdOk || !chunkIsLive)) {
-	   T(YAFFS_TRACE_VERIFY,
-	   (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
-	   obj->objectId,obj->chunkId,
-	   chunkIdOk ? "" : ",out of range",
-	   chunkIsLive || !chunkIdOk ? "" : ",marked as deleted"));
+					obj->hdrChunk / dev->nChunksPerBlock,
+					obj->hdrChunk % dev->nChunksPerBlock);
+	chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
+
+	if (!obj->fake &&
+			(!chunkIdOk || chunkShouldNotBeDeleted)) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
+			obj->objectId, obj->hdrChunk,
+			chunkIdOk ? "" : ",out of range",
+			chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
 	}
 
-	if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) {
+	if (chunkValid && !yaffs_SkipNANDVerification(dev)) {
 		yaffs_ExtendedTags tags;
 		yaffs_ObjectHeader *oh;
-		__u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
+		__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
 
 		oh = (yaffs_ObjectHeader *)buffer;
 
-		yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags);
+		yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer,
+				&tags);
 
-		yaffs_VerifyObjectHeader(obj,oh,&tags,1);
+		yaffs_VerifyObjectHeader(obj, oh, &tags, 1);
 
-		yaffs_ReleaseTempBuffer(dev,buffer,__LINE__);
+		yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
 	}
 
 	/* Verify it has a parent */
-	if(obj && !obj->fake &&
-	   (!obj->parent || obj->parent->myDev != dev)){
-	   T(YAFFS_TRACE_VERIFY,
-	   (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
-	   obj->objectId,obj->parent));
+	if (obj && !obj->fake &&
+			(!obj->parent || obj->parent->myDev != dev)) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+			obj->objectId, obj->parent));
 	}
 
 	/* Verify parent is a directory */
-	if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
-	   T(YAFFS_TRACE_VERIFY,
-	   (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
-	   obj->objectId,obj->parent->variantType));
+	if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_VERIFY,
+			(TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+			obj->objectId, obj->parent->variantType));
 	}
 
-	switch(obj->variantType){
+	switch (obj->variantType) {
 	case YAFFS_OBJECT_TYPE_FILE:
 		yaffs_VerifyFile(obj);
 		break;
@@ -818,33 +825,30 @@ static void yaffs_VerifyObject(yaffs_Obj
 	default:
 		T(YAFFS_TRACE_VERIFY,
 		(TSTR("Obj %d has illegaltype %d"TENDSTR),
-		obj->objectId,obj->variantType));
+		obj->objectId, obj->variantType));
 		break;
 	}
-
-
 }
 
 static void yaffs_VerifyObjects(yaffs_Device *dev)
 {
 	yaffs_Object *obj;
 	int i;
-	struct list_head *lh;
+	struct ylist_head *lh;
 
-	if(yaffs_SkipVerification(dev))
+	if (yaffs_SkipVerification(dev))
 		return;
 
 	/* Iterate through the objects in each hash entry */
 
-	 for(i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++){
-	 	list_for_each(lh, &dev->objectBucket[i].list) {
+	for (i = 0; i <  YAFFS_NOBJECT_BUCKETS; i++) {
+		ylist_for_each(lh, &dev->objectBucket[i].list) {
 			if (lh) {
-				obj = list_entry(lh, yaffs_Object, hashLink);
+				obj = ylist_entry(lh, yaffs_Object, hashLink);
 				yaffs_VerifyObject(obj);
 			}
 		}
-	 }
-
+	}
 }
 
 
@@ -855,19 +859,20 @@ static void yaffs_VerifyObjects(yaffs_De
 static Y_INLINE int yaffs_HashFunction(int n)
 {
 	n = abs(n);
-	return (n % YAFFS_NOBJECT_BUCKETS);
+	return n % YAFFS_NOBJECT_BUCKETS;
 }
 
 /*
- * Access functions to useful fake objects
+ * Access functions to useful fake objects.
+ * Note that root might have a presence in NAND if permissions are set.
  */
 
-yaffs_Object *yaffs_Root(yaffs_Device * dev)
+yaffs_Object *yaffs_Root(yaffs_Device *dev)
 {
 	return dev->rootDir;
 }
 
-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev)
+yaffs_Object *yaffs_LostNFound(yaffs_Device *dev)
 {
 	return dev->lostNFoundDir;
 }
@@ -877,7 +882,7 @@ yaffs_Object *yaffs_LostNFound(yaffs_Dev
  *  Erased NAND checking functions
  */
 
-int yaffs_CheckFF(__u8 * buffer, int nBytes)
+int yaffs_CheckFF(__u8 *buffer, int nBytes)
 {
 	/* Horrible, slow implementation */
 	while (nBytes--) {
@@ -889,9 +894,8 @@ int yaffs_CheckFF(__u8 * buffer, int nBy
 }
 
 static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
-				  int chunkInNAND)
+				int chunkInNAND)
 {
-
 	int retval = YAFFS_OK;
 	__u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
 	yaffs_ExtendedTags tags;
@@ -899,10 +903,9 @@ static int yaffs_CheckChunkErased(struct
 
 	result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
 
-	if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+	if (tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
 		retval = YAFFS_FAIL;
 
-
 	if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
 		T(YAFFS_TRACE_NANDACCESS,
 		  (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
@@ -915,11 +918,10 @@ static int yaffs_CheckChunkErased(struct
 
 }
 
-
 static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
-					     const __u8 * data,
-					     yaffs_ExtendedTags * tags,
-					     int useReserve)
+					const __u8 *data,
+					yaffs_ExtendedTags *tags,
+					int useReserve)
 {
 	int attempts = 0;
 	int writeOk = 0;
@@ -972,7 +974,7 @@ static int yaffs_WriteNewChunkWithTagsTo
 			erasedOk = yaffs_CheckChunkErased(dev, chunk);
 			if (erasedOk != YAFFS_OK) {
 				T(YAFFS_TRACE_ERROR,
-				(TSTR ("**>> yaffs chunk %d was not erased"
+				(TSTR("**>> yaffs chunk %d was not erased"
 				TENDSTR), chunk));
 
 				/* try another chunk */
@@ -992,7 +994,11 @@ static int yaffs_WriteNewChunkWithTagsTo
 		/* Copy the data into the robustification buffer */
 		yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
 
-	} while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts);
+	} while (writeOk != YAFFS_OK &&
+		(yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
+
+	if (!writeOk)
+		chunk = -1;
 
 	if (attempts > 1) {
 		T(YAFFS_TRACE_ERROR,
@@ -1009,13 +1015,35 @@ static int yaffs_WriteNewChunkWithTagsTo
  * Block retiring for handling a broken block.
  */
 
-static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
+static void yaffs_RetireBlock(yaffs_Device *dev, int blockInNAND)
 {
 	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
 
 	yaffs_InvalidateCheckpoint(dev);
 
-	yaffs_MarkBlockBad(dev, blockInNAND);
+	if (yaffs_MarkBlockBad(dev, blockInNAND) != YAFFS_OK) {
+		if (yaffs_EraseBlockInNAND(dev, blockInNAND) != YAFFS_OK) {
+			T(YAFFS_TRACE_ALWAYS, (TSTR(
+				"yaffs: Failed to mark bad and erase block %d"
+				TENDSTR), blockInNAND));
+		} else {
+			yaffs_ExtendedTags tags;
+			int chunkId = blockInNAND * dev->nChunksPerBlock;
+
+			__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+
+			memset(buffer, 0xff, dev->nDataBytesPerChunk);
+			yaffs_InitialiseTags(&tags);
+			tags.sequenceNumber = YAFFS_SEQUENCE_BAD_BLOCK;
+			if (dev->writeChunkWithTagsToNAND(dev, chunkId -
+				dev->chunkOffset, buffer, &tags) != YAFFS_OK)
+				T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
+					TCONT("write bad block marker to block %d")
+					TENDSTR), blockInNAND));
+
+			yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
+		}
+	}
 
 	bi->blockState = YAFFS_BLOCK_STATE_DEAD;
 	bi->gcPrioritise = 0;
@@ -1029,49 +1057,45 @@ static void yaffs_RetireBlock(yaffs_Devi
  *
  */
 
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
-				     const __u8 * data,
-				     const yaffs_ExtendedTags * tags)
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+				const __u8 *data,
+				const yaffs_ExtendedTags *tags)
 {
 }
 
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
-				    const yaffs_ExtendedTags * tags)
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+				const yaffs_ExtendedTags *tags)
 {
 }
 
 void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
 {
-	if(!bi->gcPrioritise){
+	if (!bi->gcPrioritise) {
 		bi->gcPrioritise = 1;
 		dev->hasPendingPrioritisedGCs = 1;
-		bi->chunkErrorStrikes ++;
+		bi->chunkErrorStrikes++;
 
-		if(bi->chunkErrorStrikes > 3){
+		if (bi->chunkErrorStrikes > 3) {
 			bi->needsRetiring = 1; /* Too many stikes, so retire this */
 			T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
 
 		}
-
 	}
 }
 
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk)
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND,
+		int erasedOk)
 {
-
 	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
 	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
 
-	yaffs_HandleChunkError(dev,bi);
+	yaffs_HandleChunkError(dev, bi);
 
-
-	if(erasedOk ) {
+	if (erasedOk) {
 		/* Was an actual write failure, so mark the block for retirement  */
 		bi->needsRetiring = 1;
 		T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
 		  (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
-
-
 	}
 
 	/* Delete the chunk */
@@ -1081,12 +1105,12 @@ static void yaffs_HandleWriteChunkError(
 
 /*---------------- Name handling functions ------------*/
 
-static __u16 yaffs_CalcNameSum(const YCHAR * name)
+static __u16 yaffs_CalcNameSum(const YCHAR *name)
 {
 	__u16 sum = 0;
 	__u16 i = 1;
 
-	YUCHAR *bname = (YUCHAR *) name;
+	const YUCHAR *bname = (const YUCHAR *) name;
 	if (bname) {
 		while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
 
@@ -1102,14 +1126,14 @@ static __u16 yaffs_CalcNameSum(const YCH
 	return sum;
 }
 
-static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name)
+static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name)
 {
 #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-	if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) {
+	memset(obj->shortName, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
+	if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH)
 		yaffs_strcpy(obj->shortName, name);
-	} else {
+	else
 		obj->shortName[0] = _Y('\0');
-	}
 #endif
 	obj->sum = yaffs_CalcNameSum(name);
 }
@@ -1126,7 +1150,7 @@ static void yaffs_SetObjectName(yaffs_Ob
  * Don't use this function directly
  */
 
-static int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes)
+static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes)
 {
 	int i;
 	int tnodeSize;
@@ -1143,6 +1167,9 @@ static int yaffs_CreateTnodes(yaffs_Devi
 	 * Must be a multiple of 32-bits  */
 	tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
 
+	if (tnodeSize < sizeof(yaffs_Tnode))
+		tnodeSize = sizeof(yaffs_Tnode);
+
 	/* make these things */
 
 	newTnodes = YMALLOC(nTnodes * tnodeSize);
@@ -1150,7 +1177,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
 
 	if (!newTnodes) {
 		T(YAFFS_TRACE_ERROR,
-		  (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+			(TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
 		return YAFFS_FAIL;
 	}
 
@@ -1170,7 +1197,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
 	dev->freeTnodes = newTnodes;
 #else
 	/* New hookup for wide tnodes */
-	for(i = 0; i < nTnodes -1; i++) {
+	for (i = 0; i < nTnodes - 1; i++) {
 		curr = (yaffs_Tnode *) &mem[i * tnodeSize];
 		next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
 		curr->internal[0] = next;
@@ -1197,7 +1224,6 @@ static int yaffs_CreateTnodes(yaffs_Devi
 		  (TSTR
 		   ("yaffs: Could not add tnodes to management list" TENDSTR)));
 		   return YAFFS_FAIL;
-
 	} else {
 		tnl->tnodes = newTnodes;
 		tnl->next = dev->allocatedTnodeList;
@@ -1211,14 +1237,13 @@ static int yaffs_CreateTnodes(yaffs_Devi
 
 /* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
 
-static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev)
+static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device *dev)
 {
 	yaffs_Tnode *tn = NULL;
 
 	/* If there are none left make more */
-	if (!dev->freeTnodes) {
+	if (!dev->freeTnodes)
 		yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
-	}
 
 	if (dev->freeTnodes) {
 		tn = dev->freeTnodes;
@@ -1233,21 +1258,27 @@ static yaffs_Tnode *yaffs_GetTnodeRaw(ya
 		dev->nFreeTnodes--;
 	}
 
+	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
 	return tn;
 }
 
-static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev)
+static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev)
 {
 	yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
+	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
 
-	if(tn)
-		memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+	if (tnodeSize < sizeof(yaffs_Tnode))
+		tnodeSize = sizeof(yaffs_Tnode);
+
+	if (tn)
+		memset(tn, 0, tnodeSize);
 
 	return tn;
 }
 
 /* FreeTnode frees up a tnode and puts it back on the free list */
-static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn)
+static void yaffs_FreeTnode(yaffs_Device *dev, yaffs_Tnode *tn)
 {
 	if (tn) {
 #ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
@@ -1262,9 +1293,10 @@ static void yaffs_FreeTnode(yaffs_Device
 		dev->freeTnodes = tn;
 		dev->nFreeTnodes++;
 	}
+	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
 }
 
-static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
+static void yaffs_DeinitialiseTnodes(yaffs_Device *dev)
 {
 	/* Free the list of allocated tnodes */
 	yaffs_TnodeList *tmp;
@@ -1282,71 +1314,72 @@ static void yaffs_DeinitialiseTnodes(yaf
 	dev->nFreeTnodes = 0;
 }
 
-static void yaffs_InitialiseTnodes(yaffs_Device * dev)
+static void yaffs_InitialiseTnodes(yaffs_Device *dev)
 {
 	dev->allocatedTnodeList = NULL;
 	dev->freeTnodes = NULL;
 	dev->nFreeTnodes = 0;
 	dev->nTnodesCreated = 0;
-
 }
 
 
-void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, unsigned val)
+void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos,
+		unsigned val)
 {
-  __u32 *map = (__u32 *)tn;
-  __u32 bitInMap;
-  __u32 bitInWord;
-  __u32 wordInMap;
-  __u32 mask;
+	__u32 *map = (__u32 *)tn;
+	__u32 bitInMap;
+	__u32 bitInWord;
+	__u32 wordInMap;
+	__u32 mask;
 
-  pos &= YAFFS_TNODES_LEVEL0_MASK;
-  val >>= dev->chunkGroupBits;
+	pos &= YAFFS_TNODES_LEVEL0_MASK;
+	val >>= dev->chunkGroupBits;
 
-  bitInMap = pos * dev->tnodeWidth;
-  wordInMap = bitInMap /32;
-  bitInWord = bitInMap & (32 -1);
+	bitInMap = pos * dev->tnodeWidth;
+	wordInMap = bitInMap / 32;
+	bitInWord = bitInMap & (32 - 1);
 
-  mask = dev->tnodeMask << bitInWord;
+	mask = dev->tnodeMask << bitInWord;
 
-  map[wordInMap] &= ~mask;
-  map[wordInMap] |= (mask & (val << bitInWord));
+	map[wordInMap] &= ~mask;
+	map[wordInMap] |= (mask & (val << bitInWord));
 
-  if(dev->tnodeWidth > (32-bitInWord)) {
-    bitInWord = (32 - bitInWord);
-    wordInMap++;;
-    mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
-    map[wordInMap] &= ~mask;
-    map[wordInMap] |= (mask & (val >> bitInWord));
-  }
+	if (dev->tnodeWidth > (32 - bitInWord)) {
+		bitInWord = (32 - bitInWord);
+		wordInMap++;;
+		mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
+		map[wordInMap] &= ~mask;
+		map[wordInMap] |= (mask & (val >> bitInWord));
+	}
 }
 
-static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos)
+static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn,
+		unsigned pos)
 {
-  __u32 *map = (__u32 *)tn;
-  __u32 bitInMap;
-  __u32 bitInWord;
-  __u32 wordInMap;
-  __u32 val;
+	__u32 *map = (__u32 *)tn;
+	__u32 bitInMap;
+	__u32 bitInWord;
+	__u32 wordInMap;
+	__u32 val;
 
-  pos &= YAFFS_TNODES_LEVEL0_MASK;
+	pos &= YAFFS_TNODES_LEVEL0_MASK;
 
-  bitInMap = pos * dev->tnodeWidth;
-  wordInMap = bitInMap /32;
-  bitInWord = bitInMap & (32 -1);
+	bitInMap = pos * dev->tnodeWidth;
+	wordInMap = bitInMap / 32;
+	bitInWord = bitInMap & (32 - 1);
 
-  val = map[wordInMap] >> bitInWord;
+	val = map[wordInMap] >> bitInWord;
 
-  if(dev->tnodeWidth > (32-bitInWord)) {
-    bitInWord = (32 - bitInWord);
-    wordInMap++;;
-    val |= (map[wordInMap] << bitInWord);
-  }
+	if	(dev->tnodeWidth > (32 - bitInWord)) {
+		bitInWord = (32 - bitInWord);
+		wordInMap++;;
+		val |= (map[wordInMap] << bitInWord);
+	}
 
-  val &= dev->tnodeMask;
-  val <<= dev->chunkGroupBits;
+	val &= dev->tnodeMask;
+	val <<= dev->chunkGroupBits;
 
-  return val;
+	return val;
 }
 
 /* ------------------- End of individual tnode manipulation -----------------*/
@@ -1357,24 +1390,21 @@ static __u32 yaffs_GetChunkGroupBase(yaf
  */
 
 /* FindLevel0Tnode finds the level 0 tnode, if one exists. */
-static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
-					  yaffs_FileStructure * fStruct,
-					  __u32 chunkId)
+static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,
+					yaffs_FileStructure *fStruct,
+					__u32 chunkId)
 {
-
 	yaffs_Tnode *tn = fStruct->top;
 	__u32 i;
 	int requiredTallness;
 	int level = fStruct->topLevel;
 
 	/* Check sane level and chunk Id */
-	if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) {
+	if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
 		return NULL;
-	}
 
-	if (chunkId > YAFFS_MAX_CHUNK_ID) {
+	if (chunkId > YAFFS_MAX_CHUNK_ID)
 		return NULL;
-	}
 
 	/* First check we're tall enough (ie enough topLevel) */
 
@@ -1385,22 +1415,17 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
 		requiredTallness++;
 	}
 
-	if (requiredTallness > fStruct->topLevel) {
-		/* Not tall enough, so we can't find it, return NULL. */
-		return NULL;
-	}
+	if (requiredTallness > fStruct->topLevel)
+		return NULL; /* Not tall enough, so we can't find it */
 
 	/* Traverse down to level 0 */
 	while (level > 0 && tn) {
-		tn = tn->
-		    internal[(chunkId >>
-			       ( YAFFS_TNODES_LEVEL0_BITS +
-			         (level - 1) *
-			         YAFFS_TNODES_INTERNAL_BITS)
-			      ) &
-			     YAFFS_TNODES_INTERNAL_MASK];
+		tn = tn->internal[(chunkId >>
+			(YAFFS_TNODES_LEVEL0_BITS +
+				(level - 1) *
+				YAFFS_TNODES_INTERNAL_BITS)) &
+			YAFFS_TNODES_INTERNAL_MASK];
 		level--;
-
 	}
 
 	return tn;
@@ -1417,12 +1442,11 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
  *  be plugged into the ttree.
  */
 
-static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
-					       yaffs_FileStructure * fStruct,
-					       __u32 chunkId,
-					       yaffs_Tnode *passedTn)
+static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev,
+					yaffs_FileStructure *fStruct,
+					__u32 chunkId,
+					yaffs_Tnode *passedTn)
 {
-
 	int requiredTallness;
 	int i;
 	int l;
@@ -1432,13 +1456,11 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
 
 
 	/* Check sane level and page Id */
-	if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) {
+	if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL)
 		return NULL;
-	}
 
-	if (chunkId > YAFFS_MAX_CHUNK_ID) {
+	if (chunkId > YAFFS_MAX_CHUNK_ID)
 		return NULL;
-	}
 
 	/* First check we're tall enough (ie enough topLevel) */
 
@@ -1451,7 +1473,7 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
 
 
 	if (requiredTallness > fStruct->topLevel) {
-		/* Not tall enough,gotta make the tree taller */
+		/* Not tall enough, gotta make the tree taller */
 		for (i = fStruct->topLevel; i < requiredTallness; i++) {
 
 			tn = yaffs_GetTnode(dev);
@@ -1473,27 +1495,27 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
 	l = fStruct->topLevel;
 	tn = fStruct->top;
 
-	if(l > 0) {
+	if (l > 0) {
 		while (l > 0 && tn) {
 			x = (chunkId >>
-			     ( YAFFS_TNODES_LEVEL0_BITS +
+			     (YAFFS_TNODES_LEVEL0_BITS +
 			      (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
 			    YAFFS_TNODES_INTERNAL_MASK;
 
 
-			if((l>1) && !tn->internal[x]){
+			if ((l > 1) && !tn->internal[x]) {
 				/* Add missing non-level-zero tnode */
 				tn->internal[x] = yaffs_GetTnode(dev);
 
-			} else if(l == 1) {
+			} else if (l == 1) {
 				/* Looking from level 1 at level 0 */
-			 	if (passedTn) {
+				if (passedTn) {
 					/* If we already have one, then release it.*/
-					if(tn->internal[x])
-						yaffs_FreeTnode(dev,tn->internal[x]);
+					if (tn->internal[x])
+						yaffs_FreeTnode(dev, tn->internal[x]);
 					tn->internal[x] = passedTn;
 
-				} else if(!tn->internal[x]) {
+				} else if (!tn->internal[x]) {
 					/* Don't have one, none passed in */
 					tn->internal[x] = yaffs_GetTnode(dev);
 				}
@@ -1504,31 +1526,29 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
 		}
 	} else {
 		/* top is level 0 */
-		if(passedTn) {
-			memcpy(tn,passedTn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
-			yaffs_FreeTnode(dev,passedTn);
+		if (passedTn) {
+			memcpy(tn, passedTn, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+			yaffs_FreeTnode(dev, passedTn);
 		}
 	}
 
 	return tn;
 }
 
-static int yaffs_FindChunkInGroup(yaffs_Device * dev, int theChunk,
-				  yaffs_ExtendedTags * tags, int objectId,
-				  int chunkInInode)
+static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk,
+				yaffs_ExtendedTags *tags, int objectId,
+				int chunkInInode)
 {
 	int j;
 
 	for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
-		if (yaffs_CheckChunkBit
-		    (dev, theChunk / dev->nChunksPerBlock,
-		     theChunk % dev->nChunksPerBlock)) {
+		if (yaffs_CheckChunkBit(dev, theChunk / dev->nChunksPerBlock,
+				theChunk % dev->nChunksPerBlock)) {
 			yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
 							tags);
 			if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
 				/* found it; */
 				return theChunk;
-
 			}
 		}
 		theChunk++;
@@ -1543,7 +1563,7 @@ static int yaffs_FindChunkInGroup(yaffs_
  * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
  */
 
-static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
+static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level,
 			      int chunkOffset, int *limit)
 {
 	int i;
@@ -1557,7 +1577,6 @@ static int yaffs_DeleteWorker(yaffs_Obje
 
 	if (tn) {
 		if (level > 0) {
-
 			for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
 			     i--) {
 				if (tn->internal[i]) {
@@ -1565,17 +1584,17 @@ static int yaffs_DeleteWorker(yaffs_Obje
 						allDone = 0;
 					} else {
 						allDone =
-						    yaffs_DeleteWorker(in,
-								       tn->
-								       internal
-								       [i],
-								       level -
-								       1,
-								       (chunkOffset
+							yaffs_DeleteWorker(in,
+								tn->
+								internal
+								[i],
+								level -
+								1,
+								(chunkOffset
 									<<
 									YAFFS_TNODES_INTERNAL_BITS)
-								       + i,
-								       limit);
+								+ i,
+								limit);
 					}
 					if (allDone) {
 						yaffs_FreeTnode(dev,
@@ -1584,27 +1603,25 @@ static int yaffs_DeleteWorker(yaffs_Obje
 						tn->internal[i] = NULL;
 					}
 				}
-
 			}
 			return (allDone) ? 1 : 0;
 		} else if (level == 0) {
 			int hitLimit = 0;
 
 			for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
-			     i--) {
-			        theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+					i--) {
+				theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
 				if (theChunk) {
 
-					chunkInInode =
-					    (chunkOffset <<
-					     YAFFS_TNODES_LEVEL0_BITS) + i;
+					chunkInInode = (chunkOffset <<
+						YAFFS_TNODES_LEVEL0_BITS) + i;
 
 					foundChunk =
-					    yaffs_FindChunkInGroup(dev,
-								   theChunk,
-								   &tags,
-								   in->objectId,
-								   chunkInInode);
+						yaffs_FindChunkInGroup(dev,
+								theChunk,
+								&tags,
+								in->objectId,
+								chunkInInode);
 
 					if (foundChunk > 0) {
 						yaffs_DeleteChunk(dev,
@@ -1613,14 +1630,13 @@ static int yaffs_DeleteWorker(yaffs_Obje
 						in->nDataChunks--;
 						if (limit) {
 							*limit = *limit - 1;
-							if (*limit <= 0) {
+							if (*limit <= 0)
 								hitLimit = 1;
-							}
 						}
 
 					}
 
-					yaffs_PutLevel0Tnode(dev,tn,i,0);
+					yaffs_PutLevel0Tnode(dev, tn, i, 0);
 				}
 
 			}
@@ -1634,9 +1650,8 @@ static int yaffs_DeleteWorker(yaffs_Obje
 
 }
 
-static void yaffs_SoftDeleteChunk(yaffs_Device * dev, int chunk)
+static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk)
 {
-
 	yaffs_BlockInfo *theBlock;
 
 	T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
@@ -1654,7 +1669,7 @@ static void yaffs_SoftDeleteChunk(yaffs_
  * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
  */
 
-static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
+static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn,
 				  __u32 level, int chunkOffset)
 {
 	int i;
@@ -1691,14 +1706,14 @@ static int yaffs_SoftDeleteWorker(yaffs_
 		} else if (level == 0) {
 
 			for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
-				theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+				theChunk = yaffs_GetChunkGroupBase(dev, tn, i);
 				if (theChunk) {
 					/* Note this does not find the real chunk, only the chunk group.
 					 * We make an assumption that a chunk group is not larger than
 					 * a block.
 					 */
 					yaffs_SoftDeleteChunk(dev, theChunk);
-					yaffs_PutLevel0Tnode(dev,tn,i,0);
+					yaffs_PutLevel0Tnode(dev, tn, i, 0);
 				}
 
 			}
@@ -1712,7 +1727,7 @@ static int yaffs_SoftDeleteWorker(yaffs_
 
 }
 
-static void yaffs_SoftDeleteFile(yaffs_Object * obj)
+static void yaffs_SoftDeleteFile(yaffs_Object *obj)
 {
 	if (obj->deleted &&
 	    obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
@@ -1746,8 +1761,8 @@ static void yaffs_SoftDeleteFile(yaffs_O
  * by a special case.
  */
 
-static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn,
-				      __u32 level, int del0)
+static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn,
+				__u32 level, int del0)
 {
 	int i;
 	int hasData;
@@ -1763,9 +1778,8 @@ static yaffs_Tnode *yaffs_PruneWorker(ya
 						      (i == 0) ? del0 : 1);
 			}
 
-			if (tn->internal[i]) {
+			if (tn->internal[i])
 				hasData++;
-			}
 		}
 
 		if (hasData == 0 && del0) {
@@ -1781,8 +1795,8 @@ static yaffs_Tnode *yaffs_PruneWorker(ya
 
 }
 
-static int yaffs_PruneFileStructure(yaffs_Device * dev,
-				    yaffs_FileStructure * fStruct)
+static int yaffs_PruneFileStructure(yaffs_Device *dev,
+				yaffs_FileStructure *fStruct)
 {
 	int i;
 	int hasData;
@@ -1805,9 +1819,8 @@ static int yaffs_PruneFileStructure(yaff
 
 			hasData = 0;
 			for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
-				if (tn->internal[i]) {
+				if (tn->internal[i])
 					hasData++;
-				}
 			}
 
 			if (!hasData) {
@@ -1828,7 +1841,7 @@ static int yaffs_PruneFileStructure(yaff
 /* yaffs_CreateFreeObjects creates a bunch more objects and
  * adds them to the object free list.
  */
-static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects)
+static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects)
 {
 	int i;
 	yaffs_Object *newObjects;
@@ -1842,9 +1855,9 @@ static int yaffs_CreateFreeObjects(yaffs
 	list = YMALLOC(sizeof(yaffs_ObjectList));
 
 	if (!newObjects || !list) {
-		if(newObjects)
+		if (newObjects)
 			YFREE(newObjects);
-		if(list)
+		if (list)
 			YFREE(list);
 		T(YAFFS_TRACE_ALLOCATE,
 		  (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
@@ -1854,7 +1867,7 @@ static int yaffs_CreateFreeObjects(yaffs
 	/* Hook them into the free list */
 	for (i = 0; i < nObjects - 1; i++) {
 		newObjects[i].siblings.next =
-		    (struct list_head *)(&newObjects[i + 1]);
+				(struct ylist_head *)(&newObjects[i + 1]);
 	}
 
 	newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
@@ -1873,85 +1886,109 @@ static int yaffs_CreateFreeObjects(yaffs
 
 
 /* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
-static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device * dev)
+static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device *dev)
 {
 	yaffs_Object *tn = NULL;
 
+#ifdef VALGRIND_TEST
+	tn = YMALLOC(sizeof(yaffs_Object));
+#else
 	/* If there are none left make more */
-	if (!dev->freeObjects) {
+	if (!dev->freeObjects)
 		yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
-	}
 
 	if (dev->freeObjects) {
 		tn = dev->freeObjects;
 		dev->freeObjects =
-		    (yaffs_Object *) (dev->freeObjects->siblings.next);
+			(yaffs_Object *) (dev->freeObjects->siblings.next);
 		dev->nFreeObjects--;
-
+	}
+#endif
+	if (tn) {
 		/* Now sweeten it up... */
 
 		memset(tn, 0, sizeof(yaffs_Object));
+		tn->beingCreated = 1;
+
 		tn->myDev = dev;
-		tn->chunkId = -1;
+		tn->hdrChunk = 0;
 		tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
-		INIT_LIST_HEAD(&(tn->hardLinks));
-		INIT_LIST_HEAD(&(tn->hashLink));
-		INIT_LIST_HEAD(&tn->siblings);
+		YINIT_LIST_HEAD(&(tn->hardLinks));
+		YINIT_LIST_HEAD(&(tn->hashLink));
+		YINIT_LIST_HEAD(&tn->siblings);
+
+
+		/* Now make the directory sane */
+		if (dev->rootDir) {
+			tn->parent = dev->rootDir;
+			ylist_add(&(tn->siblings), &dev->rootDir->variant.directoryVariant.children);
+		}
 
 		/* Add it to the lost and found directory.
 		 * NB Can't put root or lostNFound in lostNFound so
 		 * check if lostNFound exists first
 		 */
-		if (dev->lostNFoundDir) {
+		if (dev->lostNFoundDir)
 			yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
-		}
+
+		tn->beingCreated = 0;
 	}
 
+	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
 	return tn;
 }
 
-static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device * dev, int number,
+static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device *dev, int number,
 					       __u32 mode)
 {
 
 	yaffs_Object *obj =
 	    yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
 	if (obj) {
-		obj->fake = 1;		/* it is fake so it has no NAND presence... */
+		obj->fake = 1;		/* it is fake so it might have no NAND presence... */
 		obj->renameAllowed = 0;	/* ... and we're not allowed to rename it... */
 		obj->unlinkAllowed = 0;	/* ... or unlink it */
 		obj->deleted = 0;
 		obj->unlinked = 0;
 		obj->yst_mode = mode;
 		obj->myDev = dev;
-		obj->chunkId = 0;	/* Not a valid chunk. */
+		obj->hdrChunk = 0;	/* Not a valid chunk. */
 	}
 
 	return obj;
 
 }
 
-static void yaffs_UnhashObject(yaffs_Object * tn)
+static void yaffs_UnhashObject(yaffs_Object *tn)
 {
 	int bucket;
 	yaffs_Device *dev = tn->myDev;
 
 	/* If it is still linked into the bucket list, free from the list */
-	if (!list_empty(&tn->hashLink)) {
-		list_del_init(&tn->hashLink);
+	if (!ylist_empty(&tn->hashLink)) {
+		ylist_del_init(&tn->hashLink);
 		bucket = yaffs_HashFunction(tn->objectId);
 		dev->objectBucket[bucket].count--;
 	}
-
 }
 
 /*  FreeObject frees up a Object and puts it back on the free list */
-static void yaffs_FreeObject(yaffs_Object * tn)
+static void yaffs_FreeObject(yaffs_Object *tn)
 {
-
 	yaffs_Device *dev = tn->myDev;
 
-#ifdef  __KERNEL__
+#ifdef __KERNEL__
+	T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), tn, tn->myInode));
+#endif
+
+	if (tn->parent)
+		YBUG();
+	if (!ylist_empty(&tn->siblings))
+		YBUG();
+
+
+#ifdef __KERNEL__
 	if (tn->myInode) {
 		/* We're still hooked up to a cached inode.
 		 * Don't delete now, but mark for later deletion
@@ -1963,24 +2000,28 @@ static void yaffs_FreeObject(yaffs_Objec
 
 	yaffs_UnhashObject(tn);
 
+#ifdef VALGRIND_TEST
+	YFREE(tn);
+#else
 	/* Link into the free list. */
-	tn->siblings.next = (struct list_head *)(dev->freeObjects);
+	tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
 	dev->freeObjects = tn;
 	dev->nFreeObjects++;
+#endif
+	dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
 }
 
 #ifdef __KERNEL__
 
-void yaffs_HandleDeferedFree(yaffs_Object * obj)
+void yaffs_HandleDeferedFree(yaffs_Object *obj)
 {
-	if (obj->deferedFree) {
+	if (obj->deferedFree)
 		yaffs_FreeObject(obj);
-	}
 }
 
 #endif
 
-static void yaffs_DeinitialiseObjects(yaffs_Device * dev)
+static void yaffs_DeinitialiseObjects(yaffs_Device *dev)
 {
 	/* Free the list of allocated Objects */
 
@@ -1998,7 +2039,7 @@ static void yaffs_DeinitialiseObjects(ya
 	dev->nFreeObjects = 0;
 }
 
-static void yaffs_InitialiseObjects(yaffs_Device * dev)
+static void yaffs_InitialiseObjects(yaffs_Device *dev)
 {
 	int i;
 
@@ -2007,15 +2048,14 @@ static void yaffs_InitialiseObjects(yaff
 	dev->nFreeObjects = 0;
 
 	for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
-		INIT_LIST_HEAD(&dev->objectBucket[i].list);
+		YINIT_LIST_HEAD(&dev->objectBucket[i].list);
 		dev->objectBucket[i].count = 0;
 	}
-
 }
 
-static int yaffs_FindNiceObjectBucket(yaffs_Device * dev)
+static int yaffs_FindNiceObjectBucket(yaffs_Device *dev)
 {
-	static int x = 0;
+	static int x;
 	int i;
 	int l = 999;
 	int lowest = 999999;
@@ -2049,7 +2089,7 @@ static int yaffs_FindNiceObjectBucket(ya
 	return l;
 }
 
-static int yaffs_CreateNewObjectNumber(yaffs_Device * dev)
+static int yaffs_CreateNewObjectNumber(yaffs_Device *dev)
 {
 	int bucket = yaffs_FindNiceObjectBucket(dev);
 
@@ -2058,7 +2098,7 @@ static int yaffs_CreateNewObjectNumber(y
 	 */
 
 	int found = 0;
-	struct list_head *i;
+	struct ylist_head *i;
 
 	__u32 n = (__u32) bucket;
 
@@ -2068,41 +2108,38 @@ static int yaffs_CreateNewObjectNumber(y
 		found = 1;
 		n += YAFFS_NOBJECT_BUCKETS;
 		if (1 || dev->objectBucket[bucket].count > 0) {
-			list_for_each(i, &dev->objectBucket[bucket].list) {
+			ylist_for_each(i, &dev->objectBucket[bucket].list) {
 				/* If there is already one in the list */
-				if (i
-				    && list_entry(i, yaffs_Object,
-						  hashLink)->objectId == n) {
+				if (i && ylist_entry(i, yaffs_Object,
+						hashLink)->objectId == n) {
 					found = 0;
 				}
 			}
 		}
 	}
 
-
 	return n;
 }
 
-static void yaffs_HashObject(yaffs_Object * in)
+static void yaffs_HashObject(yaffs_Object *in)
 {
 	int bucket = yaffs_HashFunction(in->objectId);
 	yaffs_Device *dev = in->myDev;
 
-	list_add(&in->hashLink, &dev->objectBucket[bucket].list);
+	ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
 	dev->objectBucket[bucket].count++;
-
 }
 
-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
+yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number)
 {
 	int bucket = yaffs_HashFunction(number);
-	struct list_head *i;
+	struct ylist_head *i;
 	yaffs_Object *in;
 
-	list_for_each(i, &dev->objectBucket[bucket].list) {
+	ylist_for_each(i, &dev->objectBucket[bucket].list) {
 		/* Look if it is in the list */
 		if (i) {
-			in = list_entry(i, yaffs_Object, hashLink);
+			in = ylist_entry(i, yaffs_Object, hashLink);
 			if (in->objectId == number) {
 #ifdef __KERNEL__
 				/* Don't tell the VFS about this one if it is defered free */
@@ -2118,31 +2155,27 @@ yaffs_Object *yaffs_FindObjectByNumber(y
 	return NULL;
 }
 
-yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
+yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev, int number,
 				    yaffs_ObjectType type)
 {
-
 	yaffs_Object *theObject;
-	yaffs_Tnode *tn;
+	yaffs_Tnode *tn = NULL;
 
-	if (number < 0) {
+	if (number < 0)
 		number = yaffs_CreateNewObjectNumber(dev);
-	}
 
 	theObject = yaffs_AllocateEmptyObject(dev);
-	if(!theObject)
+	if (!theObject)
 		return NULL;
 
-	if(type == YAFFS_OBJECT_TYPE_FILE){
+	if (type == YAFFS_OBJECT_TYPE_FILE) {
 		tn = yaffs_GetTnode(dev);
-		if(!tn){
+		if (!tn) {
 			yaffs_FreeObject(theObject);
 			return NULL;
 		}
 	}
 
-
-
 	if (theObject) {
 		theObject->fake = 0;
 		theObject->renameAllowed = 1;
@@ -2171,8 +2204,8 @@ yaffs_Object *yaffs_CreateNewObject(yaff
 			theObject->variant.fileVariant.top = tn;
 			break;
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
-			INIT_LIST_HEAD(&theObject->variant.directoryVariant.
-				       children);
+			YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+					children);
 			break;
 		case YAFFS_OBJECT_TYPE_SYMLINK:
 		case YAFFS_OBJECT_TYPE_HARDLINK:
@@ -2188,32 +2221,30 @@ yaffs_Object *yaffs_CreateNewObject(yaff
 	return theObject;
 }
 
-static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev,
+static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device *dev,
 						      int number,
 						      yaffs_ObjectType type)
 {
 	yaffs_Object *theObject = NULL;
 
-	if (number > 0) {
+	if (number > 0)
 		theObject = yaffs_FindObjectByNumber(dev, number);
-	}
 
-	if (!theObject) {
+	if (!theObject)
 		theObject = yaffs_CreateNewObject(dev, number, type);
-	}
 
 	return theObject;
 
 }
 
 
-static YCHAR *yaffs_CloneString(const YCHAR * str)
+static YCHAR *yaffs_CloneString(const YCHAR *str)
 {
 	YCHAR *newStr = NULL;
 
 	if (str && *str) {
 		newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
-		if(newStr)
+		if (newStr)
 			yaffs_strcpy(newStr, str);
 	}
 
@@ -2229,29 +2260,31 @@ static YCHAR *yaffs_CloneString(const YC
  */
 
 static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
-				       yaffs_Object * parent,
-				       const YCHAR * name,
+				       yaffs_Object *parent,
+				       const YCHAR *name,
 				       __u32 mode,
 				       __u32 uid,
 				       __u32 gid,
-				       yaffs_Object * equivalentObject,
-				       const YCHAR * aliasString, __u32 rdev)
+				       yaffs_Object *equivalentObject,
+				       const YCHAR *aliasString, __u32 rdev)
 {
 	yaffs_Object *in;
-	YCHAR *str;
+	YCHAR *str = NULL;
 
 	yaffs_Device *dev = parent->myDev;
 
 	/* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
-	if (yaffs_FindObjectByName(parent, name)) {
+	if (yaffs_FindObjectByName(parent, name))
 		return NULL;
-	}
 
 	in = yaffs_CreateNewObject(dev, -1, type);
 
-	if(type == YAFFS_OBJECT_TYPE_SYMLINK){
+	if (!in)
+		return YAFFS_FAIL;
+
+	if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
 		str = yaffs_CloneString(aliasString);
-		if(!str){
+		if (!str) {
 			yaffs_FreeObject(in);
 			return NULL;
 		}
@@ -2260,7 +2293,7 @@ static yaffs_Object *yaffs_MknodObject(y
 
 
 	if (in) {
-		in->chunkId = -1;
+		in->hdrChunk = 0;
 		in->valid = 1;
 		in->variantType = type;
 
@@ -2293,10 +2326,10 @@ static yaffs_Object *yaffs_MknodObject(y
 			break;
 		case YAFFS_OBJECT_TYPE_HARDLINK:
 			in->variant.hardLinkVariant.equivalentObject =
-			    equivalentObject;
+				equivalentObject;
 			in->variant.hardLinkVariant.equivalentObjectId =
-			    equivalentObject->objectId;
-			list_add(&in->hardLinks, &equivalentObject->hardLinks);
+				equivalentObject->objectId;
+			ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
 			break;
 		case YAFFS_OBJECT_TYPE_FILE:
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
@@ -2308,7 +2341,7 @@ static yaffs_Object *yaffs_MknodObject(y
 
 		if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
 			/* Could not create the object header, fail the creation */
-			yaffs_DestroyObject(in);
+			yaffs_DeleteObject(in);
 			in = NULL;
 		}
 
@@ -2317,38 +2350,38 @@ static yaffs_Object *yaffs_MknodObject(y
 	return in;
 }
 
-yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
-			      __u32 mode, __u32 uid, __u32 gid)
+yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
+			__u32 mode, __u32 uid, __u32 gid)
 {
 	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
-				 uid, gid, NULL, NULL, 0);
+				uid, gid, NULL, NULL, 0);
 }
 
-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
-				   __u32 mode, __u32 uid, __u32 gid)
+yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
+				__u32 mode, __u32 uid, __u32 gid)
 {
 	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
 				 mode, uid, gid, NULL, NULL, 0);
 }
 
-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
-				 __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
+yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
+				__u32 mode, __u32 uid, __u32 gid, __u32 rdev)
 {
 	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
 				 uid, gid, NULL, NULL, rdev);
 }
 
-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
-				 __u32 mode, __u32 uid, __u32 gid,
-				 const YCHAR * alias)
+yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
+				__u32 mode, __u32 uid, __u32 gid,
+				const YCHAR *alias)
 {
 	return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
-				 uid, gid, NULL, alias, 0);
+				uid, gid, NULL, alias, 0);
 }
 
 /* yaffs_Link returns the object id of the equivalent object.*/
-yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
-			 yaffs_Object * equivalentObject)
+yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
+			yaffs_Object *equivalentObject)
 {
 	/* Get the real object in case we were fed a hard link as an equivalent object */
 	equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
@@ -2363,33 +2396,31 @@ yaffs_Object *yaffs_Link(yaffs_Object *
 
 }
 
-static int yaffs_ChangeObjectName(yaffs_Object * obj, yaffs_Object * newDir,
-				  const YCHAR * newName, int force, int shadows)
+static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir,
+				const YCHAR *newName, int force, int shadows)
 {
 	int unlinkOp;
 	int deleteOp;
 
 	yaffs_Object *existingTarget;
 
-	if (newDir == NULL) {
+	if (newDir == NULL)
 		newDir = obj->parent;	/* use the old directory */
-	}
 
 	if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("tragendy: yaffs_ChangeObjectName: newDir is not a directory"
+		   ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
 		    TENDSTR)));
 		YBUG();
 	}
 
 	/* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
-	if (obj->myDev->isYaffs2) {
+	if (obj->myDev->isYaffs2)
 		unlinkOp = (newDir == obj->myDev->unlinkedDir);
-	} else {
+	else
 		unlinkOp = (newDir == obj->myDev->unlinkedDir
 			    && obj->variantType == YAFFS_OBJECT_TYPE_FILE);
-	}
 
 	deleteOp = (newDir == obj->myDev->deletedDir);
 
@@ -2415,40 +2446,40 @@ static int yaffs_ChangeObjectName(yaffs_
 			obj->unlinked = 1;
 
 		/* If it is a deletion then we mark it as a shrink for gc purposes. */
-		if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows)>= 0)
+		if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows) >= 0)
 			return YAFFS_OK;
 	}
 
 	return YAFFS_FAIL;
 }
 
-int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
-		       yaffs_Object * newDir, const YCHAR * newName)
+int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
+		yaffs_Object *newDir, const YCHAR *newName)
 {
-	yaffs_Object *obj;
-	yaffs_Object *existingTarget;
+	yaffs_Object *obj = NULL;
+	yaffs_Object *existingTarget = NULL;
 	int force = 0;
 
+
+	if (!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+		YBUG();
+	if (!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
+		YBUG();
+
 #ifdef CONFIG_YAFFS_CASE_INSENSITIVE
 	/* Special case for case insemsitive systems (eg. WinCE).
 	 * While look-up is case insensitive, the name isn't.
 	 * Therefore we might want to change x.txt to X.txt
 	*/
-	if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) {
+	if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0)
 		force = 1;
-	}
 #endif
 
+	else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
+		/* ENAMETOOLONG */
+		return YAFFS_FAIL;
+
 	obj = yaffs_FindObjectByName(oldDir, oldName);
-	/* Check new name to long. */
-	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK &&
-	    yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH)
-	  /* ENAMETOOLONG */
-	  return YAFFS_FAIL;
-	else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK &&
-		 yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
-	  /* ENAMETOOLONG */
-	  return YAFFS_FAIL;
 
 	if (obj && obj->renameAllowed) {
 
@@ -2456,8 +2487,8 @@ int yaffs_RenameObject(yaffs_Object * ol
 
 		existingTarget = yaffs_FindObjectByName(newDir, newName);
 		if (existingTarget &&
-		    existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
-		    !list_empty(&existingTarget->variant.directoryVariant.children)) {
+			existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+			!ylist_empty(&existingTarget->variant.directoryVariant.children)) {
 			/* There is a target that is a non-empty directory, so we fail */
 			return YAFFS_FAIL;	/* EEXIST or ENOTEMPTY */
 		} else if (existingTarget && existingTarget != obj) {
@@ -2465,7 +2496,7 @@ int yaffs_RenameObject(yaffs_Object * ol
 			 * but only if it isn't the same object
 			 */
 			yaffs_ChangeObjectName(obj, newDir, newName, force,
-					       existingTarget->objectId);
+						existingTarget->objectId);
 			yaffs_UnlinkObject(existingTarget);
 		}
 
@@ -2476,7 +2507,7 @@ int yaffs_RenameObject(yaffs_Object * ol
 
 /*------------------------- Block Management and Page Allocation ----------------*/
 
-static int yaffs_InitialiseBlocks(yaffs_Device * dev)
+static int yaffs_InitialiseBlocks(yaffs_Device *dev)
 {
 	int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
 
@@ -2487,23 +2518,20 @@ static int yaffs_InitialiseBlocks(yaffs_
 
 	/* If the first allocation strategy fails, thry the alternate one */
 	dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
-	if(!dev->blockInfo){
+	if (!dev->blockInfo) {
 		dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
 		dev->blockInfoAlt = 1;
-	}
-	else
+	} else
 		dev->blockInfoAlt = 0;
 
-	if(dev->blockInfo){
-
+	if (dev->blockInfo) {
 		/* Set up dynamic blockinfo stuff. */
 		dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
 		dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
-		if(!dev->chunkBits){
+		if (!dev->chunkBits) {
 			dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
 			dev->chunkBitsAlt = 1;
-		}
-		else
+		} else
 			dev->chunkBitsAlt = 0;
 	}
 
@@ -2514,30 +2542,29 @@ static int yaffs_InitialiseBlocks(yaffs_
 	}
 
 	return YAFFS_FAIL;
-
 }
 
-static void yaffs_DeinitialiseBlocks(yaffs_Device * dev)
+static void yaffs_DeinitialiseBlocks(yaffs_Device *dev)
 {
-	if(dev->blockInfoAlt && dev->blockInfo)
+	if (dev->blockInfoAlt && dev->blockInfo)
 		YFREE_ALT(dev->blockInfo);
-	else if(dev->blockInfo)
+	else if (dev->blockInfo)
 		YFREE(dev->blockInfo);
 
 	dev->blockInfoAlt = 0;
 
 	dev->blockInfo = NULL;
 
-	if(dev->chunkBitsAlt && dev->chunkBits)
+	if (dev->chunkBitsAlt && dev->chunkBits)
 		YFREE_ALT(dev->chunkBits);
-	else if(dev->chunkBits)
+	else if (dev->chunkBits)
 		YFREE(dev->chunkBits);
 	dev->chunkBitsAlt = 0;
 	dev->chunkBits = NULL;
 }
 
-static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device * dev,
-					    yaffs_BlockInfo * bi)
+static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev,
+					yaffs_BlockInfo *bi)
 {
 	int i;
 	__u32 seq;
@@ -2556,7 +2583,7 @@ static int yaffs_BlockNotDisqualifiedFro
 		seq = dev->sequenceNumber;
 
 		for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
-		     i++) {
+				i++) {
 			b = yaffs_GetBlockInfo(dev, i);
 			if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
 			    (b->pagesInUse - b->softDeletions) <
@@ -2571,38 +2598,36 @@ static int yaffs_BlockNotDisqualifiedFro
 	 * discarded pages.
 	 */
 	return (bi->sequenceNumber <= dev->oldestDirtySequence);
-
 }
 
 /* FindDiretiestBlock is used to select the dirtiest block (or close enough)
  * for garbage collection.
  */
 
-static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev,
-					       int aggressive)
+static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,
+					int aggressive)
 {
-
 	int b = dev->currentDirtyChecker;
 
 	int i;
 	int iterations;
 	int dirtiest = -1;
 	int pagesInUse = 0;
-	int prioritised=0;
+	int prioritised = 0;
 	yaffs_BlockInfo *bi;
 	int pendingPrioritisedExist = 0;
 
 	/* First let's see if we need to grab a prioritised block */
-	if(dev->hasPendingPrioritisedGCs){
-		for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
+	if (dev->hasPendingPrioritisedGCs) {
+		for (i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++) {
 
 			bi = yaffs_GetBlockInfo(dev, i);
-			//yaffs_VerifyBlock(dev,bi,i);
+			/* yaffs_VerifyBlock(dev,bi,i); */
 
-			if(bi->gcPrioritise) {
+			if (bi->gcPrioritise) {
 				pendingPrioritisedExist = 1;
-				if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
-				   yaffs_BlockNotDisqualifiedFromGC(dev, bi)){
+				if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+				   yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
 					pagesInUse = (bi->pagesInUse - bi->softDeletions);
 					dirtiest = i;
 					prioritised = 1;
@@ -2611,7 +2636,7 @@ static int yaffs_FindBlockForGarbageColl
 			}
 		}
 
-		if(!pendingPrioritisedExist) /* None found, so we can clear this */
+		if (!pendingPrioritisedExist) /* None found, so we can clear this */
 			dev->hasPendingPrioritisedGCs = 0;
 	}
 
@@ -2623,31 +2648,28 @@ static int yaffs_FindBlockForGarbageColl
 
 	dev->nonAggressiveSkip--;
 
-	if (!aggressive && (dev->nonAggressiveSkip > 0)) {
+	if (!aggressive && (dev->nonAggressiveSkip > 0))
 		return -1;
-	}
 
-	if(!prioritised)
+	if (!prioritised)
 		pagesInUse =
-	    		(aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
+			(aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
 
-	if (aggressive) {
+	if (aggressive)
 		iterations =
 		    dev->internalEndBlock - dev->internalStartBlock + 1;
-	} else {
+	else {
 		iterations =
 		    dev->internalEndBlock - dev->internalStartBlock + 1;
 		iterations = iterations / 16;
-		if (iterations > 200) {
+		if (iterations > 200)
 			iterations = 200;
-		}
 	}
 
 	for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
 		b++;
-		if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
+		if (b < dev->internalStartBlock || b > dev->internalEndBlock)
 			b = dev->internalStartBlock;
-		}
 
 		if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
 			T(YAFFS_TRACE_ERROR,
@@ -2657,17 +2679,9 @@ static int yaffs_FindBlockForGarbageColl
 
 		bi = yaffs_GetBlockInfo(dev, b);
 
-#if 0
-		if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
-			dirtiest = b;
-			pagesInUse = 0;
-		}
-		else
-#endif
-
 		if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
-		       (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
-		        yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
+			(bi->pagesInUse - bi->softDeletions) < pagesInUse &&
+				yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
 			dirtiest = b;
 			pagesInUse = (bi->pagesInUse - bi->softDeletions);
 		}
@@ -2678,19 +2692,18 @@ static int yaffs_FindBlockForGarbageColl
 	if (dirtiest > 0) {
 		T(YAFFS_TRACE_GC,
 		  (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
-		   dev->nChunksPerBlock - pagesInUse,prioritised));
+		   dev->nChunksPerBlock - pagesInUse, prioritised));
 	}
 
 	dev->oldestDirtySequence = 0;
 
-	if (dirtiest > 0) {
+	if (dirtiest > 0)
 		dev->nonAggressiveSkip = 4;
-	}
 
 	return dirtiest;
 }
 
-static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo)
+static void yaffs_BlockBecameDirty(yaffs_Device *dev, int blockNo)
 {
 	yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
 
@@ -2752,7 +2765,7 @@ static void yaffs_BlockBecameDirty(yaffs
 	}
 }
 
-static int yaffs_FindBlockForAllocation(yaffs_Device * dev)
+static int yaffs_FindBlockForAllocation(yaffs_Device *dev)
 {
 	int i;
 
@@ -2763,7 +2776,7 @@ static int yaffs_FindBlockForAllocation(
 		 * Can't get space to gc
 		 */
 		T(YAFFS_TRACE_ERROR,
-		  (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR)));
+		  (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
 
 		return -1;
 	}
@@ -2794,31 +2807,74 @@ static int yaffs_FindBlockForAllocation(
 
 	T(YAFFS_TRACE_ALWAYS,
 	  (TSTR
-	   ("yaffs tragedy: no more eraased blocks, but there should have been %d"
+	   ("yaffs tragedy: no more erased blocks, but there should have been %d"
 	    TENDSTR), dev->nErasedBlocks));
 
 	return -1;
 }
 
 
-// Check if there's space to allocate...
-// Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
-static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev)
+
+static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
+{
+	if (!dev->nCheckpointBlocksRequired &&
+	   dev->isYaffs2) {
+		/* Not a valid value so recalculate */
+		int nBytes = 0;
+		int nBlocks;
+		int devBlocks = (dev->endBlock - dev->startBlock + 1);
+		int tnodeSize;
+
+		tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
+		if (tnodeSize < sizeof(yaffs_Tnode))
+			tnodeSize = sizeof(yaffs_Tnode);
+
+		nBytes += sizeof(yaffs_CheckpointValidity);
+		nBytes += sizeof(yaffs_CheckpointDevice);
+		nBytes += devBlocks * sizeof(yaffs_BlockInfo);
+		nBytes += devBlocks * dev->chunkBitmapStride;
+		nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
+		nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
+		nBytes += sizeof(yaffs_CheckpointValidity);
+		nBytes += sizeof(__u32); /* checksum*/
+
+		/* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
+
+		nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
+
+		dev->nCheckpointBlocksRequired = nBlocks;
+	}
+
+	return dev->nCheckpointBlocksRequired;
+}
+
+/*
+ * Check if there's space to allocate...
+ * Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+ */
+static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev)
 {
 	int reservedChunks;
 	int reservedBlocks = dev->nReservedBlocks;
 	int checkpointBlocks;
 
-	checkpointBlocks =  dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
-	if(checkpointBlocks < 0)
+	if (dev->isYaffs2) {
+		checkpointBlocks =  yaffs_CalcCheckpointBlocksRequired(dev) -
+				    dev->blocksInCheckpoint;
+		if (checkpointBlocks < 0)
+			checkpointBlocks = 0;
+	} else {
 		checkpointBlocks = 0;
+	}
 
 	reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
 
 	return (dev->nFreeChunks > reservedChunks);
 }
 
-static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr)
+static int yaffs_AllocateChunk(yaffs_Device *dev, int useReserve,
+		yaffs_BlockInfo **blockUsedPtr)
 {
 	int retVal;
 	yaffs_BlockInfo *bi;
@@ -2835,7 +2891,7 @@ static int yaffs_AllocateChunk(yaffs_Dev
 	}
 
 	if (dev->nErasedBlocks < dev->nReservedBlocks
-	    && dev->allocationPage == 0) {
+			&& dev->allocationPage == 0) {
 		T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
 	}
 
@@ -2844,10 +2900,10 @@ static int yaffs_AllocateChunk(yaffs_Dev
 		bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
 
 		retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
-		    dev->allocationPage;
+			dev->allocationPage;
 		bi->pagesInUse++;
 		yaffs_SetChunkBit(dev, dev->allocationBlock,
-				  dev->allocationPage);
+				dev->allocationPage);
 
 		dev->allocationPage++;
 
@@ -2859,43 +2915,43 @@ static int yaffs_AllocateChunk(yaffs_Dev
 			dev->allocationBlock = -1;
 		}
 
-		if(blockUsedPtr)
+		if (blockUsedPtr)
 			*blockUsedPtr = bi;
 
 		return retVal;
 	}
 
 	T(YAFFS_TRACE_ERROR,
-	  (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+			(TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
 
 	return -1;
 }
 
-static int yaffs_GetErasedChunks(yaffs_Device * dev)
+static int yaffs_GetErasedChunks(yaffs_Device *dev)
 {
 	int n;
 
 	n = dev->nErasedBlocks * dev->nChunksPerBlock;
 
-	if (dev->allocationBlock > 0) {
+	if (dev->allocationBlock > 0)
 		n += (dev->nChunksPerBlock - dev->allocationPage);
-	}
 
 	return n;
 
 }
 
-static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block)
+static int yaffs_GarbageCollectBlock(yaffs_Device *dev, int block,
+		int wholeBlock)
 {
 	int oldChunk;
 	int newChunk;
-	int chunkInBlock;
 	int markNAND;
 	int retVal = YAFFS_OK;
 	int cleanups = 0;
 	int i;
 	int isCheckpointBlock;
 	int matchingChunk;
+	int maxCopies;
 
 	int chunksBefore = yaffs_GetErasedChunks(dev);
 	int chunksAfter;
@@ -2911,8 +2967,11 @@ static int yaffs_GarbageCollectBlock(yaf
 	bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
 
 	T(YAFFS_TRACE_TRACING,
-	  (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block,
-	   bi->pagesInUse, bi->hasShrinkHeader));
+			(TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
+			 block,
+			 bi->pagesInUse,
+			 bi->hasShrinkHeader,
+			 wholeBlock));
 
 	/*yaffs_VerifyFreeChunks(dev); */
 
@@ -2926,26 +2985,33 @@ static int yaffs_GarbageCollectBlock(yaf
 	dev->isDoingGC = 1;
 
 	if (isCheckpointBlock ||
-	    !yaffs_StillSomeChunkBits(dev, block)) {
+			!yaffs_StillSomeChunkBits(dev, block)) {
 		T(YAFFS_TRACE_TRACING,
-		  (TSTR
-		   ("Collecting block %d that has no chunks in use" TENDSTR),
-		   block));
+				(TSTR
+				 ("Collecting block %d that has no chunks in use" TENDSTR),
+				 block));
 		yaffs_BlockBecameDirty(dev, block);
 	} else {
 
 		__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
 
-		yaffs_VerifyBlock(dev,bi,block);
+		yaffs_VerifyBlock(dev, bi, block);
 
-		for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
-		     chunkInBlock < dev->nChunksPerBlock
-		     && yaffs_StillSomeChunkBits(dev, block);
-		     chunkInBlock++, oldChunk++) {
-			if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) {
+		maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10;
+		oldChunk = block * dev->nChunksPerBlock + dev->gcChunk;
+
+		for (/* init already done */;
+		     retVal == YAFFS_OK &&
+		     dev->gcChunk < dev->nChunksPerBlock &&
+		     (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) &&
+		     maxCopies > 0;
+		     dev->gcChunk++, oldChunk++) {
+			if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
 
 				/* This page is in use and might need to be copied off */
 
+				maxCopies--;
+
 				markNAND = 1;
 
 				yaffs_InitialiseTags(&tags);
@@ -2959,22 +3025,22 @@ static int yaffs_GarbageCollectBlock(yaf
 
 				T(YAFFS_TRACE_GC_DETAIL,
 				  (TSTR
-				   ("Collecting page %d, %d %d %d " TENDSTR),
-				   chunkInBlock, tags.objectId, tags.chunkId,
+				   ("Collecting chunk in block %d, %d %d %d " TENDSTR),
+				   dev->gcChunk, tags.objectId, tags.chunkId,
 				   tags.byteCount));
 
-				if(object && !yaffs_SkipVerification(dev)){
-					if(tags.chunkId == 0)
-						matchingChunk = object->chunkId;
-					else if(object->softDeleted)
+				if (object && !yaffs_SkipVerification(dev)) {
+					if (tags.chunkId == 0)
+						matchingChunk = object->hdrChunk;
+					else if (object->softDeleted)
 						matchingChunk = oldChunk; /* Defeat the test */
 					else
-						matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL);
+						matchingChunk = yaffs_FindChunkInFile(object, tags.chunkId, NULL);
 
-					if(oldChunk != matchingChunk)
+					if (oldChunk != matchingChunk)
 						T(YAFFS_TRACE_ERROR,
 						  (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
-						  oldChunk,matchingChunk,tags.objectId, tags.chunkId));
+						  oldChunk, matchingChunk, tags.objectId, tags.chunkId));
 
 				}
 
@@ -2986,9 +3052,11 @@ static int yaffs_GarbageCollectBlock(yaf
 					    tags.objectId, tags.chunkId, tags.byteCount));
 				}
 
-				if (object && object->deleted
-				    && tags.chunkId != 0) {
-					/* Data chunk in a deleted file, throw it away
+				if (object &&
+				    object->deleted &&
+				    object->softDeleted &&
+				    tags.chunkId != 0) {
+					/* Data chunk in a soft deleted file, throw it away
 					 * It's a soft deleted data chunk,
 					 * No need to copy this, just forget about it and
 					 * fix up the object.
@@ -3003,13 +3071,12 @@ static int yaffs_GarbageCollectBlock(yaf
 						cleanups++;
 					}
 					markNAND = 0;
-				} else if (0
-					   /* Todo object && object->deleted && object->nDataChunks == 0 */
-					   ) {
+				} else if (0) {
+					/* Todo object && object->deleted && object->nDataChunks == 0 */
 					/* Deleted object header with no data chunks.
 					 * Can be discarded and the file deleted.
 					 */
-					object->chunkId = 0;
+					object->hdrChunk = 0;
 					yaffs_FreeTnode(object->myDev,
 							object->variant.
 							fileVariant.top);
@@ -3031,17 +3098,14 @@ static int yaffs_GarbageCollectBlock(yaf
 						 * We need to nuke the shrinkheader flags first
 						 * We no longer want the shrinkHeader flag since its work is done
 						 * and if it is left in place it will mess up scanning.
-						 * Also, clear out any shadowing stuff
 						 */
 
 						yaffs_ObjectHeader *oh;
 						oh = (yaffs_ObjectHeader *)buffer;
 						oh->isShrink = 0;
-						oh->shadowsObject = -1;
-						tags.extraShadows = 0;
 						tags.extraIsShrinkHeader = 0;
 
-						yaffs_VerifyObjectHeader(object,oh,&tags,1);
+						yaffs_VerifyObjectHeader(object, oh, &tags, 1);
 					}
 
 					newChunk =
@@ -3055,7 +3119,7 @@ static int yaffs_GarbageCollectBlock(yaf
 
 						if (tags.chunkId == 0) {
 							/* It's a header */
-							object->chunkId =  newChunk;
+							object->hdrChunk =  newChunk;
 							object->serial =   tags.serialNumber;
 						} else {
 							/* It's a data chunk */
@@ -3067,7 +3131,8 @@ static int yaffs_GarbageCollectBlock(yaf
 					}
 				}
 
-				yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+				if (retVal == YAFFS_OK)
+					yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
 
 			}
 		}
@@ -3098,18 +3163,25 @@ static int yaffs_GarbageCollectBlock(yaf
 
 	}
 
-	yaffs_VerifyCollectedBlock(dev,bi,block);
+	yaffs_VerifyCollectedBlock(dev, bi, block);
 
-	if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
+	chunksAfter = yaffs_GetErasedChunks(dev);
+	if (chunksBefore >= chunksAfter) {
 		T(YAFFS_TRACE_GC,
 		  (TSTR
 		   ("gc did not increase free chunks before %d after %d"
 		    TENDSTR), chunksBefore, chunksAfter));
 	}
 
+	/* If the gc completed then clear the current gcBlock so that we find another. */
+	if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING) {
+		dev->gcBlock = -1;
+		dev->gcChunk = 0;
+	}
+
 	dev->isDoingGC = 0;
 
-	return YAFFS_OK;
+	return retVal;
 }
 
 /* New garbage collector
@@ -3121,7 +3193,7 @@ static int yaffs_GarbageCollectBlock(yaf
  * The idea is to help clear out space in a more spread-out manner.
  * Dunno if it really does anything useful.
  */
-static int yaffs_CheckGarbageCollection(yaffs_Device * dev)
+static int yaffs_CheckGarbageCollection(yaffs_Device *dev)
 {
 	int block;
 	int aggressive;
@@ -3142,8 +3214,8 @@ static int yaffs_CheckGarbageCollection(
 	do {
 		maxTries++;
 
-		checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
-		if(checkpointBlockAdjust < 0)
+		checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+		if (checkpointBlockAdjust < 0)
 			checkpointBlockAdjust = 0;
 
 		if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) {
@@ -3154,20 +3226,24 @@ static int yaffs_CheckGarbageCollection(
 			aggressive = 0;
 		}
 
-		block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+		if (dev->gcBlock <= 0) {
+			dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
+			dev->gcChunk = 0;
+		}
+
+		block = dev->gcBlock;
 
 		if (block > 0) {
 			dev->garbageCollections++;
-			if (!aggressive) {
+			if (!aggressive)
 				dev->passiveGarbageCollections++;
-			}
 
 			T(YAFFS_TRACE_GC,
 			  (TSTR
 			   ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
 			   dev->nErasedBlocks, aggressive));
 
-			gcOk = yaffs_GarbageCollectBlock(dev, block);
+			gcOk = yaffs_GarbageCollectBlock(dev, block, aggressive);
 		}
 
 		if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
@@ -3176,15 +3252,16 @@ static int yaffs_CheckGarbageCollection(
 			   ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
 			    TENDSTR), dev->nErasedBlocks, maxTries, block));
 		}
-	} while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
-		 && (maxTries < 2));
+	} while ((dev->nErasedBlocks < dev->nReservedBlocks) &&
+		 (block > 0) &&
+		 (maxTries < 2));
 
 	return aggressive ? gcOk : YAFFS_OK;
 }
 
 /*-------------------------  TAGS --------------------------------*/
 
-static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
+static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId,
 			   int chunkInObject)
 {
 	return (tags->chunkId == chunkInObject &&
@@ -3195,8 +3272,8 @@ static int yaffs_TagsMatch(const yaffs_E
 
 /*-------------------- Data file manipulation -----------------*/
 
-static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
-				 yaffs_ExtendedTags * tags)
+static int yaffs_FindChunkInFile(yaffs_Object *in, int chunkInInode,
+				 yaffs_ExtendedTags *tags)
 {
 	/*Get the Tnode, then get the level 0 offset chunk offset */
 	yaffs_Tnode *tn;
@@ -3214,7 +3291,7 @@ static int yaffs_FindChunkInFile(yaffs_O
 	tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
 
 	if (tn) {
-		theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+		theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
 
 		retVal =
 		    yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
@@ -3223,8 +3300,8 @@ static int yaffs_FindChunkInFile(yaffs_O
 	return retVal;
 }
 
-static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode,
-					  yaffs_ExtendedTags * tags)
+static int yaffs_FindAndDeleteChunkInFile(yaffs_Object *in, int chunkInInode,
+					  yaffs_ExtendedTags *tags)
 {
 	/* Get the Tnode, then get the level 0 offset chunk offset */
 	yaffs_Tnode *tn;
@@ -3243,29 +3320,23 @@ static int yaffs_FindAndDeleteChunkInFil
 
 	if (tn) {
 
-		theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+		theChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
 
 		retVal =
 		    yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
 					   chunkInInode);
 
 		/* Delete the entry in the filestructure (if found) */
-		if (retVal != -1) {
-			yaffs_PutLevel0Tnode(dev,tn,chunkInInode,0);
-		}
-	} else {
-		/*T(("No level 0 found for %d\n", chunkInInode)); */
+		if (retVal != -1)
+			yaffs_PutLevel0Tnode(dev, tn, chunkInInode, 0);
 	}
 
-	if (retVal == -1) {
-		/* T(("Could not find %d to delete\n",chunkInInode)); */
-	}
 	return retVal;
 }
 
 #ifdef YAFFS_PARANOID
 
-static int yaffs_CheckFileSanity(yaffs_Object * in)
+static int yaffs_CheckFileSanity(yaffs_Object *in)
 {
 	int chunk;
 	int nChunks;
@@ -3278,10 +3349,8 @@ static int yaffs_CheckFileSanity(yaffs_O
 	int theChunk;
 	int chunkDeleted;
 
-	if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
-		/* T(("Object not a file\n")); */
+	if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
 		return YAFFS_FAIL;
-	}
 
 	objId = in->objectId;
 	fSize = in->variant.fileVariant.fileSize;
@@ -3294,7 +3363,7 @@ static int yaffs_CheckFileSanity(yaffs_O
 
 		if (tn) {
 
-			theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk);
+			theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk);
 
 			if (yaffs_CheckChunkBits
 			    (dev, theChunk / dev->nChunksPerBlock,
@@ -3323,7 +3392,7 @@ static int yaffs_CheckFileSanity(yaffs_O
 
 #endif
 
-static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
+static int yaffs_PutChunkIntoFile(yaffs_Object *in, int chunkInInode,
 				  int chunkInNAND, int inScan)
 {
 	/* NB inScan is zero unless scanning.
@@ -3358,11 +3427,10 @@ static int yaffs_PutChunkIntoFile(yaffs_
 					&in->variant.fileVariant,
 					chunkInInode,
 					NULL);
-	if (!tn) {
+	if (!tn)
 		return YAFFS_FAIL;
-	}
 
-	existingChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
+	existingChunk = yaffs_GetChunkGroupBase(dev, tn, chunkInInode);
 
 	if (inScan != 0) {
 		/* If we're scanning then we need to test for duplicates
@@ -3374,7 +3442,7 @@ static int yaffs_PutChunkIntoFile(yaffs_
 		 * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
 		 */
 
-		if (existingChunk != 0) {
+		if (existingChunk > 0) {
 			/* NB Right now existing chunk will not be real chunkId if the device >= 32MB
 			 *    thus we have to do a FindChunkInFile to get the real chunk id.
 			 *
@@ -3411,8 +3479,10 @@ static int yaffs_PutChunkIntoFile(yaffs_
 			 * not be loaded during a scan
 			 */
 
-			newSerial = newTags.serialNumber;
-			existingSerial = existingTags.serialNumber;
+			if (inScan > 0) {
+				newSerial = newTags.serialNumber;
+				existingSerial = existingTags.serialNumber;
+			}
 
 			if ((inScan > 0) &&
 			    (in->myDev->isYaffs2 ||
@@ -3437,24 +3507,23 @@ static int yaffs_PutChunkIntoFile(yaffs_
 
 	}
 
-	if (existingChunk == 0) {
+	if (existingChunk == 0)
 		in->nDataChunks++;
-	}
 
-	yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND);
+	yaffs_PutLevel0Tnode(dev, tn, chunkInInode, chunkInNAND);
 
 	return YAFFS_OK;
 }
 
-static int yaffs_ReadChunkDataFromObject(yaffs_Object * in, int chunkInInode,
-					 __u8 * buffer)
+static int yaffs_ReadChunkDataFromObject(yaffs_Object *in, int chunkInInode,
+					__u8 *buffer)
 {
 	int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
 
-	if (chunkInNAND >= 0) {
+	if (chunkInNAND >= 0)
 		return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
-						       buffer,NULL);
-	} else {
+						buffer, NULL);
+	else {
 		T(YAFFS_TRACE_NANDACCESS,
 		  (TSTR("Chunk %d not found zero instead" TENDSTR),
 		   chunkInNAND));
@@ -3465,7 +3534,7 @@ static int yaffs_ReadChunkDataFromObject
 
 }
 
-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn)
+void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn)
 {
 	int block;
 	int page;
@@ -3475,16 +3544,15 @@ void yaffs_DeleteChunk(yaffs_Device * de
 	if (chunkId <= 0)
 		return;
 
-
 	dev->nDeletions++;
 	block = chunkId / dev->nChunksPerBlock;
 	page = chunkId % dev->nChunksPerBlock;
 
 
-	if(!yaffs_CheckChunkBit(dev,block,page))
+	if (!yaffs_CheckChunkBit(dev, block, page))
 		T(YAFFS_TRACE_VERIFY,
-		 	(TSTR("Deleting invalid chunk %d"TENDSTR),
-		 	 chunkId));
+			(TSTR("Deleting invalid chunk %d"TENDSTR),
+			 chunkId));
 
 	bi = yaffs_GetBlockInfo(dev, block);
 
@@ -3524,14 +3592,12 @@ void yaffs_DeleteChunk(yaffs_Device * de
 			yaffs_BlockBecameDirty(dev, block);
 		}
 
-	} else {
-		/* T(("Bad news deleting chunk %d\n",chunkId)); */
 	}
 
 }
 
-static int yaffs_WriteChunkDataToObject(yaffs_Object * in, int chunkInInode,
-					const __u8 * buffer, int nBytes,
+static int yaffs_WriteChunkDataToObject(yaffs_Object *in, int chunkInInode,
+					const __u8 *buffer, int nBytes,
 					int useReserve)
 {
 	/* Find old chunk Need to do this to get serial number
@@ -3561,6 +3627,12 @@ static int yaffs_WriteChunkDataToObject(
 	    (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
 	newTags.byteCount = nBytes;
 
+	if (nBytes < 1 || nBytes > dev->totalBytesPerChunk) {
+		T(YAFFS_TRACE_ERROR,
+		(TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
+		YBUG();
+	}
+
 	newChunkId =
 	    yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
 					      useReserve);
@@ -3568,11 +3640,9 @@ static int yaffs_WriteChunkDataToObject(
 	if (newChunkId >= 0) {
 		yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
 
-		if (prevChunkId >= 0) {
+		if (prevChunkId >= 0)
 			yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
 
-		}
-
 		yaffs_CheckFileSanity(in);
 	}
 	return newChunkId;
@@ -3582,7 +3652,7 @@ static int yaffs_WriteChunkDataToObject(
 /* UpdateObjectHeader updates the header on NAND for an object.
  * If name is not NULL, then that new name is used.
  */
-int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, int force,
+int yaffs_UpdateObjectHeader(yaffs_Object *in, const YCHAR *name, int force,
 			     int isShrink, int shadows)
 {
 
@@ -3603,9 +3673,12 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 
 	yaffs_ObjectHeader *oh = NULL;
 
-	yaffs_strcpy(oldName,"silly old name");
+	yaffs_strcpy(oldName, _Y("silly old name"));
 
-	if (!in->fake || force) {
+
+	if (!in->fake ||
+		in == dev->rootDir || /* The rootDir should also be saved */
+		force) {
 
 		yaffs_CheckGarbageCollection(dev);
 		yaffs_CheckObjectDetailsLoaded(in);
@@ -3613,13 +3686,13 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 		buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
 		oh = (yaffs_ObjectHeader *) buffer;
 
-		prevChunkId = in->chunkId;
+		prevChunkId = in->hdrChunk;
 
-		if (prevChunkId >= 0) {
+		if (prevChunkId > 0) {
 			result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
 							buffer, &oldTags);
 
-			yaffs_VerifyObjectHeader(in,oh,&oldTags,0);
+			yaffs_VerifyObjectHeader(in, oh, &oldTags, 0);
 
 			memcpy(oldName, oh->name, sizeof(oh->name));
 		}
@@ -3628,7 +3701,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 
 		oh->type = in->variantType;
 		oh->yst_mode = in->yst_mode;
-		oh->shadowsObject = shadows;
+		oh->shadowsObject = oh->inbandShadowsObject = shadows;
 
 #ifdef CONFIG_YAFFS_WINCE
 		oh->win_atime[0] = in->win_atime[0];
@@ -3645,20 +3718,18 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 		oh->yst_ctime = in->yst_ctime;
 		oh->yst_rdev = in->yst_rdev;
 #endif
-		if (in->parent) {
+		if (in->parent)
 			oh->parentObjectId = in->parent->objectId;
-		} else {
+		else
 			oh->parentObjectId = 0;
-		}
 
 		if (name && *name) {
 			memset(oh->name, 0, sizeof(oh->name));
 			yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
-		} else if (prevChunkId>=0) {
+		} else if (prevChunkId >= 0)
 			memcpy(oh->name, oldName, sizeof(oh->name));
-		} else {
+		else
 			memset(oh->name, 0, sizeof(oh->name));
-		}
 
 		oh->isShrink = isShrink;
 
@@ -3708,7 +3779,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 		newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
 		newTags.extraObjectType = in->variantType;
 
-		yaffs_VerifyObjectHeader(in,oh,&newTags,1);
+		yaffs_VerifyObjectHeader(in, oh, &newTags, 1);
 
 		/* Create new chunk in NAND */
 		newChunkId =
@@ -3717,20 +3788,20 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
 
 		if (newChunkId >= 0) {
 
-			in->chunkId = newChunkId;
+			in->hdrChunk = newChunkId;
 
 			if (prevChunkId >= 0) {
 				yaffs_DeleteChunk(dev, prevChunkId, 1,
 						  __LINE__);
 			}
 
-			if(!yaffs_ObjectHasCachedWriteData(in))
+			if (!yaffs_ObjectHasCachedWriteData(in))
 				in->dirty = 0;
 
 			/* If this was a shrink, then mark the block that the chunk lives on */
 			if (isShrink) {
 				bi = yaffs_GetBlockInfo(in->myDev,
-							newChunkId /in->myDev->	nChunksPerBlock);
+					newChunkId / in->myDev->nChunksPerBlock);
 				bi->hasShrinkHeader = 1;
 			}
 
@@ -3766,7 +3837,7 @@ static int yaffs_ObjectHasCachedWriteDat
 	yaffs_ChunkCache *cache;
 	int nCaches = obj->myDev->nShortOpCaches;
 
-	for(i = 0; i < nCaches; i++){
+	for (i = 0; i < nCaches; i++) {
 		cache = &dev->srCache[i];
 		if (cache->object == obj &&
 		    cache->dirty)
@@ -3777,7 +3848,7 @@ static int yaffs_ObjectHasCachedWriteDat
 }
 
 
-static void yaffs_FlushFilesChunkCache(yaffs_Object * obj)
+static void yaffs_FlushFilesChunkCache(yaffs_Object *obj)
 {
 	yaffs_Device *dev = obj->myDev;
 	int lowest = -99;	/* Stop compiler whining. */
@@ -3844,16 +3915,16 @@ void yaffs_FlushEntireDeviceCache(yaffs_
 	 */
 	do {
 		obj = NULL;
-		for( i = 0; i < nCaches && !obj; i++) {
+		for (i = 0; i < nCaches && !obj; i++) {
 			if (dev->srCache[i].object &&
 			    dev->srCache[i].dirty)
 				obj = dev->srCache[i].object;
 
 		}
-		if(obj)
+		if (obj)
 			yaffs_FlushFilesChunkCache(obj);
 
-	} while(obj);
+	} while (obj);
 
 }
 
@@ -3863,41 +3934,21 @@ void yaffs_FlushEntireDeviceCache(yaffs_
  * Then look for the least recently used non-dirty one.
  * Then look for the least recently used dirty one...., flush and look again.
  */
-static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev)
+static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device *dev)
 {
 	int i;
-	int usage;
-	int theOne;
 
 	if (dev->nShortOpCaches > 0) {
 		for (i = 0; i < dev->nShortOpCaches; i++) {
 			if (!dev->srCache[i].object)
 				return &dev->srCache[i];
 		}
+	}
 
-		return NULL;
+	return NULL;
+}
 
-		theOne = -1;
-		usage = 0;	/* just to stop the compiler grizzling */
-
-		for (i = 0; i < dev->nShortOpCaches; i++) {
-			if (!dev->srCache[i].dirty &&
-			    ((dev->srCache[i].lastUse < usage && theOne >= 0) ||
-			     theOne < 0)) {
-				usage = dev->srCache[i].lastUse;
-				theOne = i;
-			}
-		}
-
-
-		return theOne >= 0 ? &dev->srCache[theOne] : NULL;
-	} else {
-		return NULL;
-	}
-
-}
-
-static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev)
+static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev)
 {
 	yaffs_ChunkCache *cache;
 	yaffs_Object *theObj;
@@ -3927,8 +3978,7 @@ static yaffs_ChunkCache *yaffs_GrabChunk
 			for (i = 0; i < dev->nShortOpCaches; i++) {
 				if (dev->srCache[i].object &&
 				    !dev->srCache[i].locked &&
-				    (dev->srCache[i].lastUse < usage || !cache))
-				{
+				    (dev->srCache[i].lastUse < usage || !cache)) {
 					usage = dev->srCache[i].lastUse;
 					theObj = dev->srCache[i].object;
 					cache = &dev->srCache[i];
@@ -3950,7 +4000,7 @@ static yaffs_ChunkCache *yaffs_GrabChunk
 }
 
 /* Find a cached chunk */
-static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object * obj,
+static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj,
 					      int chunkId)
 {
 	yaffs_Device *dev = obj->myDev;
@@ -3969,7 +4019,7 @@ static yaffs_ChunkCache *yaffs_FindChunk
 }
 
 /* Mark the chunk for the least recently used algorithym */
-static void yaffs_UseChunkCache(yaffs_Device * dev, yaffs_ChunkCache * cache,
+static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache,
 				int isAWrite)
 {
 
@@ -3977,9 +4027,9 @@ static void yaffs_UseChunkCache(yaffs_De
 		if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
 			/* Reset the cache usages */
 			int i;
-			for (i = 1; i < dev->nShortOpCaches; i++) {
+			for (i = 1; i < dev->nShortOpCaches; i++)
 				dev->srCache[i].lastUse = 0;
-			}
+
 			dev->srLastUse = 0;
 		}
 
@@ -3987,9 +4037,8 @@ static void yaffs_UseChunkCache(yaffs_De
 
 		cache->lastUse = dev->srLastUse;
 
-		if (isAWrite) {
+		if (isAWrite)
 			cache->dirty = 1;
-		}
 	}
 }
 
@@ -3997,21 +4046,20 @@ static void yaffs_UseChunkCache(yaffs_De
  * Do this when a whole page gets written,
  * ie the short cache for this page is no longer valid.
  */
-static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId)
+static void yaffs_InvalidateChunkCache(yaffs_Object *object, int chunkId)
 {
 	if (object->myDev->nShortOpCaches > 0) {
 		yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
 
-		if (cache) {
+		if (cache)
 			cache->object = NULL;
-		}
 	}
 }
 
 /* Invalidate all the cache pages associated with this object
  * Do this whenever ther file is deleted or resized.
  */
-static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in)
+static void yaffs_InvalidateWholeChunkCache(yaffs_Object *in)
 {
 	int i;
 	yaffs_Device *dev = in->myDev;
@@ -4019,9 +4067,8 @@ static void yaffs_InvalidateWholeChunkCa
 	if (dev->nShortOpCaches > 0) {
 		/* Invalidate it. */
 		for (i = 0; i < dev->nShortOpCaches; i++) {
-			if (dev->srCache[i].object == in) {
+			if (dev->srCache[i].object == in)
 				dev->srCache[i].object = NULL;
-			}
 		}
 	}
 }
@@ -4029,18 +4076,18 @@ static void yaffs_InvalidateWholeChunkCa
 /*--------------------- Checkpointing --------------------*/
 
 
-static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
+static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev, int head)
 {
 	yaffs_CheckpointValidity cp;
 
-	memset(&cp,0,sizeof(cp));
+	memset(&cp, 0, sizeof(cp));
 
 	cp.structType = sizeof(cp);
 	cp.magic = YAFFS_MAGIC;
 	cp.version = YAFFS_CHECKPOINT_VERSION;
 	cp.head = (head) ? 1 : 0;
 
-	return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
+	return (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
 		1 : 0;
 }
 
@@ -4049,9 +4096,9 @@ static int yaffs_ReadCheckpointValidityM
 	yaffs_CheckpointValidity cp;
 	int ok;
 
-	ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+	ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
 
-	if(ok)
+	if (ok)
 		ok = (cp.structType == sizeof(cp)) &&
 		     (cp.magic == YAFFS_MAGIC) &&
 		     (cp.version == YAFFS_CHECKPOINT_VERSION) &&
@@ -4100,21 +4147,21 @@ static int yaffs_WriteCheckpointDevice(y
 	int ok;
 
 	/* Write device runtime values*/
-	yaffs_DeviceToCheckpointDevice(&cp,dev);
+	yaffs_DeviceToCheckpointDevice(&cp, dev);
 	cp.structType = sizeof(cp);
 
-	ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+	ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
 
 	/* Write block info */
-	if(ok) {
+	if (ok) {
 		nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-		ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
+		ok = (yaffs_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes);
 	}
 
 	/* Write chunk bits */
-	if(ok) {
+	if (ok) {
 		nBytes = nBlocks * dev->chunkBitmapStride;
-		ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
+		ok = (yaffs_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes);
 	}
 	return	 ok ? 1 : 0;
 
@@ -4128,25 +4175,25 @@ static int yaffs_ReadCheckpointDevice(ya
 
 	int ok;
 
-	ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
-	if(!ok)
+	ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+	if (!ok)
 		return 0;
 
-	if(cp.structType != sizeof(cp))
+	if (cp.structType != sizeof(cp))
 		return 0;
 
 
-	yaffs_CheckpointDeviceToDevice(dev,&cp);
+	yaffs_CheckpointDeviceToDevice(dev, &cp);
 
 	nBytes = nBlocks * sizeof(yaffs_BlockInfo);
 
-	ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
+	ok = (yaffs_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes);
 
-	if(!ok)
+	if (!ok)
 		return 0;
 	nBytes = nBlocks * dev->chunkBitmapStride;
 
-	ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
+	ok = (yaffs_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes);
 
 	return ok ? 1 : 0;
 }
@@ -4157,7 +4204,7 @@ static void yaffs_ObjectToCheckpointObje
 
 	cp->objectId = obj->objectId;
 	cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
-	cp->chunkId = obj->chunkId;
+	cp->hdrChunk = obj->hdrChunk;
 	cp->variantType = obj->variantType;
 	cp->deleted = obj->deleted;
 	cp->softDeleted = obj->softDeleted;
@@ -4168,20 +4215,28 @@ static void yaffs_ObjectToCheckpointObje
 	cp->serial = obj->serial;
 	cp->nDataChunks = obj->nDataChunks;
 
-	if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
 		cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
-	else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+	else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
 		cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
 }
 
-static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp)
+static int yaffs_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp)
 {
 
 	yaffs_Object *parent;
 
+	if (obj->variantType != cp->variantType) {
+		T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
+			TCONT("chunk %d does not match existing object type %d")
+			TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk,
+			obj->variantType));
+		return 0;
+	}
+
 	obj->objectId = cp->objectId;
 
-	if(cp->parentId)
+	if (cp->parentId)
 		parent = yaffs_FindOrCreateObjectByNumber(
 					obj->myDev,
 					cp->parentId,
@@ -4189,10 +4244,19 @@ static void yaffs_CheckpointObjectToObje
 	else
 		parent = NULL;
 
-	if(parent)
+	if (parent) {
+		if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+			T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
+				TCONT(" chunk %d Parent type, %d, not directory")
+				TENDSTR),
+				cp->objectId, cp->parentId, cp->variantType,
+				cp->hdrChunk, parent->variantType));
+			return 0;
+		}
 		yaffs_AddObjectToDirectory(parent, obj);
+	}
 
-	obj->chunkId = cp->chunkId;
+	obj->hdrChunk = cp->hdrChunk;
 	obj->variantType = cp->variantType;
 	obj->deleted = cp->deleted;
 	obj->softDeleted = cp->softDeleted;
@@ -4203,29 +4267,34 @@ static void yaffs_CheckpointObjectToObje
 	obj->serial = cp->serial;
 	obj->nDataChunks = cp->nDataChunks;
 
-	if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
 		obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
-	else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+	else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
 		obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
 
-	if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
+	if (obj->hdrChunk > 0)
 		obj->lazyLoaded = 1;
+	return 1;
 }
 
 
 
-static int yaffs_CheckpointTnodeWorker(yaffs_Object * in, yaffs_Tnode * tn,
-				  	__u32 level, int chunkOffset)
+static int yaffs_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn,
+					__u32 level, int chunkOffset)
 {
 	int i;
 	yaffs_Device *dev = in->myDev;
 	int ok = 1;
-	int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
+	if (tnodeSize < sizeof(yaffs_Tnode))
+		tnodeSize = sizeof(yaffs_Tnode);
+
 
 	if (tn) {
 		if (level > 0) {
 
-			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
+			for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
 				if (tn->internal[i]) {
 					ok = yaffs_CheckpointTnodeWorker(in,
 							tn->internal[i],
@@ -4235,10 +4304,9 @@ static int yaffs_CheckpointTnodeWorker(y
 			}
 		} else if (level == 0) {
 			__u32 baseOffset = chunkOffset <<  YAFFS_TNODES_LEVEL0_BITS;
-			/* printf("write tnode at %d\n",baseOffset); */
-			ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset));
-			if(ok)
-				ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes);
+			ok = (yaffs_CheckpointWrite(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
+			if (ok)
+				ok = (yaffs_CheckpointWrite(dev, tn, tnodeSize) == tnodeSize);
 		}
 	}
 
@@ -4251,13 +4319,13 @@ static int yaffs_WriteCheckpointTnodes(y
 	__u32 endMarker = ~0;
 	int ok = 1;
 
-	if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
 		ok = yaffs_CheckpointTnodeWorker(obj,
 					    obj->variant.fileVariant.top,
 					    obj->variant.fileVariant.topLevel,
 					    0);
-		if(ok)
-			ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
+		if (ok)
+			ok = (yaffs_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) ==
 				sizeof(endMarker));
 	}
 
@@ -4272,38 +4340,38 @@ static int yaffs_ReadCheckpointTnodes(ya
 	yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
 	yaffs_Tnode *tn;
 	int nread = 0;
+	int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
 
-	ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
+	if (tnodeSize < sizeof(yaffs_Tnode))
+		tnodeSize = sizeof(yaffs_Tnode);
 
-	while(ok && (~baseChunk)){
+	ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
+
+	while (ok && (~baseChunk)) {
 		nread++;
 		/* Read level 0 tnode */
 
 
-		/* printf("read  tnode at %d\n",baseChunk); */
 		tn = yaffs_GetTnodeRaw(dev);
-		if(tn)
-			ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) ==
-			      (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
+		if (tn)
+			ok = (yaffs_CheckpointRead(dev, tn, tnodeSize) == tnodeSize);
 		else
 			ok = 0;
 
-		if(tn && ok){
+		if (tn && ok)
 			ok = yaffs_AddOrFindLevel0Tnode(dev,
-					       		fileStructPtr,
-					       		baseChunk,
-					       		tn) ? 1 : 0;
+							fileStructPtr,
+							baseChunk,
+							tn) ? 1 : 0;
 
-		}
-
-		if(ok)
-			ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
+		if (ok)
+			ok = (yaffs_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
 
 	}
 
-	T(YAFFS_TRACE_CHECKPOINT,(
+	T(YAFFS_TRACE_CHECKPOINT, (
 		TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
-		nread,baseChunk,ok));
+		nread, baseChunk, ok));
 
 	return ok ? 1 : 0;
 }
@@ -4315,41 +4383,40 @@ static int yaffs_WriteCheckpointObjects(
 	yaffs_CheckpointObject cp;
 	int i;
 	int ok = 1;
-	struct list_head *lh;
+	struct ylist_head *lh;
 
 
 	/* Iterate through the objects in each hash entry,
 	 * dumping them to the checkpointing stream.
 	 */
 
-	 for(i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++){
-	 	list_for_each(lh, &dev->objectBucket[i].list) {
+	for (i = 0; ok &&  i <  YAFFS_NOBJECT_BUCKETS; i++) {
+		ylist_for_each(lh, &dev->objectBucket[i].list) {
 			if (lh) {
-				obj = list_entry(lh, yaffs_Object, hashLink);
+				obj = ylist_entry(lh, yaffs_Object, hashLink);
 				if (!obj->deferedFree) {
-					yaffs_ObjectToCheckpointObject(&cp,obj);
+					yaffs_ObjectToCheckpointObject(&cp, obj);
 					cp.structType = sizeof(cp);
 
-					T(YAFFS_TRACE_CHECKPOINT,(
+					T(YAFFS_TRACE_CHECKPOINT, (
 						TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
-						cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
+						cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, (unsigned) obj));
 
-					ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+					ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
 
-					if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+					if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE)
 						ok = yaffs_WriteCheckpointTnodes(obj);
-					}
 				}
 			}
 		}
-	 }
+	}
 
-	 /* Dump end of list */
-	memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
+	/* Dump end of list */
+	memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject));
 	cp.structType = sizeof(cp);
 
-	if(ok)
-		ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+	if (ok)
+		ok = (yaffs_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp));
 
 	return ok ? 1 : 0;
 }
@@ -4362,38 +4429,39 @@ static int yaffs_ReadCheckpointObjects(y
 	int done = 0;
 	yaffs_Object *hardList = NULL;
 
-	while(ok && !done) {
-		ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
-		if(cp.structType != sizeof(cp)) {
-			T(YAFFS_TRACE_CHECKPOINT,(TSTR("struct size %d instead of %d ok %d"TENDSTR),
-				cp.structType,sizeof(cp),ok));
+	while (ok && !done) {
+		ok = (yaffs_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp));
+		if (cp.structType != sizeof(cp)) {
+			T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
+				cp.structType, sizeof(cp), ok));
 			ok = 0;
 		}
 
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
-			cp.objectId,cp.parentId,cp.variantType,cp.chunkId));
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
+			cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk));
 
-		if(ok && cp.objectId == ~0)
+		if (ok && cp.objectId == ~0)
 			done = 1;
-		else if(ok){
-			obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType);
-			if(obj) {
-				yaffs_CheckpointObjectToObject(obj,&cp);
-				if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+		else if (ok) {
+			obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType);
+			if (obj) {
+				ok = yaffs_CheckpointObjectToObject(obj, &cp);
+				if (!ok)
+					break;
+				if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
 					ok = yaffs_ReadCheckpointTnodes(obj);
-				} else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+				} else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
 					obj->hardLinks.next =
-						    (struct list_head *)
-						    hardList;
+						(struct ylist_head *) hardList;
 					hardList = obj;
 				}
-
-			}
+			} else
+				ok = 0;
 		}
 	}
 
-	if(ok)
-		yaffs_HardlinkFixup(dev,hardList);
+	if (ok)
+		yaffs_HardlinkFixup(dev, hardList);
 
 	return ok ? 1 : 0;
 }
@@ -4403,11 +4471,11 @@ static int yaffs_WriteCheckpointSum(yaff
 	__u32 checkpointSum;
 	int ok;
 
-	yaffs_GetCheckpointSum(dev,&checkpointSum);
+	yaffs_GetCheckpointSum(dev, &checkpointSum);
 
-	ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum));
+	ok = (yaffs_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum));
 
-	if(!ok)
+	if (!ok)
 		return 0;
 
 	return 1;
@@ -4419,14 +4487,14 @@ static int yaffs_ReadCheckpointSum(yaffs
 	__u32 checkpointSum1;
 	int ok;
 
-	yaffs_GetCheckpointSum(dev,&checkpointSum0);
+	yaffs_GetCheckpointSum(dev, &checkpointSum0);
 
-	ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1));
+	ok = (yaffs_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1));
 
-	if(!ok)
+	if (!ok)
 		return 0;
 
-	if(checkpointSum0 != checkpointSum1)
+	if (checkpointSum0 != checkpointSum1)
 		return 0;
 
 	return 1;
@@ -4435,46 +4503,43 @@ static int yaffs_ReadCheckpointSum(yaffs
 
 static int yaffs_WriteCheckpointData(yaffs_Device *dev)
 {
-
 	int ok = 1;
 
-	if(dev->skipCheckpointWrite || !dev->isYaffs2){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR)));
+	if (dev->skipCheckpointWrite || !dev->isYaffs2) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
 		ok = 0;
 	}
 
-	if(ok)
-		ok = yaffs_CheckpointOpen(dev,1);
+	if (ok)
+		ok = yaffs_CheckpointOpen(dev, 1);
 
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
-		ok = yaffs_WriteCheckpointValidityMarker(dev,1);
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+		ok = yaffs_WriteCheckpointValidityMarker(dev, 1);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint device" TENDSTR)));
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
 		ok = yaffs_WriteCheckpointDevice(dev);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint objects" TENDSTR)));
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
 		ok = yaffs_WriteCheckpointObjects(dev);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
-		ok = yaffs_WriteCheckpointValidityMarker(dev,0);
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+		ok = yaffs_WriteCheckpointValidityMarker(dev, 0);
 	}
 
-	if(ok){
+	if (ok)
 		ok = yaffs_WriteCheckpointSum(dev);
-	}
-
 
-	if(!yaffs_CheckpointClose(dev))
-		 ok = 0;
+	if (!yaffs_CheckpointClose(dev))
+		ok = 0;
 
-	if(ok)
-	    	dev->isCheckpointed = 1;
-	 else
-	 	dev->isCheckpointed = 0;
+	if (ok)
+		dev->isCheckpointed = 1;
+	else
+		dev->isCheckpointed = 0;
 
 	return dev->isCheckpointed;
 }
@@ -4483,43 +4548,43 @@ static int yaffs_ReadCheckpointData(yaff
 {
 	int ok = 1;
 
-	if(dev->skipCheckpointRead || !dev->isYaffs2){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR)));
+	if (dev->skipCheckpointRead || !dev->isYaffs2) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
 		ok = 0;
 	}
 
-	if(ok)
-		ok = yaffs_CheckpointOpen(dev,0); /* open for read */
+	if (ok)
+		ok = yaffs_CheckpointOpen(dev, 0); /* open for read */
 
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
-		ok = yaffs_ReadCheckpointValidityMarker(dev,1);
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+		ok = yaffs_ReadCheckpointValidityMarker(dev, 1);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint device" TENDSTR)));
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
 		ok = yaffs_ReadCheckpointDevice(dev);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
 		ok = yaffs_ReadCheckpointObjects(dev);
 	}
-	if(ok){
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
-		ok = yaffs_ReadCheckpointValidityMarker(dev,0);
+	if (ok) {
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
+		ok = yaffs_ReadCheckpointValidityMarker(dev, 0);
 	}
 
-	if(ok){
+	if (ok) {
 		ok = yaffs_ReadCheckpointSum(dev);
-		T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok));
+		T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
 	}
 
-	if(!yaffs_CheckpointClose(dev))
+	if (!yaffs_CheckpointClose(dev))
 		ok = 0;
 
-	if(ok)
-	    	dev->isCheckpointed = 1;
-	 else
-	 	dev->isCheckpointed = 0;
+	if (ok)
+		dev->isCheckpointed = 1;
+	else
+		dev->isCheckpointed = 0;
 
 	return ok ? 1 : 0;
 
@@ -4527,11 +4592,11 @@ static int yaffs_ReadCheckpointData(yaff
 
 static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
 {
-	if(dev->isCheckpointed ||
-	   dev->blocksInCheckpoint > 0){
+	if (dev->isCheckpointed ||
+			dev->blocksInCheckpoint > 0) {
 		dev->isCheckpointed = 0;
 		yaffs_CheckpointInvalidateStream(dev);
-		if(dev->superBlock && dev->markSuperBlockDirty)
+		if (dev->superBlock && dev->markSuperBlockDirty)
 			dev->markSuperBlockDirty(dev->superBlock);
 	}
 }
@@ -4540,18 +4605,18 @@ static void yaffs_InvalidateCheckpoint(y
 int yaffs_CheckpointSave(yaffs_Device *dev)
 {
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
 
 	yaffs_VerifyObjects(dev);
 	yaffs_VerifyBlocks(dev);
 	yaffs_VerifyFreeChunks(dev);
 
-	if(!dev->isCheckpointed) {
+	if (!dev->isCheckpointed) {
 		yaffs_InvalidateCheckpoint(dev);
 		yaffs_WriteCheckpointData(dev);
 	}
 
-	T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+	T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
 
 	return dev->isCheckpointed;
 }
@@ -4559,17 +4624,17 @@ int yaffs_CheckpointSave(yaffs_Device *d
 int yaffs_CheckpointRestore(yaffs_Device *dev)
 {
 	int retval;
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
 
 	retval = yaffs_ReadCheckpointData(dev);
 
-	if(dev->isCheckpointed){
+	if (dev->isCheckpointed) {
 		yaffs_VerifyObjects(dev);
 		yaffs_VerifyBlocks(dev);
 		yaffs_VerifyFreeChunks(dev);
 	}
 
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed));
 
 	return retval;
 }
@@ -4584,12 +4649,12 @@ int yaffs_CheckpointRestore(yaffs_Device
  * Curve-balls: the first chunk might also be the last chunk.
  */
 
-int yaffs_ReadDataFromFile(yaffs_Object * in, __u8 * buffer, loff_t offset,
-			   int nBytes)
+int yaffs_ReadDataFromFile(yaffs_Object *in, __u8 *buffer, loff_t offset,
+			int nBytes)
 {
 
 	int chunk;
-	int start;
+	__u32 start;
 	int nToCopy;
 	int n = nBytes;
 	int nDone = 0;
@@ -4600,27 +4665,26 @@ int yaffs_ReadDataFromFile(yaffs_Object
 	dev = in->myDev;
 
 	while (n > 0) {
-		//chunk = offset / dev->nDataBytesPerChunk + 1;
-		//start = offset % dev->nDataBytesPerChunk;
-		yaffs_AddrToChunk(dev,offset,&chunk,&start);
+		/* chunk = offset / dev->nDataBytesPerChunk + 1; */
+		/* start = offset % dev->nDataBytesPerChunk; */
+		yaffs_AddrToChunk(dev, offset, &chunk, &start);
 		chunk++;
 
 		/* OK now check for the curveball where the start and end are in
 		 * the same chunk.
 		 */
-		if ((start + n) < dev->nDataBytesPerChunk) {
+		if ((start + n) < dev->nDataBytesPerChunk)
 			nToCopy = n;
-		} else {
+		else
 			nToCopy = dev->nDataBytesPerChunk - start;
-		}
 
 		cache = yaffs_FindChunkCache(in, chunk);
 
 		/* If the chunk is already in the cache or it is less than a whole chunk
-		 * then use the cache (if there is caching)
+		 * or we're using inband tags then use the cache (if there is caching)
 		 * else bypass the cache.
 		 */
-		if (cache || nToCopy != dev->nDataBytesPerChunk) {
+		if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
 			if (dev->nShortOpCaches > 0) {
 
 				/* If we can't find the data in the cache, then load it up. */
@@ -4641,14 +4705,9 @@ int yaffs_ReadDataFromFile(yaffs_Object
 
 				cache->locked = 1;
 
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_UnlockYAFFS(TRUE);
-#endif
+
 				memcpy(buffer, &cache->data[start], nToCopy);
 
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_LockYAFFS(TRUE);
-#endif
 				cache->locked = 0;
 			} else {
 				/* Read into the local buffer then copy..*/
@@ -4657,41 +4716,19 @@ int yaffs_ReadDataFromFile(yaffs_Object
 				    yaffs_GetTempBuffer(dev, __LINE__);
 				yaffs_ReadChunkDataFromObject(in, chunk,
 							      localBuffer);
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_UnlockYAFFS(TRUE);
-#endif
+
 				memcpy(buffer, &localBuffer[start], nToCopy);
 
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_LockYAFFS(TRUE);
-#endif
+
 				yaffs_ReleaseTempBuffer(dev, localBuffer,
 							__LINE__);
 			}
 
 		} else {
-#ifdef CONFIG_YAFFS_WINCE
-			__u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
-
-			/* Under WinCE can't do direct transfer. Need to use a local buffer.
-			 * This is because we otherwise screw up WinCE's memory mapper
-			 */
-			yaffs_ReadChunkDataFromObject(in, chunk, localBuffer);
-
-#ifdef CONFIG_YAFFS_WINCE
-			yfsd_UnlockYAFFS(TRUE);
-#endif
-			memcpy(buffer, localBuffer, dev->nDataBytesPerChunk);
 
-#ifdef CONFIG_YAFFS_WINCE
-			yfsd_LockYAFFS(TRUE);
-			yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
-#endif
-
-#else
 			/* A full chunk. Read directly into the supplied buffer. */
 			yaffs_ReadChunkDataFromObject(in, chunk, buffer);
-#endif
+
 		}
 
 		n -= nToCopy;
@@ -4704,28 +4741,37 @@ int yaffs_ReadDataFromFile(yaffs_Object
 	return nDone;
 }
 
-int yaffs_WriteDataToFile(yaffs_Object * in, const __u8 * buffer, loff_t offset,
-			  int nBytes, int writeThrough)
+int yaffs_WriteDataToFile(yaffs_Object *in, const __u8 *buffer, loff_t offset,
+			int nBytes, int writeThrough)
 {
 
 	int chunk;
-	int start;
+	__u32 start;
 	int nToCopy;
 	int n = nBytes;
 	int nDone = 0;
 	int nToWriteBack;
 	int startOfWrite = offset;
 	int chunkWritten = 0;
-	int nBytesRead;
+	__u32 nBytesRead;
+	__u32 chunkStart;
 
 	yaffs_Device *dev;
 
 	dev = in->myDev;
 
 	while (n > 0 && chunkWritten >= 0) {
-		//chunk = offset / dev->nDataBytesPerChunk + 1;
-		//start = offset % dev->nDataBytesPerChunk;
-		yaffs_AddrToChunk(dev,offset,&chunk,&start);
+		/* chunk = offset / dev->nDataBytesPerChunk + 1; */
+		/* start = offset % dev->nDataBytesPerChunk; */
+		yaffs_AddrToChunk(dev, offset, &chunk, &start);
+
+		if (chunk * dev->nDataBytesPerChunk + start != offset ||
+				start >= dev->nDataBytesPerChunk) {
+			T(YAFFS_TRACE_ERROR, (
+			   TSTR("AddrToChunk of offset %d gives chunk %d start %d"
+			   TENDSTR),
+			   (int)offset, chunk, start));
+		}
 		chunk++;
 
 		/* OK now check for the curveball where the start and end are in
@@ -4740,25 +4786,32 @@ int yaffs_WriteDataToFile(yaffs_Object *
 			 * we need to write back as much as was there before.
 			 */
 
-			nBytesRead =
-			    in->variant.fileVariant.fileSize -
-			    ((chunk - 1) * dev->nDataBytesPerChunk);
+			chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
+
+			if (chunkStart > in->variant.fileVariant.fileSize)
+				nBytesRead = 0; /* Past end of file */
+			else
+				nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
 
-			if (nBytesRead > dev->nDataBytesPerChunk) {
+			if (nBytesRead > dev->nDataBytesPerChunk)
 				nBytesRead = dev->nDataBytesPerChunk;
-			}
 
 			nToWriteBack =
 			    (nBytesRead >
 			     (start + n)) ? nBytesRead : (start + n);
 
+			if (nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
+				YBUG();
+
 		} else {
 			nToCopy = dev->nDataBytesPerChunk - start;
 			nToWriteBack = dev->nDataBytesPerChunk;
 		}
 
-		if (nToCopy != dev->nDataBytesPerChunk) {
-			/* An incomplete start or end chunk (or maybe both start and end chunk) */
+		if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+			/* An incomplete start or end chunk (or maybe both start and end chunk),
+			 * or we're using inband tags, so we want to use the cache buffers.
+			 */
 			if (dev->nShortOpCaches > 0) {
 				yaffs_ChunkCache *cache;
 				/* If we can't find the data in the cache, then load the cache */
@@ -4775,10 +4828,9 @@ int yaffs_WriteDataToFile(yaffs_Object *
 					yaffs_ReadChunkDataFromObject(in, chunk,
 								      cache->
 								      data);
-				}
-				else if(cache &&
-				        !cache->dirty &&
-					!yaffs_CheckSpaceForAllocation(in->myDev)){
+				} else if (cache &&
+					!cache->dirty &&
+					!yaffs_CheckSpaceForAllocation(in->myDev)) {
 					/* Drop the cache if it was a read cache item and
 					 * no space check has been made for it.
 					 */
@@ -4788,16 +4840,12 @@ int yaffs_WriteDataToFile(yaffs_Object *
 				if (cache) {
 					yaffs_UseChunkCache(dev, cache, 1);
 					cache->locked = 1;
-#ifdef CONFIG_YAFFS_WINCE
-					yfsd_UnlockYAFFS(TRUE);
-#endif
+
 
 					memcpy(&cache->data[start], buffer,
 					       nToCopy);
 
-#ifdef CONFIG_YAFFS_WINCE
-					yfsd_LockYAFFS(TRUE);
-#endif
+
 					cache->locked = 0;
 					cache->nBytes = nToWriteBack;
 
@@ -4825,15 +4873,10 @@ int yaffs_WriteDataToFile(yaffs_Object *
 				yaffs_ReadChunkDataFromObject(in, chunk,
 							      localBuffer);
 
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_UnlockYAFFS(TRUE);
-#endif
+
 
 				memcpy(&localBuffer[start], buffer, nToCopy);
 
-#ifdef CONFIG_YAFFS_WINCE
-				yfsd_LockYAFFS(TRUE);
-#endif
 				chunkWritten =
 				    yaffs_WriteChunkDataToObject(in, chunk,
 								 localBuffer,
@@ -4846,31 +4889,15 @@ int yaffs_WriteDataToFile(yaffs_Object *
 			}
 
 		} else {
-
-#ifdef CONFIG_YAFFS_WINCE
-			/* Under WinCE can't do direct transfer. Need to use a local buffer.
-			 * This is because we otherwise screw up WinCE's memory mapper
-			 */
-			__u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
-#ifdef CONFIG_YAFFS_WINCE
-			yfsd_UnlockYAFFS(TRUE);
-#endif
-			memcpy(localBuffer, buffer, dev->nDataBytesPerChunk);
-#ifdef CONFIG_YAFFS_WINCE
-			yfsd_LockYAFFS(TRUE);
-#endif
-			chunkWritten =
-			    yaffs_WriteChunkDataToObject(in, chunk, localBuffer,
-							 dev->nDataBytesPerChunk,
-							 0);
-			yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
-#else
 			/* A full chunk. Write directly from the supplied buffer. */
+
+
+
 			chunkWritten =
 			    yaffs_WriteChunkDataToObject(in, chunk, buffer,
 							 dev->nDataBytesPerChunk,
 							 0);
-#endif
+
 			/* Since we've overwritten the cached data, we better invalidate it. */
 			yaffs_InvalidateChunkCache(in, chunk);
 		}
@@ -4886,9 +4913,8 @@ int yaffs_WriteDataToFile(yaffs_Object *
 
 	/* Update file object */
 
-	if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) {
+	if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize)
 		in->variant.fileVariant.fileSize = (startOfWrite + nDone);
-	}
 
 	in->dirty = 1;
 
@@ -4898,7 +4924,7 @@ int yaffs_WriteDataToFile(yaffs_Object *
 
 /* ---------------------- File resizing stuff ------------------ */
 
-static void yaffs_PruneResizedChunks(yaffs_Object * in, int newSize)
+static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize)
 {
 
 	yaffs_Device *dev = in->myDev;
@@ -4939,11 +4965,11 @@ static void yaffs_PruneResizedChunks(yaf
 
 }
 
-int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize)
+int yaffs_ResizeFile(yaffs_Object *in, loff_t newSize)
 {
 
 	int oldFileSize = in->variant.fileVariant.fileSize;
-	int newSizeOfPartialChunk;
+	__u32 newSizeOfPartialChunk;
 	int newFullChunks;
 
 	yaffs_Device *dev = in->myDev;
@@ -4955,13 +4981,11 @@ int yaffs_ResizeFile(yaffs_Object * in,
 
 	yaffs_CheckGarbageCollection(dev);
 
-	if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
-		return yaffs_GetFileSize(in);
-	}
+	if (in->variantType != YAFFS_OBJECT_TYPE_FILE)
+		return YAFFS_FAIL;
 
-	if (newSize == oldFileSize) {
-		return oldFileSize;
-	}
+	if (newSize == oldFileSize)
+		return YAFFS_OK;
 
 	if (newSize < oldFileSize) {
 
@@ -4994,21 +5018,20 @@ int yaffs_ResizeFile(yaffs_Object * in,
 	}
 
 
-
 	/* Write a new object header.
 	 * show we've shrunk the file, if need be
 	 * Do this only if the file is not in the deleted directories.
 	 */
-	if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
-	    in->parent->objectId != YAFFS_OBJECTID_DELETED) {
+	if (in->parent &&
+	    in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+	    in->parent->objectId != YAFFS_OBJECTID_DELETED)
 		yaffs_UpdateObjectHeader(in, NULL, 0,
 					 (newSize < oldFileSize) ? 1 : 0, 0);
-	}
 
-	return newSize;
+	return YAFFS_OK;
 }
 
-loff_t yaffs_GetFileSize(yaffs_Object * obj)
+loff_t yaffs_GetFileSize(yaffs_Object *obj)
 {
 	obj = yaffs_GetEquivalentObject(obj);
 
@@ -5024,7 +5047,7 @@ loff_t yaffs_GetFileSize(yaffs_Object *
 
 
 
-int yaffs_FlushFile(yaffs_Object * in, int updateTime)
+int yaffs_FlushFile(yaffs_Object *in, int updateTime)
 {
 	int retVal;
 	if (in->dirty) {
@@ -5039,9 +5062,8 @@ int yaffs_FlushFile(yaffs_Object * in, i
 #endif
 		}
 
-		retVal =
-		    (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
-		     0) ? YAFFS_OK : YAFFS_FAIL;
+		retVal = (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
+			0) ? YAFFS_OK : YAFFS_FAIL;
 	} else {
 		retVal = YAFFS_OK;
 	}
@@ -5050,7 +5072,7 @@ int yaffs_FlushFile(yaffs_Object * in, i
 
 }
 
-static int yaffs_DoGenericObjectDeletion(yaffs_Object * in)
+static int yaffs_DoGenericObjectDeletion(yaffs_Object *in)
 {
 
 	/* First off, invalidate the file's data in the cache, without flushing. */
@@ -5058,13 +5080,13 @@ static int yaffs_DoGenericObjectDeletion
 
 	if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
 		/* Move to the unlinked directory so we have a record that it was deleted. */
-		yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0);
+		yaffs_ChangeObjectName(in, in->myDev->deletedDir, _Y("deleted"), 0, 0);
 
 	}
 
 	yaffs_RemoveObjectFromDirectory(in);
-	yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__);
-	in->chunkId = -1;
+	yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
+	in->hdrChunk = 0;
 
 	yaffs_FreeObject(in);
 	return YAFFS_OK;
@@ -5075,62 +5097,63 @@ static int yaffs_DoGenericObjectDeletion
  * and the inode associated with the file.
  * It does not delete the links associated with the file.
  */
-static int yaffs_UnlinkFile(yaffs_Object * in)
+static int yaffs_UnlinkFileIfNeeded(yaffs_Object *in)
 {
 
 	int retVal;
 	int immediateDeletion = 0;
 
-	if (1) {
 #ifdef __KERNEL__
-		if (!in->myInode) {
-			immediateDeletion = 1;
-
-		}
+	if (!in->myInode)
+		immediateDeletion = 1;
 #else
-		if (in->inUse <= 0) {
-			immediateDeletion = 1;
-
-		}
+	if (in->inUse <= 0)
+		immediateDeletion = 1;
 #endif
-		if (immediateDeletion) {
-			retVal =
-			    yaffs_ChangeObjectName(in, in->myDev->deletedDir,
-						   "deleted", 0, 0);
-			T(YAFFS_TRACE_TRACING,
-			  (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
-			   in->objectId));
-			in->deleted = 1;
-			in->myDev->nDeletedFiles++;
-			if (0 && in->myDev->isYaffs2) {
-				yaffs_ResizeFile(in, 0);
-			}
-			yaffs_SoftDeleteFile(in);
-		} else {
-			retVal =
-			    yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
-						   "unlinked", 0, 0);
-		}
 
+	if (immediateDeletion) {
+		retVal =
+		    yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+					   _Y("deleted"), 0, 0);
+		T(YAFFS_TRACE_TRACING,
+		  (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
+		   in->objectId));
+		in->deleted = 1;
+		in->myDev->nDeletedFiles++;
+		if (1 || in->myDev->isYaffs2)
+			yaffs_ResizeFile(in, 0);
+		yaffs_SoftDeleteFile(in);
+	} else {
+		retVal =
+		    yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+					   _Y("unlinked"), 0, 0);
 	}
+
+
 	return retVal;
 }
 
-int yaffs_DeleteFile(yaffs_Object * in)
+int yaffs_DeleteFile(yaffs_Object *in)
 {
 	int retVal = YAFFS_OK;
+	int deleted = in->deleted;
+
+	yaffs_ResizeFile(in, 0);
 
 	if (in->nDataChunks > 0) {
-		/* Use soft deletion if there is data in the file */
-		if (!in->unlinked) {
-			retVal = yaffs_UnlinkFile(in);
-		}
+		/* Use soft deletion if there is data in the file.
+		 * That won't be the case if it has been resized to zero.
+		 */
+		if (!in->unlinked)
+			retVal = yaffs_UnlinkFileIfNeeded(in);
+
 		if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
 			in->deleted = 1;
+			deleted = 1;
 			in->myDev->nDeletedFiles++;
 			yaffs_SoftDeleteFile(in);
 		}
-		return in->deleted ? YAFFS_OK : YAFFS_FAIL;
+		return deleted ? YAFFS_OK : YAFFS_FAIL;
 	} else {
 		/* The file has no data chunks so we toss it immediately */
 		yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
@@ -5141,62 +5164,75 @@ int yaffs_DeleteFile(yaffs_Object * in)
 	}
 }
 
-static int yaffs_DeleteDirectory(yaffs_Object * in)
+static int yaffs_DeleteDirectory(yaffs_Object *in)
 {
 	/* First check that the directory is empty. */
-	if (list_empty(&in->variant.directoryVariant.children)) {
+	if (ylist_empty(&in->variant.directoryVariant.children))
 		return yaffs_DoGenericObjectDeletion(in);
-	}
 
 	return YAFFS_FAIL;
 
 }
 
-static int yaffs_DeleteSymLink(yaffs_Object * in)
+static int yaffs_DeleteSymLink(yaffs_Object *in)
 {
 	YFREE(in->variant.symLinkVariant.alias);
 
 	return yaffs_DoGenericObjectDeletion(in);
 }
 
-static int yaffs_DeleteHardLink(yaffs_Object * in)
+static int yaffs_DeleteHardLink(yaffs_Object *in)
 {
 	/* remove this hardlink from the list assocaited with the equivalent
 	 * object
 	 */
-	list_del(&in->hardLinks);
+	ylist_del_init(&in->hardLinks);
 	return yaffs_DoGenericObjectDeletion(in);
 }
 
-static void yaffs_DestroyObject(yaffs_Object * obj)
+int yaffs_DeleteObject(yaffs_Object *obj)
 {
+int retVal = -1;
 	switch (obj->variantType) {
 	case YAFFS_OBJECT_TYPE_FILE:
-		yaffs_DeleteFile(obj);
+		retVal = yaffs_DeleteFile(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_DIRECTORY:
-		yaffs_DeleteDirectory(obj);
+		return yaffs_DeleteDirectory(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_SYMLINK:
-		yaffs_DeleteSymLink(obj);
+		retVal = yaffs_DeleteSymLink(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_HARDLINK:
-		yaffs_DeleteHardLink(obj);
+		retVal = yaffs_DeleteHardLink(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_SPECIAL:
-		yaffs_DoGenericObjectDeletion(obj);
+		retVal = yaffs_DoGenericObjectDeletion(obj);
 		break;
 	case YAFFS_OBJECT_TYPE_UNKNOWN:
+		retVal = 0;
 		break;		/* should not happen. */
 	}
+
+	return retVal;
 }
 
-static int yaffs_UnlinkWorker(yaffs_Object * obj)
+static int yaffs_UnlinkWorker(yaffs_Object *obj)
 {
 
+	int immediateDeletion = 0;
+
+#ifdef __KERNEL__
+	if (!obj->myInode)
+		immediateDeletion = 1;
+#else
+	if (obj->inUse <= 0)
+		immediateDeletion = 1;
+#endif
+
 	if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
 		return yaffs_DeleteHardLink(obj);
-	} else if (!list_empty(&obj->hardLinks)) {
+	} else if (!ylist_empty(&obj->hardLinks)) {
 		/* Curve ball: We're unlinking an object that has a hardlink.
 		 *
 		 * This problem arises because we are not strictly following
@@ -5215,24 +5251,24 @@ static int yaffs_UnlinkWorker(yaffs_Obje
 		int retVal;
 		YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
 
-		hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
+		hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
 
-		list_del_init(&hl->hardLinks);
-		list_del_init(&hl->siblings);
+		ylist_del_init(&hl->hardLinks);
+		ylist_del_init(&hl->siblings);
 
 		yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
 
 		retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
 
-		if (retVal == YAFFS_OK) {
+		if (retVal == YAFFS_OK)
 			retVal = yaffs_DoGenericObjectDeletion(hl);
-		}
+
 		return retVal;
 
-	} else {
+	} else if (immediateDeletion) {
 		switch (obj->variantType) {
 		case YAFFS_OBJECT_TYPE_FILE:
-			return yaffs_UnlinkFile(obj);
+			return yaffs_DeleteFile(obj);
 			break;
 		case YAFFS_OBJECT_TYPE_DIRECTORY:
 			return yaffs_DeleteDirectory(obj);
@@ -5248,21 +5284,22 @@ static int yaffs_UnlinkWorker(yaffs_Obje
 		default:
 			return YAFFS_FAIL;
 		}
-	}
+	} else
+		return yaffs_ChangeObjectName(obj, obj->myDev->unlinkedDir,
+					   _Y("unlinked"), 0, 0);
 }
 
 
-static int yaffs_UnlinkObject( yaffs_Object *obj)
+static int yaffs_UnlinkObject(yaffs_Object *obj)
 {
 
-	if (obj && obj->unlinkAllowed) {
+	if (obj && obj->unlinkAllowed)
 		return yaffs_UnlinkWorker(obj);
-	}
 
 	return YAFFS_FAIL;
 
 }
-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name)
+int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name)
 {
 	yaffs_Object *obj;
 
@@ -5272,8 +5309,8 @@ int yaffs_Unlink(yaffs_Object * dir, con
 
 /*----------------------- Initialisation Scanning ---------------------- */
 
-static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId,
-				       int backwardScanning)
+static void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId,
+				int backwardScanning)
 {
 	yaffs_Object *obj;
 
@@ -5286,9 +5323,8 @@ static void yaffs_HandleShadowedObject(y
 		/* Handle YAFFS2 case (backward scanning)
 		 * If the shadowed object exists then ignore.
 		 */
-		if (yaffs_FindObjectByNumber(dev, objId)) {
+		if (yaffs_FindObjectByNumber(dev, objId))
 			return;
-		}
 	}
 
 	/* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
@@ -5297,6 +5333,8 @@ static void yaffs_HandleShadowedObject(y
 	obj =
 	    yaffs_FindOrCreateObjectByNumber(dev, objId,
 					     YAFFS_OBJECT_TYPE_FILE);
+	if (!obj)
+		return;
 	yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
 	obj->variant.fileVariant.shrinkSize = 0;
 	obj->valid = 1;		/* So that we don't read any other info for this file */
@@ -5325,44 +5363,77 @@ static void yaffs_HardlinkFixup(yaffs_De
 		if (in) {
 			/* Add the hardlink pointers */
 			hl->variant.hardLinkVariant.equivalentObject = in;
-			list_add(&hl->hardLinks, &in->hardLinks);
+			ylist_add(&hl->hardLinks, &in->hardLinks);
 		} else {
 			/* Todo Need to report/handle this better.
 			 * Got a problem... hardlink to a non-existant object
 			 */
 			hl->variant.hardLinkVariant.equivalentObject = NULL;
-			INIT_LIST_HEAD(&hl->hardLinks);
+			YINIT_LIST_HEAD(&hl->hardLinks);
 
 		}
-
 	}
+}
+
+
 
+
+
+static int ybicmp(const void *a, const void *b)
+{
+	register int aseq = ((yaffs_BlockIndex *)a)->seq;
+	register int bseq = ((yaffs_BlockIndex *)b)->seq;
+	register int ablock = ((yaffs_BlockIndex *)a)->block;
+	register int bblock = ((yaffs_BlockIndex *)b)->block;
+	if (aseq == bseq)
+		return ablock - bblock;
+	else
+		return aseq - bseq;
 }
 
 
+struct yaffs_ShadowFixerStruct {
+	int objectId;
+	int shadowedId;
+	struct yaffs_ShadowFixerStruct *next;
+};
+
 
+static void yaffs_StripDeletedObjects(yaffs_Device *dev)
+{
+	/*
+	*  Sort out state of unlinked and deleted objects after scanning.
+	*/
+	struct ylist_head *i;
+	struct ylist_head *n;
+	yaffs_Object *l;
 
+	/* Soft delete all the unlinked files */
+	ylist_for_each_safe(i, n,
+		&dev->unlinkedDir->variant.directoryVariant.children) {
+		if (i) {
+			l = ylist_entry(i, yaffs_Object, siblings);
+			yaffs_DeleteObject(l);
+		}
+	}
 
-static int ybicmp(const void *a, const void *b){
-    register int aseq = ((yaffs_BlockIndex *)a)->seq;
-    register int bseq = ((yaffs_BlockIndex *)b)->seq;
-    register int ablock = ((yaffs_BlockIndex *)a)->block;
-    register int bblock = ((yaffs_BlockIndex *)b)->block;
-    if( aseq == bseq )
-        return ablock - bblock;
-    else
-        return aseq - bseq;
+	ylist_for_each_safe(i, n,
+		&dev->deletedDir->variant.directoryVariant.children) {
+		if (i) {
+			l = ylist_entry(i, yaffs_Object, siblings);
+			yaffs_DeleteObject(l);
+		}
+	}
 
 }
 
-static int yaffs_Scan(yaffs_Device * dev)
+static int yaffs_Scan(yaffs_Device *dev)
 {
 	yaffs_ExtendedTags tags;
 	int blk;
 	int blockIterator;
 	int startIterator;
 	int endIterator;
-	int nBlocksToScan = 0;
 	int result;
 
 	int chunk;
@@ -5371,26 +5442,19 @@ static int yaffs_Scan(yaffs_Device * dev
 	yaffs_BlockState state;
 	yaffs_Object *hardList = NULL;
 	yaffs_BlockInfo *bi;
-	int sequenceNumber;
+	__u32 sequenceNumber;
 	yaffs_ObjectHeader *oh;
 	yaffs_Object *in;
 	yaffs_Object *parent;
-	int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
 
 	int alloc_failed = 0;
 
+	struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
+
 
 	__u8 *chunkData;
 
-	yaffs_BlockIndex *blockIndex = NULL;
 
-	if (dev->isYaffs2) {
-		T(YAFFS_TRACE_SCAN,
-		  (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
-		return YAFFS_FAIL;
-	}
-
-	//TODO  Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
 
 	T(YAFFS_TRACE_SCAN,
 	  (TSTR("yaffs_Scan starts  intstartblk %d intendblk %d..." TENDSTR),
@@ -5400,12 +5464,6 @@ static int yaffs_Scan(yaffs_Device * dev
 
 	dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
 
-	if (dev->isYaffs2) {
-		blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
-		if(!blockIndex)
-			return YAFFS_FAIL;
-	}
-
 	/* Scan all the blocks to determine their state */
 	for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
 		bi = yaffs_GetBlockInfo(dev, blk);
@@ -5418,6 +5476,9 @@ static int yaffs_Scan(yaffs_Device * dev
 		bi->blockState = state;
 		bi->sequenceNumber = sequenceNumber;
 
+		if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+			bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
+
 		T(YAFFS_TRACE_SCAN_DEBUG,
 		  (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
 		   state, sequenceNumber));
@@ -5430,70 +5491,21 @@ static int yaffs_Scan(yaffs_Device * dev
 			  (TSTR("Block empty " TENDSTR)));
 			dev->nErasedBlocks++;
 			dev->nFreeChunks += dev->nChunksPerBlock;
-		} else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-
-			/* Determine the highest sequence number */
-			if (dev->isYaffs2 &&
-			    sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
-			    sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
-
-				blockIndex[nBlocksToScan].seq = sequenceNumber;
-				blockIndex[nBlocksToScan].block = blk;
-
-				nBlocksToScan++;
-
-				if (sequenceNumber >= dev->sequenceNumber) {
-					dev->sequenceNumber = sequenceNumber;
-				}
-			} else if (dev->isYaffs2) {
-				/* TODO: Nasty sequence number! */
-				T(YAFFS_TRACE_SCAN,
-				  (TSTR
-				   ("Block scanning block %d has bad sequence number %d"
-				    TENDSTR), blk, sequenceNumber));
-
-			}
 		}
 	}
 
-	/* Sort the blocks
-	 * Dungy old bubble sort for now...
-	 */
-	if (dev->isYaffs2) {
-		yaffs_BlockIndex temp;
-		int i;
-		int j;
-
-		for (i = 0; i < nBlocksToScan; i++)
-			for (j = i + 1; j < nBlocksToScan; j++)
-				if (blockIndex[i].seq > blockIndex[j].seq) {
-					temp = blockIndex[j];
-					blockIndex[j] = blockIndex[i];
-					blockIndex[i] = temp;
-				}
-	}
-
-	/* Now scan the blocks looking at the data. */
-	if (dev->isYaffs2) {
-		startIterator = 0;
-		endIterator = nBlocksToScan - 1;
-		T(YAFFS_TRACE_SCAN_DEBUG,
-		  (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
-	} else {
-		startIterator = dev->internalStartBlock;
-		endIterator = dev->internalEndBlock;
-	}
+	startIterator = dev->internalStartBlock;
+	endIterator = dev->internalEndBlock;
 
 	/* For each block.... */
 	for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
 	     blockIterator++) {
 
-		if (dev->isYaffs2) {
-			/* get the block to scan in the correct order */
-			blk = blockIndex[blockIterator].block;
-		} else {
-			blk = blockIterator;
-		}
+		YYIELD();
+
+		YYIELD();
+
+		blk = blockIterator;
 
 		bi = yaffs_GetBlockInfo(dev, blk);
 		state = bi->blockState;
@@ -5511,7 +5523,7 @@ static int yaffs_Scan(yaffs_Device * dev
 
 			/* Let's have a good look at this chunk... */
 
-			if (!dev->isYaffs2 && tags.chunkDeleted) {
+			if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
 				/* YAFFS1 only...
 				 * A deleted chunk
 				 */
@@ -5540,18 +5552,6 @@ static int yaffs_Scan(yaffs_Device * dev
 					dev->allocationBlockFinder = blk;
 					/* Set it to here to encourage the allocator to go forth from here. */
 
-					/* Yaffs2 sanity check:
-					 * This should be the one with the highest sequence number
-					 */
-					if (dev->isYaffs2
-					    && (dev->sequenceNumber !=
-						bi->sequenceNumber)) {
-						T(YAFFS_TRACE_ALWAYS,
-						  (TSTR
-						   ("yaffs: Allocation block %d was not highest sequence id:"
-						    " block seq = %d, dev seq = %d"
-						    TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber));
-					}
 				}
 
 				dev->nFreeChunks += (dev->nChunksPerBlock - c);
@@ -5570,11 +5570,11 @@ static int yaffs_Scan(yaffs_Device * dev
 				 * the same chunkId).
 				 */
 
-				if(!in)
+				if (!in)
 					alloc_failed = 1;
 
-				if(in){
-					if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1))
+				if (in) {
+					if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1))
 						alloc_failed = 1;
 				}
 
@@ -5617,7 +5617,7 @@ static int yaffs_Scan(yaffs_Device * dev
 					 * deleted, and worse still it has changed type. Delete the old object.
 					 */
 
-					yaffs_DestroyObject(in);
+					yaffs_DeleteObject(in);
 
 					in = 0;
 				}
@@ -5627,14 +5627,20 @@ static int yaffs_Scan(yaffs_Device * dev
 								      objectId,
 								      oh->type);
 
-				if(!in)
+				if (!in)
 					alloc_failed = 1;
 
 				if (in && oh->shadowsObject > 0) {
-					yaffs_HandleShadowedObject(dev,
-								   oh->
-								   shadowsObject,
-								   0);
+
+					struct yaffs_ShadowFixerStruct *fixer;
+					fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
+					if (fixer) {
+						fixer->next = shadowFixerList;
+						shadowFixerList = fixer;
+						fixer->objectId = tags.objectId;
+						fixer->shadowedId = oh->shadowsObject;
+					}
+
 				}
 
 				if (in && in->valid) {
@@ -5643,12 +5649,10 @@ static int yaffs_Scan(yaffs_Device * dev
 					unsigned existingSerial = in->serial;
 					unsigned newSerial = tags.serialNumber;
 
-					if (dev->isYaffs2 ||
-					    ((existingSerial + 1) & 3) ==
-					    newSerial) {
+					if (((existingSerial + 1) & 3) == newSerial) {
 						/* Use new one - destroy the exisiting one */
 						yaffs_DeleteChunk(dev,
-								  in->chunkId,
+								  in->hdrChunk,
 								  1, __LINE__);
 						in->valid = 0;
 					} else {
@@ -5681,7 +5685,8 @@ static int yaffs_Scan(yaffs_Device * dev
 					in->yst_ctime = oh->yst_ctime;
 					in->yst_rdev = oh->yst_rdev;
 #endif
-					in->chunkId = chunk;
+					in->hdrChunk = chunk;
+					in->serial = tags.serialNumber;
 
 				} else if (in && !in->valid) {
 					/* we need to load this info */
@@ -5705,7 +5710,8 @@ static int yaffs_Scan(yaffs_Device * dev
 					in->yst_ctime = oh->yst_ctime;
 					in->yst_rdev = oh->yst_rdev;
 #endif
-					in->chunkId = chunk;
+					in->hdrChunk = chunk;
+					in->serial = tags.serialNumber;
 
 					yaffs_SetObjectName(in, oh->name);
 					in->dirty = 0;
@@ -5718,25 +5724,25 @@ static int yaffs_Scan(yaffs_Device * dev
 					    yaffs_FindOrCreateObjectByNumber
 					    (dev, oh->parentObjectId,
 					     YAFFS_OBJECT_TYPE_DIRECTORY);
-					if (parent->variantType ==
+					if (!parent)
+						alloc_failed = 1;
+					if (parent && parent->variantType ==
 					    YAFFS_OBJECT_TYPE_UNKNOWN) {
 						/* Set up as a directory */
 						parent->variantType =
-						    YAFFS_OBJECT_TYPE_DIRECTORY;
-						INIT_LIST_HEAD(&parent->variant.
-							       directoryVariant.
-							       children);
-					} else if (parent->variantType !=
-						   YAFFS_OBJECT_TYPE_DIRECTORY)
-					{
+							YAFFS_OBJECT_TYPE_DIRECTORY;
+						YINIT_LIST_HEAD(&parent->variant.
+								directoryVariant.
+								children);
+					} else if (!parent || parent->variantType !=
+						   YAFFS_OBJECT_TYPE_DIRECTORY) {
 						/* Hoosterman, another problem....
 						 * We're trying to use a non-directory as a directory
 						 */
 
 						T(YAFFS_TRACE_ERROR,
 						  (TSTR
-						   ("yaffs tragedy: attempting to use non-directory as"
-						    " a directory in scan. Put in lost+found."
+						   ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
 						    TENDSTR)));
 						parent = dev->lostNFoundDir;
 					}
@@ -5760,15 +5766,6 @@ static int yaffs_Scan(yaffs_Device * dev
 						/* Todo got a problem */
 						break;
 					case YAFFS_OBJECT_TYPE_FILE:
-						if (dev->isYaffs2
-						    && oh->isShrink) {
-							/* Prune back the shrunken chunks */
-							yaffs_PruneResizedChunks
-							    (in, oh->fileSize);
-							/* Mark the block as having a shrinkHeader */
-							bi->hasShrinkHeader = 1;
-						}
-
 						if (dev->useHeaderFileSize)
 
 							in->variant.fileVariant.
@@ -5778,11 +5775,11 @@ static int yaffs_Scan(yaffs_Device * dev
 						break;
 					case YAFFS_OBJECT_TYPE_HARDLINK:
 						in->variant.hardLinkVariant.
-						    equivalentObjectId =
-						    oh->equivalentObjectId;
+							equivalentObjectId =
+							oh->equivalentObjectId;
 						in->hardLinks.next =
-						    (struct list_head *)
-						    hardList;
+							(struct ylist_head *)
+							hardList;
 						hardList = in;
 						break;
 					case YAFFS_OBJECT_TYPE_DIRECTORY:
@@ -5794,15 +5791,17 @@ static int yaffs_Scan(yaffs_Device * dev
 					case YAFFS_OBJECT_TYPE_SYMLINK:
 						in->variant.symLinkVariant.alias =
 						    yaffs_CloneString(oh->alias);
-						if(!in->variant.symLinkVariant.alias)
+						if (!in->variant.symLinkVariant.alias)
 							alloc_failed = 1;
 						break;
 					}
 
+/*
 					if (parent == dev->deletedDir) {
 						yaffs_DestroyObject(in);
 						bi->hasShrinkHeader = 1;
 					}
+*/
 				}
 			}
 		}
@@ -5823,10 +5822,6 @@ static int yaffs_Scan(yaffs_Device * dev
 
 	}
 
-	if (blockIndex) {
-		YFREE(blockIndex);
-	}
-
 
 	/* Ok, we've done all the scanning.
 	 * Fix up the hard link chains.
@@ -5834,32 +5829,36 @@ static int yaffs_Scan(yaffs_Device * dev
 	 * hardlinks.
 	 */
 
-	yaffs_HardlinkFixup(dev,hardList);
+	yaffs_HardlinkFixup(dev, hardList);
 
-	/* Handle the unlinked files. Since they were left in an unlinked state we should
-	 * just delete them.
-	 */
+	/* Fix up any shadowed objects */
 	{
-		struct list_head *i;
-		struct list_head *n;
+		struct yaffs_ShadowFixerStruct *fixer;
+		yaffs_Object *obj;
 
-		yaffs_Object *l;
-		/* Soft delete all the unlinked files */
-		list_for_each_safe(i, n,
-				   &dev->unlinkedDir->variant.directoryVariant.
-				   children) {
-			if (i) {
-				l = list_entry(i, yaffs_Object, siblings);
-				yaffs_DestroyObject(l);
-			}
+		while (shadowFixerList) {
+			fixer = shadowFixerList;
+			shadowFixerList = fixer->next;
+			/* Complete the rename transaction by deleting the shadowed object
+			 * then setting the object header to unshadowed.
+			 */
+			obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId);
+			if (obj)
+				yaffs_DeleteObject(obj);
+
+			obj = yaffs_FindObjectByNumber(dev, fixer->objectId);
+
+			if (obj)
+				yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
+
+			YFREE(fixer);
 		}
 	}
 
 	yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
 
-	if(alloc_failed){
+	if (alloc_failed)
 		return YAFFS_FAIL;
-	}
 
 	T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
 
@@ -5871,25 +5870,27 @@ static void yaffs_CheckObjectDetailsLoad
 {
 	__u8 *chunkData;
 	yaffs_ObjectHeader *oh;
-	yaffs_Device *dev = in->myDev;
+	yaffs_Device *dev;
 	yaffs_ExtendedTags tags;
 	int result;
 	int alloc_failed = 0;
 
-	if(!in)
+	if (!in)
 		return;
 
+	dev = in->myDev;
+
 #if 0
-	T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
+	T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
 		in->objectId,
 		in->lazyLoaded ? "not yet" : "already"));
 #endif
 
-	if(in->lazyLoaded){
+	if (in->lazyLoaded && in->hdrChunk > 0) {
 		in->lazyLoaded = 0;
 		chunkData = yaffs_GetTempBuffer(dev, __LINE__);
 
-		result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
+		result = yaffs_ReadChunkWithTagsFromNAND(dev, in->hdrChunk, chunkData, &tags);
 		oh = (yaffs_ObjectHeader *) chunkData;
 
 		in->yst_mode = oh->yst_mode;
@@ -5911,18 +5912,18 @@ static void yaffs_CheckObjectDetailsLoad
 #endif
 		yaffs_SetObjectName(in, oh->name);
 
-		if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
-			 in->variant.symLinkVariant.alias =
+		if (in->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+			in->variant.symLinkVariant.alias =
 						    yaffs_CloneString(oh->alias);
-			if(!in->variant.symLinkVariant.alias)
+			if (!in->variant.symLinkVariant.alias)
 				alloc_failed = 1; /* Not returned to caller */
 		}
 
-		yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
+		yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
 	}
 }
 
-static int yaffs_ScanBackwards(yaffs_Device * dev)
+static int yaffs_ScanBackwards(yaffs_Device *dev)
 {
 	yaffs_ExtendedTags tags;
 	int blk;
@@ -5938,7 +5939,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 	yaffs_BlockState state;
 	yaffs_Object *hardList = NULL;
 	yaffs_BlockInfo *bi;
-	int sequenceNumber;
+	__u32 sequenceNumber;
 	yaffs_ObjectHeader *oh;
 	yaffs_Object *in;
 	yaffs_Object *parent;
@@ -5972,12 +5973,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 	blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
 
-	if(!blockIndex) {
+	if (!blockIndex) {
 		blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
 		altBlockIndex = 1;
 	}
 
-	if(!blockIndex) {
+	if (!blockIndex) {
 		T(YAFFS_TRACE_SCAN,
 		  (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
 		return YAFFS_FAIL;
@@ -5999,15 +6000,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
 		bi->blockState = state;
 		bi->sequenceNumber = sequenceNumber;
 
-		if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
+		if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
 			bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
+		if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK)
+			bi->blockState = state = YAFFS_BLOCK_STATE_DEAD;
 
 		T(YAFFS_TRACE_SCAN_DEBUG,
 		  (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
 		   state, sequenceNumber));
 
 
-		if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
+		if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
 			dev->blocksInCheckpoint++;
 
 		} else if (state == YAFFS_BLOCK_STATE_DEAD) {
@@ -6021,8 +6024,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 		} else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
 
 			/* Determine the highest sequence number */
-			if (dev->isYaffs2 &&
-			    sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+			if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
 			    sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
 
 				blockIndex[nBlocksToScan].seq = sequenceNumber;
@@ -6030,10 +6032,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 				nBlocksToScan++;
 
-				if (sequenceNumber >= dev->sequenceNumber) {
+				if (sequenceNumber >= dev->sequenceNumber)
 					dev->sequenceNumber = sequenceNumber;
-				}
-			} else if (dev->isYaffs2) {
+			} else {
 				/* TODO: Nasty sequence number! */
 				T(YAFFS_TRACE_SCAN,
 				  (TSTR
@@ -6053,11 +6054,13 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 	/* Sort the blocks */
 #ifndef CONFIG_YAFFS_USE_OWN_SORT
-	yaffs_qsort(blockIndex, nBlocksToScan,
-		sizeof(yaffs_BlockIndex), ybicmp);
+	{
+		/* Use qsort now. */
+		yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
+	}
 #else
 	{
-	 	/* Dungy old bubble sort... */
+		/* Dungy old bubble sort... */
 
 		yaffs_BlockIndex temp;
 		int i;
@@ -6075,7 +6078,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 	YYIELD();
 
-    	T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
+	T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
 
 	/* Now scan the blocks looking at the data. */
 	startIterator = 0;
@@ -6085,10 +6088,10 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 	/* For each block.... backwards */
 	for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
-	     blockIterator--) {
-	        /* Cooperative multitasking! This loop can run for so
+			blockIterator--) {
+		/* Cooperative multitasking! This loop can run for so
 		   long that watchdog timers expire. */
-	        YYIELD();
+		YYIELD();
 
 		/* get the block to scan in the correct order */
 		blk = blockIndex[blockIterator].block;
@@ -6127,10 +6130,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
 				 * this is the one being allocated from
 				 */
 
-				if(foundChunksInBlock)
-				{
+				if (foundChunksInBlock) {
 					/* This is a chunk that was skipped due to failing the erased check */
-
 				} else if (c == 0) {
 					/* We're looking at the first chunk in the block so the block is unused */
 					state = YAFFS_BLOCK_STATE_EMPTY;
@@ -6138,7 +6139,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 				} else {
 					if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
 					    state == YAFFS_BLOCK_STATE_ALLOCATING) {
-					    	if(dev->sequenceNumber == bi->sequenceNumber) {
+						if (dev->sequenceNumber == bi->sequenceNumber) {
 							/* this is the block being allocated from */
 
 							T(YAFFS_TRACE_SCAN,
@@ -6150,27 +6151,31 @@ static int yaffs_ScanBackwards(yaffs_Dev
 							dev->allocationBlock = blk;
 							dev->allocationPage = c;
 							dev->allocationBlockFinder = blk;
-						}
-						else {
+						} else {
 							/* This is a partially written block that is not
 							 * the current allocation block. This block must have
 							 * had a write failure, so set up for retirement.
 							 */
 
-							 bi->needsRetiring = 1;
+							 /* bi->needsRetiring = 1; ??? TODO */
 							 bi->gcPrioritise = 1;
 
 							 T(YAFFS_TRACE_ALWAYS,
-							 (TSTR("Partially written block %d being set for retirement" TENDSTR),
+							 (TSTR("Partially written block %d detected" TENDSTR),
 							 blk));
 						}
-
 					}
-
 				}
 
 				dev->nFreeChunks++;
 
+			} else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) {
+				T(YAFFS_TRACE_SCAN,
+				  (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
+				  blk, c));
+
+				  dev->nFreeChunks++;
+
 			} else if (tags.chunkId > 0) {
 				/* chunkId > 0 so it is a data chunk... */
 				unsigned int endpos;
@@ -6187,7 +6192,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 								      tags.
 								      objectId,
 								      YAFFS_OBJECT_TYPE_FILE);
-				if(!in){
+				if (!in) {
 					/* Out of memory */
 					alloc_failed = 1;
 				}
@@ -6197,8 +6202,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
 				    && chunkBase <
 				    in->variant.fileVariant.shrinkSize) {
 					/* This has not been invalidated by a resize */
-					if(!yaffs_PutChunkIntoFile(in, tags.chunkId,
-							       chunk, -1)){
+					if (!yaffs_PutChunkIntoFile(in, tags.chunkId,
+							       chunk, -1)) {
 						alloc_failed = 1;
 					}
 
@@ -6221,7 +6226,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 						    scannedFileSize;
 					}
 
-				} else if(in) {
+				} else if (in) {
 					/* This chunk has been invalidated by a resize, so delete */
 					yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
 
@@ -6242,6 +6247,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
 					in = yaffs_FindOrCreateObjectByNumber
 					    (dev, tags.objectId,
 					     tags.extraObjectType);
+					if (!in)
+						alloc_failed = 1;
 				}
 
 				if (!in ||
@@ -6251,8 +6258,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 				    tags.extraShadows ||
 				    (!in->valid &&
 				    (tags.objectId == YAFFS_OBJECTID_ROOT ||
-				     tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))
-				    ) {
+				     tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) {
 
 					/* If we don't have  valid info then we need to read the chunk
 					 * TODO In future we can probably defer reading the chunk and
@@ -6266,8 +6272,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 					oh = (yaffs_ObjectHeader *) chunkData;
 
-					if (!in)
+					if (dev->inbandTags) {
+						/* Fix up the header if they got corrupted by inband tags */
+						oh->shadowsObject = oh->inbandShadowsObject;
+						oh->isShrink = oh->inbandIsShrink;
+					}
+
+					if (!in) {
 						in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
+						if (!in)
+							alloc_failed = 1;
+					}
 
 				}
 
@@ -6275,10 +6290,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
 					/* TODO Hoosterman we have a problem! */
 					T(YAFFS_TRACE_ERROR,
 					  (TSTR
-					   ("yaffs tragedy: Could not make object for object  %d  "
-					    "at chunk %d during scan"
+					   ("yaffs tragedy: Could not make object for object  %d at chunk %d during scan"
 					    TENDSTR), tags.objectId, chunk));
-
+					continue;
 				}
 
 				if (in->valid) {
@@ -6289,10 +6303,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 					if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
 					     ((oh &&
-					       oh-> type == YAFFS_OBJECT_TYPE_FILE)||
+					       oh->type == YAFFS_OBJECT_TYPE_FILE) ||
 					      (tags.extraHeaderInfoAvailable  &&
-					       tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
-					    ) {
+					       tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) {
 						__u32 thisSize =
 						    (oh) ? oh->fileSize : tags.
 						    extraFileLength;
@@ -6300,7 +6313,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
 						    (oh) ? oh->
 						    parentObjectId : tags.
 						    extraParentObjectId;
-						unsigned isShrink =
+
+
+						isShrink =
 						    (oh) ? oh->isShrink : tags.
 						    extraIsShrinkHeader;
 
@@ -6323,9 +6338,8 @@ static int yaffs_ScanBackwards(yaffs_Dev
 							    thisSize;
 						}
 
-						if (isShrink) {
+						if (isShrink)
 							bi->hasShrinkHeader = 1;
-						}
 
 					}
 					/* Use existing - destroy this one. */
@@ -6333,6 +6347,17 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 				}
 
+				if (!in->valid && in->variantType !=
+				    (oh ? oh->type : tags.extraObjectType))
+					T(YAFFS_TRACE_ERROR, (
+						TSTR("yaffs tragedy: Bad object type, "
+					    TCONT("%d != %d, for object %d at chunk ")
+					    TCONT("%d during scan")
+						TENDSTR), oh ?
+					    oh->type : tags.extraObjectType,
+					    in->variantType, tags.objectId,
+					    chunk));
+
 				if (!in->valid &&
 				    (tags.objectId == YAFFS_OBJECTID_ROOT ||
 				     tags.objectId ==
@@ -6340,7 +6365,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
 					/* We only load some info, don't fiddle with directory structure */
 					in->valid = 1;
 
-					if(oh) {
+					if (oh) {
 						in->variantType = oh->type;
 
 						in->yst_mode = oh->yst_mode;
@@ -6365,15 +6390,15 @@ static int yaffs_ScanBackwards(yaffs_Dev
 						in->lazyLoaded = 1;
 					}
 
-					in->chunkId = chunk;
+					in->hdrChunk = chunk;
 
 				} else if (!in->valid) {
 					/* we need to load this info */
 
 					in->valid = 1;
-					in->chunkId = chunk;
+					in->hdrChunk = chunk;
 
-					if(oh) {
+					if (oh) {
 						in->variantType = oh->type;
 
 						in->yst_mode = oh->yst_mode;
@@ -6403,20 +6428,19 @@ static int yaffs_ScanBackwards(yaffs_Dev
 						yaffs_SetObjectName(in, oh->name);
 						parent =
 						    yaffs_FindOrCreateObjectByNumber
-					    		(dev, oh->parentObjectId,
-					     		 YAFFS_OBJECT_TYPE_DIRECTORY);
+							(dev, oh->parentObjectId,
+							 YAFFS_OBJECT_TYPE_DIRECTORY);
 
 						 fileSize = oh->fileSize;
- 						 isShrink = oh->isShrink;
+						 isShrink = oh->isShrink;
 						 equivalentObjectId = oh->equivalentObjectId;
 
-					}
-					else {
+					} else {
 						in->variantType = tags.extraObjectType;
 						parent =
 						    yaffs_FindOrCreateObjectByNumber
-					    		(dev, tags.extraParentObjectId,
-					     		 YAFFS_OBJECT_TYPE_DIRECTORY);
+							(dev, tags.extraParentObjectId,
+							 YAFFS_OBJECT_TYPE_DIRECTORY);
 						 fileSize = tags.extraFileLength;
 						 isShrink = tags.extraIsShrinkHeader;
 						 equivalentObjectId = tags.extraEquivalentObjectId;
@@ -6425,29 +6449,30 @@ static int yaffs_ScanBackwards(yaffs_Dev
 					}
 					in->dirty = 0;
 
+					if (!parent)
+						alloc_failed = 1;
+
 					/* directory stuff...
 					 * hook up to parent
 					 */
 
-					if (parent->variantType ==
+					if (parent && parent->variantType ==
 					    YAFFS_OBJECT_TYPE_UNKNOWN) {
 						/* Set up as a directory */
 						parent->variantType =
-						    YAFFS_OBJECT_TYPE_DIRECTORY;
-						INIT_LIST_HEAD(&parent->variant.
-							       directoryVariant.
-							       children);
-					} else if (parent->variantType !=
-						   YAFFS_OBJECT_TYPE_DIRECTORY)
-					{
+							YAFFS_OBJECT_TYPE_DIRECTORY;
+						YINIT_LIST_HEAD(&parent->variant.
+							directoryVariant.
+							children);
+					} else if (!parent || parent->variantType !=
+						   YAFFS_OBJECT_TYPE_DIRECTORY) {
 						/* Hoosterman, another problem....
 						 * We're trying to use a non-directory as a directory
 						 */
 
 						T(YAFFS_TRACE_ERROR,
 						  (TSTR
-						   ("yaffs tragedy: attempting to use non-directory as"
-						    " a directory in scan. Put in lost+found."
+						   ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
 						    TENDSTR)));
 						parent = dev->lostNFoundDir;
 					}
@@ -6494,12 +6519,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
 
 						break;
 					case YAFFS_OBJECT_TYPE_HARDLINK:
-						if(!itsUnlinked) {
-						  in->variant.hardLinkVariant.equivalentObjectId =
-						    equivalentObjectId;
-						  in->hardLinks.next =
-						    (struct list_head *) hardList;
-						  hardList = in;
+						if (!itsUnlinked) {
+							in->variant.hardLinkVariant.equivalentObjectId =
+								equivalentObjectId;
+							in->hardLinks.next =
+								(struct ylist_head *) hardList;
+							hardList = in;
 						}
 						break;
 					case YAFFS_OBJECT_TYPE_DIRECTORY:
@@ -6509,12 +6534,11 @@ static int yaffs_ScanBackwards(yaffs_Dev
 						/* Do nothing */
 						break;
 					case YAFFS_OBJECT_TYPE_SYMLINK:
-						if(oh){
-						   in->variant.symLinkVariant.alias =
-						    yaffs_CloneString(oh->
-								      alias);
-						   if(!in->variant.symLinkVariant.alias)
-						   	alloc_failed = 1;
+						if (oh) {
+							in->variant.symLinkVariant.alias =
+								yaffs_CloneString(oh->alias);
+							if (!in->variant.symLinkVariant.alias)
+								alloc_failed = 1;
 						}
 						break;
 					}
@@ -6551,75 +6575,129 @@ static int yaffs_ScanBackwards(yaffs_Dev
 	 * We should now have scanned all the objects, now it's time to add these
 	 * hardlinks.
 	 */
-	yaffs_HardlinkFixup(dev,hardList);
+	yaffs_HardlinkFixup(dev, hardList);
 
 
-	/*
-	*  Sort out state of unlinked and deleted objects.
-	*/
-	{
-		struct list_head *i;
-		struct list_head *n;
+	yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
 
-		yaffs_Object *l;
+	if (alloc_failed)
+		return YAFFS_FAIL;
 
-		/* Soft delete all the unlinked files */
-		list_for_each_safe(i, n,
-				   &dev->unlinkedDir->variant.directoryVariant.
-				   children) {
-			if (i) {
-				l = list_entry(i, yaffs_Object, siblings);
-				yaffs_DestroyObject(l);
-			}
-		}
+	T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
 
-		/* Soft delete all the deletedDir files */
-		list_for_each_safe(i, n,
-				   &dev->deletedDir->variant.directoryVariant.
-				   children) {
-			if (i) {
-				l = list_entry(i, yaffs_Object, siblings);
-				yaffs_DestroyObject(l);
+	return YAFFS_OK;
+}
 
-			}
+/*------------------------------  Directory Functions ----------------------------- */
+
+static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
+{
+	struct ylist_head *lh;
+	yaffs_Object *listObj;
+
+	int count = 0;
+
+	if (!obj) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
+		YBUG();
+		return;
+	}
+
+	if (yaffs_SkipVerification(obj->myDev))
+		return;
+
+	if (!obj->parent) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
+		YBUG();
+		return;
+	}
+
+	if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
+		YBUG();
+	}
+
+	/* Iterate through the objects in each hash entry */
+
+	ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
+		if (lh) {
+			listObj = ylist_entry(lh, yaffs_Object, siblings);
+			yaffs_VerifyObject(listObj);
+			if (obj == listObj)
+				count++;
 		}
+	 }
+
+	if (count != 1) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
+		YBUG();
 	}
+}
 
-	yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
+static void yaffs_VerifyDirectory(yaffs_Object *directory)
+{
+	struct ylist_head *lh;
+	yaffs_Object *listObj;
 
-	if(alloc_failed){
-		return YAFFS_FAIL;
+	if (!directory) {
+		YBUG();
+		return;
 	}
 
-	T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
+	if (yaffs_SkipFullVerification(directory->myDev))
+		return;
 
-	return YAFFS_OK;
+	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+		T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType));
+		YBUG();
+	}
+
+	/* Iterate through the objects in each hash entry */
+
+	ylist_for_each(lh, &directory->variant.directoryVariant.children) {
+		if (lh) {
+			listObj = ylist_entry(lh, yaffs_Object, siblings);
+			if (listObj->parent != directory) {
+				T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
+				YBUG();
+			}
+			yaffs_VerifyObjectInDirectory(listObj);
+		}
+	}
 }
 
-/*------------------------------  Directory Functions ----------------------------- */
 
-static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj)
 {
 	yaffs_Device *dev = obj->myDev;
+	yaffs_Object *parent;
+
+	yaffs_VerifyObjectInDirectory(obj);
+	parent = obj->parent;
+
+	yaffs_VerifyDirectory(parent);
 
-	if(dev && dev->removeObjectCallback)
+	if (dev && dev->removeObjectCallback)
 		dev->removeObjectCallback(obj);
 
-	list_del_init(&obj->siblings);
+
+	ylist_del_init(&obj->siblings);
 	obj->parent = NULL;
+
+	yaffs_VerifyDirectory(parent);
 }
 
 
-static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
-				       yaffs_Object * obj)
+static void yaffs_AddObjectToDirectory(yaffs_Object *directory,
+					yaffs_Object *obj)
 {
-
 	if (!directory) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
 		   ("tragedy: Trying to add an object to a null pointer directory"
 		    TENDSTR)));
 		YBUG();
+		return;
 	}
 	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
@@ -6631,37 +6709,42 @@ static void yaffs_AddObjectToDirectory(y
 
 	if (obj->siblings.prev == NULL) {
 		/* Not initialised */
-		INIT_LIST_HEAD(&obj->siblings);
-
-	} else if (!list_empty(&obj->siblings)) {
-		/* If it is holed up somewhere else, un hook it */
-		yaffs_RemoveObjectFromDirectory(obj);
+		YBUG();
 	}
+
+
+	yaffs_VerifyDirectory(directory);
+
+	yaffs_RemoveObjectFromDirectory(obj);
+
+
 	/* Now add it */
-	list_add(&obj->siblings, &directory->variant.directoryVariant.children);
+	ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
 	obj->parent = directory;
 
 	if (directory == obj->myDev->unlinkedDir
-	    || directory == obj->myDev->deletedDir) {
+			|| directory == obj->myDev->deletedDir) {
 		obj->unlinked = 1;
 		obj->myDev->nUnlinkedFiles++;
 		obj->renameAllowed = 0;
 	}
+
+	yaffs_VerifyDirectory(directory);
+	yaffs_VerifyObjectInDirectory(obj);
 }
 
-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
-				     const YCHAR * name)
+yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,
+				     const YCHAR *name)
 {
 	int sum;
 
-	struct list_head *i;
+	struct ylist_head *i;
 	YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
 
 	yaffs_Object *l;
 
-	if (!name) {
+	if (!name)
 		return NULL;
-	}
 
 	if (!directory) {
 		T(YAFFS_TRACE_ALWAYS,
@@ -6669,6 +6752,7 @@ yaffs_Object *yaffs_FindObjectByName(yaf
 		   ("tragedy: yaffs_FindObjectByName: null pointer directory"
 		    TENDSTR)));
 		YBUG();
+		return NULL;
 	}
 	if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
@@ -6679,28 +6763,27 @@ yaffs_Object *yaffs_FindObjectByName(yaf
 
 	sum = yaffs_CalcNameSum(name);
 
-	list_for_each(i, &directory->variant.directoryVariant.children) {
+	ylist_for_each(i, &directory->variant.directoryVariant.children) {
 		if (i) {
-			l = list_entry(i, yaffs_Object, siblings);
+			l = ylist_entry(i, yaffs_Object, siblings);
+
+			if (l->parent != directory)
+				YBUG();
 
 			yaffs_CheckObjectDetailsLoaded(l);
 
 			/* Special case for lost-n-found */
 			if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
-				if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
+				if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
 					return l;
-				}
-			} else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
-			{
-				/* LostnFound cunk called Objxxx
+			} else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0) {
+				/* LostnFound chunk called Objxxx
 				 * Do a real check
 				 */
 				yaffs_GetObjectName(l, buffer,
 						    YAFFS_MAX_NAME_LENGTH);
-				if (yaffs_strncmp(name, buffer,YAFFS_MAX_NAME_LENGTH) == 0) {
+				if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
 					return l;
-				}
-
 			}
 		}
 	}
@@ -6710,10 +6793,10 @@ yaffs_Object *yaffs_FindObjectByName(yaf
 
 
 #if 0
-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
-				   int (*fn) (yaffs_Object *))
+int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
+					int (*fn) (yaffs_Object *))
 {
-	struct list_head *i;
+	struct ylist_head *i;
 	yaffs_Object *l;
 
 	if (!theDir) {
@@ -6722,20 +6805,21 @@ int yaffs_ApplyToDirectoryChildren(yaffs
 		   ("tragedy: yaffs_FindObjectByName: null pointer directory"
 		    TENDSTR)));
 		YBUG();
+		return YAFFS_FAIL;
 	}
 	if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
 		   ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
 		YBUG();
+		return YAFFS_FAIL;
 	}
 
-	list_for_each(i, &theDir->variant.directoryVariant.children) {
+	ylist_for_each(i, &theDir->variant.directoryVariant.children) {
 		if (i) {
-			l = list_entry(i, yaffs_Object, siblings);
-			if (l && !fn(l)) {
+			l = ylist_entry(i, yaffs_Object, siblings);
+			if (l && !fn(l))
 				return YAFFS_FAIL;
-			}
 		}
 	}
 
@@ -6748,7 +6832,7 @@ int yaffs_ApplyToDirectoryChildren(yaffs
  * actual object.
  */
 
-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj)
+yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj)
 {
 	if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
 		/* We want the object id of the equivalent object, not this one */
@@ -6756,10 +6840,9 @@ yaffs_Object *yaffs_GetEquivalentObject(
 		yaffs_CheckObjectDetailsLoaded(obj);
 	}
 	return obj;
-
 }
 
-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
+int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize)
 {
 	memset(name, 0, buffSize * sizeof(YCHAR));
 
@@ -6767,18 +6850,26 @@ int yaffs_GetObjectName(yaffs_Object * o
 
 	if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
 		yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
-	} else if (obj->chunkId <= 0) {
+	} else if (obj->hdrChunk <= 0) {
 		YCHAR locName[20];
+		YCHAR numString[20];
+		YCHAR *x = &numString[19];
+		unsigned v = obj->objectId;
+		numString[19] = 0;
+		while (v > 0) {
+			x--;
+			*x = '0' + (v % 10);
+			v /= 10;
+		}
 		/* make up a name */
-		yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
-			      obj->objectId);
+		yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
+		yaffs_strcat(locName, x);
 		yaffs_strncpy(name, locName, buffSize - 1);
 
 	}
 #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-	else if (obj->shortName[0]) {
+	else if (obj->shortName[0])
 		yaffs_strcpy(name, obj->shortName);
-	}
 #endif
 	else {
 		int result;
@@ -6788,9 +6879,9 @@ int yaffs_GetObjectName(yaffs_Object * o
 
 		memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
 
-		if (obj->chunkId >= 0) {
+		if (obj->hdrChunk > 0) {
 			result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
-							obj->chunkId, buffer,
+							obj->hdrChunk, buffer,
 							NULL);
 		}
 		yaffs_strncpy(name, oh->name, buffSize - 1);
@@ -6801,46 +6892,43 @@ int yaffs_GetObjectName(yaffs_Object * o
 	return yaffs_strlen(name);
 }
 
-int yaffs_GetObjectFileLength(yaffs_Object * obj)
+int yaffs_GetObjectFileLength(yaffs_Object *obj)
 {
-
 	/* Dereference any hard linking */
 	obj = yaffs_GetEquivalentObject(obj);
 
-	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+	if (obj->variantType == YAFFS_OBJECT_TYPE_FILE)
 		return obj->variant.fileVariant.fileSize;
-	}
-	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
 		return yaffs_strlen(obj->variant.symLinkVariant.alias);
-	} else {
+	else {
 		/* Only a directory should drop through to here */
 		return obj->myDev->nDataBytesPerChunk;
 	}
 }
 
-int yaffs_GetObjectLinkCount(yaffs_Object * obj)
+int yaffs_GetObjectLinkCount(yaffs_Object *obj)
 {
 	int count = 0;
-	struct list_head *i;
+	struct ylist_head *i;
 
-	if (!obj->unlinked) {
-		count++;	/* the object itself */
-	}
-	list_for_each(i, &obj->hardLinks) {
-		count++;	/* add the hard links; */
-	}
-	return count;
+	if (!obj->unlinked)
+		count++;		/* the object itself */
+
+	ylist_for_each(i, &obj->hardLinks)
+		count++;		/* add the hard links; */
 
+	return count;
 }
 
-int yaffs_GetObjectInode(yaffs_Object * obj)
+int yaffs_GetObjectInode(yaffs_Object *obj)
 {
 	obj = yaffs_GetEquivalentObject(obj);
 
 	return obj->objectId;
 }
 
-unsigned yaffs_GetObjectType(yaffs_Object * obj)
+unsigned yaffs_GetObjectType(yaffs_Object *obj)
 {
 	obj = yaffs_GetEquivalentObject(obj);
 
@@ -6872,19 +6960,18 @@ unsigned yaffs_GetObjectType(yaffs_Objec
 	}
 }
 
-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj)
+YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj)
 {
 	obj = yaffs_GetEquivalentObject(obj);
-	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
+	if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
 		return yaffs_CloneString(obj->variant.symLinkVariant.alias);
-	} else {
+	else
 		return yaffs_CloneString(_Y(""));
-	}
 }
 
 #ifndef CONFIG_YAFFS_WINCE
 
-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr)
+int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr)
 {
 	unsigned int valid = attr->ia_valid;
 
@@ -6910,7 +6997,7 @@ int yaffs_SetAttributes(yaffs_Object * o
 	return YAFFS_OK;
 
 }
-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr)
+int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr)
 {
 	unsigned int valid = 0;
 
@@ -6934,13 +7021,12 @@ int yaffs_GetAttributes(yaffs_Object * o
 	attr->ia_valid = valid;
 
 	return YAFFS_OK;
-
 }
 
 #endif
 
 #if 0
-int yaffs_DumpObject(yaffs_Object * obj)
+int yaffs_DumpObject(yaffs_Object *obj)
 {
 	YCHAR name[257];
 
@@ -6951,7 +7037,7 @@ int yaffs_DumpObject(yaffs_Object * obj)
 	   ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
 	    " chunk %d type %d size %d\n"
 	    TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
-	   obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId,
+	   obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
 	   yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
 
 	return YAFFS_OK;
@@ -6960,7 +7046,7 @@ int yaffs_DumpObject(yaffs_Object * obj)
 
 /*---------------------------- Initialisation code -------------------------------------- */
 
-static int yaffs_CheckDevFunctions(const yaffs_Device * dev)
+static int yaffs_CheckDevFunctions(const yaffs_Device *dev)
 {
 
 	/* Common functions, gotta have */
@@ -7011,7 +7097,7 @@ static int yaffs_CreateInitialDirectorie
 	    yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
 				      YAFFS_LOSTNFOUND_MODE | S_IFDIR);
 
-	if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){
+	if (dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir) {
 		yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
 		return YAFFS_OK;
 	}
@@ -7019,7 +7105,7 @@ static int yaffs_CreateInitialDirectorie
 	return YAFFS_FAIL;
 }
 
-int yaffs_GutsInitialise(yaffs_Device * dev)
+int yaffs_GutsInitialise(yaffs_Device *dev)
 {
 	int init_failed = 0;
 	unsigned x;
@@ -7040,6 +7126,8 @@ int yaffs_GutsInitialise(yaffs_Device *
 	dev->chunkOffset = 0;
 	dev->nFreeChunks = 0;
 
+	dev->gcBlock = -1;
+
 	if (dev->startBlock == 0) {
 		dev->internalStartBlock = dev->startBlock + 1;
 		dev->internalEndBlock = dev->endBlock + 1;
@@ -7049,18 +7137,18 @@ int yaffs_GutsInitialise(yaffs_Device *
 
 	/* Check geometry parameters. */
 
-	if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) ||
-	    (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) ||
+	if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
+	    (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) ||
+	    (dev->inbandTags && !dev->isYaffs2) ||
 	     dev->nChunksPerBlock < 2 ||
 	     dev->nReservedBlocks < 2 ||
 	     dev->internalStartBlock <= 0 ||
 	     dev->internalEndBlock <= 0 ||
-	     dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)	// otherwise it is too small
-	    ) {
+	     dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2)) {	/* otherwise it is too small */
 		T(YAFFS_TRACE_ALWAYS,
 		  (TSTR
-		   ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s "
-		    TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : ""));
+		   ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
+		    TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags));
 		return YAFFS_FAIL;
 	}
 
@@ -7070,6 +7158,12 @@ int yaffs_GutsInitialise(yaffs_Device *
 		return YAFFS_FAIL;
 	}
 
+	/* Sort out space for inband tags, if required */
+	if (dev->inbandTags)
+		dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
+	else
+		dev->nDataBytesPerChunk = dev->totalBytesPerChunk;
+
 	/* Got the right mix of functions? */
 	if (!yaffs_CheckDevFunctions(dev)) {
 		/* Function missing */
@@ -7097,31 +7191,18 @@ int yaffs_GutsInitialise(yaffs_Device *
 
 	dev->isMounted = 1;
 
-
-
 	/* OK now calculate a few things for the device */
 
 	/*
 	 *  Calculate all the chunk size manipulation numbers:
 	 */
-	 /* Start off assuming it is a power of 2 */
-	 dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk);
-	 dev->chunkMask = (1<<dev->chunkShift) - 1;
-
-	 if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){
-	 	/* Yes it is a power of 2, disable crumbs */
-		dev->crumbMask = 0;
-		dev->crumbShift = 0;
-		dev->crumbsPerChunk = 0;
-	 } else {
-	 	/* Not a power of 2, use crumbs instead */
-		dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart));
-		dev->crumbMask = (1<<dev->crumbShift)-1;
-		dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift);
-		dev->chunkShift = 0;
-		dev->chunkMask = 0;
-	}
-
+	x = dev->nDataBytesPerChunk;
+	/* We always use dev->chunkShift and dev->chunkDiv */
+	dev->chunkShift = Shifts(x);
+	x >>= dev->chunkShift;
+	dev->chunkDiv = x;
+	/* We only use chunk mask if chunkDiv is 1 */
+	dev->chunkMask = (1<<dev->chunkShift) - 1;
 
 	/*
 	 * Calculate chunkGroupBits.
@@ -7133,16 +7214,15 @@ int yaffs_GutsInitialise(yaffs_Device *
 	bits = ShiftsGE(x);
 
 	/* Set up tnode width if wide tnodes are enabled. */
-	if(!dev->wideTnodesDisabled){
+	if (!dev->wideTnodesDisabled) {
 		/* bits must be even so that we end up with 32-bit words */
-		if(bits & 1)
+		if (bits & 1)
 			bits++;
-		if(bits < 16)
+		if (bits < 16)
 			dev->tnodeWidth = 16;
 		else
 			dev->tnodeWidth = bits;
-	}
-	else
+	} else
 		dev->tnodeWidth = 16;
 
 	dev->tnodeMask = (1<<dev->tnodeWidth)-1;
@@ -7193,7 +7273,7 @@ int yaffs_GutsInitialise(yaffs_Device *
 	dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
 
 	/* Initialise temporary buffers and caches. */
-	if(!yaffs_InitialiseTempBuffers(dev))
+	if (!yaffs_InitialiseTempBuffers(dev))
 		init_failed = 1;
 
 	dev->srCache = NULL;
@@ -7203,25 +7283,26 @@ int yaffs_GutsInitialise(yaffs_Device *
 	if (!init_failed &&
 	    dev->nShortOpCaches > 0) {
 		int i;
-		__u8 *buf;
+		void *buf;
 		int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
 
-		if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) {
+		if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES)
 			dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
-		}
 
-		buf = dev->srCache =  YMALLOC(srCacheBytes);
+		dev->srCache =  YMALLOC(srCacheBytes);
 
-		if(dev->srCache)
-			memset(dev->srCache,0,srCacheBytes);
+		buf = (__u8 *) dev->srCache;
+
+		if (dev->srCache)
+			memset(dev->srCache, 0, srCacheBytes);
 
 		for (i = 0; i < dev->nShortOpCaches && buf; i++) {
 			dev->srCache[i].object = NULL;
 			dev->srCache[i].lastUse = 0;
 			dev->srCache[i].dirty = 0;
-			dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk);
+			dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk);
 		}
-		if(!buf)
+		if (!buf)
 			init_failed = 1;
 
 		dev->srLastUse = 0;
@@ -7229,29 +7310,30 @@ int yaffs_GutsInitialise(yaffs_Device *
 
 	dev->cacheHits = 0;
 
-	if(!init_failed){
+	if (!init_failed) {
 		dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
-		if(!dev->gcCleanupList)
+		if (!dev->gcCleanupList)
 			init_failed = 1;
 	}
 
-	if (dev->isYaffs2) {
+	if (dev->isYaffs2)
 		dev->useHeaderFileSize = 1;
-	}
-	if(!init_failed && !yaffs_InitialiseBlocks(dev))
+
+	if (!init_failed && !yaffs_InitialiseBlocks(dev))
 		init_failed = 1;
 
 	yaffs_InitialiseTnodes(dev);
 	yaffs_InitialiseObjects(dev);
 
-	if(!init_failed && !yaffs_CreateInitialDirectories(dev))
+	if (!init_failed && !yaffs_CreateInitialDirectories(dev))
 		init_failed = 1;
 
 
-	if(!init_failed){
+	if (!init_failed) {
 		/* Now scan the flash. */
 		if (dev->isYaffs2) {
-			if(yaffs_CheckpointRestore(dev)) {
+			if (yaffs_CheckpointRestore(dev)) {
+				yaffs_CheckObjectDetailsLoaded(dev->rootDir);
 				T(YAFFS_TRACE_ALWAYS,
 				  (TSTR("yaffs: restored from checkpoint" TENDSTR)));
 			} else {
@@ -7273,24 +7355,25 @@ int yaffs_GutsInitialise(yaffs_Device *
 				dev->nBackgroundDeletions = 0;
 				dev->oldestDirtySequence = 0;
 
-				if(!init_failed && !yaffs_InitialiseBlocks(dev))
+				if (!init_failed && !yaffs_InitialiseBlocks(dev))
 					init_failed = 1;
 
 				yaffs_InitialiseTnodes(dev);
 				yaffs_InitialiseObjects(dev);
 
-				if(!init_failed && !yaffs_CreateInitialDirectories(dev))
+				if (!init_failed && !yaffs_CreateInitialDirectories(dev))
 					init_failed = 1;
 
-				if(!init_failed && !yaffs_ScanBackwards(dev))
+				if (!init_failed && !yaffs_ScanBackwards(dev))
 					init_failed = 1;
 			}
-		}else
-			if(!yaffs_Scan(dev))
+		} else if (!yaffs_Scan(dev))
 				init_failed = 1;
+
+		yaffs_StripDeletedObjects(dev);
 	}
 
-	if(init_failed){
+	if (init_failed) {
 		/* Clean up the mess */
 		T(YAFFS_TRACE_TRACING,
 		  (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
@@ -7318,7 +7401,7 @@ int yaffs_GutsInitialise(yaffs_Device *
 
 }
 
-void yaffs_Deinitialise(yaffs_Device * dev)
+void yaffs_Deinitialise(yaffs_Device *dev)
 {
 	if (dev->isMounted) {
 		int i;
@@ -7330,7 +7413,7 @@ void yaffs_Deinitialise(yaffs_Device * d
 		    dev->srCache) {
 
 			for (i = 0; i < dev->nShortOpCaches; i++) {
-				if(dev->srCache[i].data)
+				if (dev->srCache[i].data)
 					YFREE(dev->srCache[i].data);
 				dev->srCache[i].data = NULL;
 			}
@@ -7341,16 +7424,17 @@ void yaffs_Deinitialise(yaffs_Device * d
 
 		YFREE(dev->gcCleanupList);
 
-		for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+		for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
 			YFREE(dev->tempBuffer[i].buffer);
-		}
 
 		dev->isMounted = 0;
-	}
 
+		if (dev->deinitialiseNAND)
+			dev->deinitialiseNAND(dev);
+	}
 }
 
-static int yaffs_CountFreeChunks(yaffs_Device * dev)
+static int yaffs_CountFreeChunks(yaffs_Device *dev)
 {
 	int nFree;
 	int b;
@@ -7358,7 +7442,7 @@ static int yaffs_CountFreeChunks(yaffs_D
 	yaffs_BlockInfo *blk;
 
 	for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
-	     b++) {
+			b++) {
 		blk = yaffs_GetBlockInfo(dev, b);
 
 		switch (blk->blockState) {
@@ -7373,19 +7457,19 @@ static int yaffs_CountFreeChunks(yaffs_D
 		default:
 			break;
 		}
-
 	}
 
 	return nFree;
 }
 
-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev)
+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev)
 {
 	/* This is what we report to the outside world */
 
 	int nFree;
 	int nDirtyCacheChunks;
 	int blocksForCheckpoint;
+	int i;
 
 #if 1
 	nFree = dev->nFreeChunks;
@@ -7397,12 +7481,9 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
 
 	/* Now count the number of dirty chunks in the cache and subtract those */
 
-	{
-		int i;
-		for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
-			if (dev->srCache[i].dirty)
-				nDirtyCacheChunks++;
-		}
+	for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
+		if (dev->srCache[i].dirty)
+			nDirtyCacheChunks++;
 	}
 
 	nFree -= nDirtyCacheChunks;
@@ -7410,8 +7491,8 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
 	nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
 
 	/* Now we figure out how much to reserve for the checkpoint and report that... */
-	blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
-	if(blocksForCheckpoint < 0)
+	blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+	if (blocksForCheckpoint < 0)
 		blocksForCheckpoint = 0;
 
 	nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
@@ -7425,12 +7506,12 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
 
 static int yaffs_freeVerificationFailures;
 
-static void yaffs_VerifyFreeChunks(yaffs_Device * dev)
+static void yaffs_VerifyFreeChunks(yaffs_Device *dev)
 {
 	int counted;
 	int difference;
 
-	if(yaffs_SkipVerification(dev))
+	if (yaffs_SkipVerification(dev))
 		return;
 
 	counted = yaffs_CountFreeChunks(dev);
@@ -7447,23 +7528,25 @@ static void yaffs_VerifyFreeChunks(yaffs
 
 /*---------------------------------------- YAFFS test code ----------------------*/
 
-#define yaffs_CheckStruct(structure,syze, name) \
-           if(sizeof(structure) != syze) \
-	       { \
-	         T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\
-		 name,syze,sizeof(structure))); \
-	         return YAFFS_FAIL; \
-		}
+#define yaffs_CheckStruct(structure, syze, name) \
+	do { \
+		if (sizeof(structure) != syze) { \
+			T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
+				name, syze, sizeof(structure))); \
+			return YAFFS_FAIL; \
+		} \
+	} while (0)
 
 static int yaffs_CheckStructures(void)
 {
-/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */
-/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */
-/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */
+/*      yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
+/*      yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
+/*      yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
 #ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
-	yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
+	yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
 #endif
-	    yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
-
-	    return YAFFS_OK;
+#ifndef CONFIG_YAFFS_WINCE
+	yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
+#endif
+	return YAFFS_OK;
 }
--- a/fs/yaffs2/yaffs_guts.h
+++ b/fs/yaffs2/yaffs_guts.h
@@ -90,7 +90,7 @@
 
 #define YAFFS_MAX_SHORT_OP_CACHES	20
 
-#define YAFFS_N_TEMP_BUFFERS		4
+#define YAFFS_N_TEMP_BUFFERS		6
 
 /* We limit the number attempts at sucessfully saving a chunk of data.
  * Small-page devices have 32 pages per block; large-page devices have 64.
@@ -108,6 +108,9 @@
 #define YAFFS_LOWEST_SEQUENCE_NUMBER	0x00001000
 #define YAFFS_HIGHEST_SEQUENCE_NUMBER	0xEFFFFF00
 
+/* Special sequence number for bad block that failed to be marked bad */
+#define YAFFS_SEQUENCE_BAD_BLOCK	0xFFFF0000
+
 /* ChunkCache is used for short read/write operations.*/
 typedef struct {
 	struct yaffs_ObjectStruct *object;
@@ -134,11 +137,10 @@ typedef struct {
 typedef struct {
 	unsigned chunkId:20;
 	unsigned serialNumber:2;
-	unsigned byteCount:10;
+	unsigned byteCountLSB:10;
 	unsigned objectId:18;
 	unsigned ecc:12;
-	unsigned unusedStuff:2;
-
+	unsigned byteCountMSB:2;
 } yaffs_Tags;
 
 typedef union {
@@ -277,13 +279,13 @@ typedef struct {
 
 	int softDeletions:10;	/* number of soft deleted pages */
 	int pagesInUse:10;	/* number of pages in use */
-	yaffs_BlockState blockState:4;	/* One of the above block states */
+	unsigned blockState:4;	/* One of the above block states. NB use unsigned because enum is sometimes an int */
 	__u32 needsRetiring:1;	/* Data has failed on this block, need to get valid data off */
-                        	/* and retire the block. */
-	__u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
-	__u32 gcPrioritise: 1; 	/* An ECC check or blank check has failed on this block.
+				/* and retire the block. */
+	__u32 skipErasedCheck:1; /* If this is set we can skip the erased check on this block */
+	__u32 gcPrioritise:1; 	/* An ECC check or blank check has failed on this block.
 				   It should be prioritised for GC */
-        __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
+	__u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
 
 #ifdef CONFIG_YAFFS_YAFFS2
 	__u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
@@ -300,11 +302,11 @@ typedef struct {
 
 	/* Apply to everything  */
 	int parentObjectId;
-	__u16 sum__NoLongerUsed;	/* checksum of name. No longer used */
+	__u16 sum__NoLongerUsed;        /* checksum of name. No longer used */
 	YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
 
-	/* Thes following apply to directories, files, symlinks - not hard links */
-	__u32 yst_mode;		/* protection */
+	/* The following apply to directories, files, symlinks - not hard links */
+	__u32 yst_mode;         /* protection */
 
 #ifdef CONFIG_YAFFS_WINCE
 	__u32 notForWinCE[5];
@@ -331,11 +333,14 @@ typedef struct {
 	__u32 win_ctime[2];
 	__u32 win_atime[2];
 	__u32 win_mtime[2];
-	__u32 roomToGrow[4];
 #else
-	__u32 roomToGrow[10];
+	__u32 roomToGrow[6];
+
 #endif
+	__u32 inbandShadowsObject;
+	__u32 inbandIsShrink;
 
+	__u32 reservedSpace[2];
 	int shadowsObject;	/* This object header shadows the specified object if > 0 */
 
 	/* isShrink applies to object headers written when we shrink the file (ie resize) */
@@ -381,7 +386,7 @@ typedef struct {
 } yaffs_FileStructure;
 
 typedef struct {
-	struct list_head children;	/* list of child links */
+	struct ylist_head children;     /* list of child links */
 } yaffs_DirectoryStructure;
 
 typedef struct {
@@ -418,23 +423,24 @@ struct yaffs_ObjectStruct {
 				 * still in the inode cache. Free of object is defered.
 				 * until the inode is released.
 				 */
+	__u8 beingCreated:1;	/* This object is still being created so skip some checks. */
 
 	__u8 serial;		/* serial number of chunk in NAND. Cached here */
 	__u16 sum;		/* sum of the name to speed searching */
 
-	struct yaffs_DeviceStruct *myDev;	/* The device I'm on */
+	struct yaffs_DeviceStruct *myDev;       /* The device I'm on */
 
-	struct list_head hashLink;	/* list of objects in this hash bucket */
+	struct ylist_head hashLink;     /* list of objects in this hash bucket */
 
-	struct list_head hardLinks;	/* all the equivalent hard linked objects */
+	struct ylist_head hardLinks;    /* all the equivalent hard linked objects */
 
 	/* directory structure stuff */
 	/* also used for linking up the free list */
 	struct yaffs_ObjectStruct *parent;
-	struct list_head siblings;
+	struct ylist_head siblings;
 
 	/* Where's my object header in NAND? */
-	int chunkId;
+	int hdrChunk;
 
 	int nDataChunks;	/* Number of data chunks attached to the file. */
 
@@ -485,7 +491,7 @@ struct yaffs_ObjectList_struct {
 typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
 
 typedef struct {
-	struct list_head list;
+	struct ylist_head list;
 	int count;
 } yaffs_ObjectBucket;
 
@@ -495,11 +501,10 @@ typedef struct {
  */
 
 typedef struct {
-        int structType;
+	int structType;
 	__u32 objectId;
 	__u32 parentId;
-	int chunkId;
-
+	int hdrChunk;
 	yaffs_ObjectType variantType:3;
 	__u8 deleted:1;
 	__u8 softDeleted:1;
@@ -511,8 +516,7 @@ typedef struct {
 
 	int nDataChunks;
 	__u32 fileSizeOrEquivalentObjectId;
-
-}yaffs_CheckpointObject;
+} yaffs_CheckpointObject;
 
 /*--------------------- Temporary buffers ----------------
  *
@@ -528,13 +532,13 @@ typedef struct {
 /*----------------- Device ---------------------------------*/
 
 struct yaffs_DeviceStruct {
-	struct list_head devList;
+	struct ylist_head devList;
 	const char *name;
 
 	/* Entry parameters set up way early. Yaffs sets up the rest.*/
 	int nDataBytesPerChunk;	/* Should be a power of 2 >= 512 */
 	int nChunksPerBlock;	/* does not need to be a power of 2 */
-	int nBytesPerSpare;	/* spare area size */
+	int spareBytesPerChunk;	/* spare area size */
 	int startBlock;		/* Start block we're allowed to use */
 	int endBlock;		/* End block we're allowed to use */
 	int nReservedBlocks;	/* We want this tuneable so that we can reduce */
@@ -544,9 +548,7 @@ struct yaffs_DeviceStruct {
 	/* Stuff used by the shared space checkpointing mechanism */
 	/* If this value is zero, then this mechanism is disabled */
 
-	int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
-
-
+/*	int nCheckpointReservedBlocks; */ /* Blocks to reserve for checkpoint data */
 
 
 	int nShortOpCaches;	/* If <= 0, then short op caching is disabled, else
@@ -560,30 +562,31 @@ struct yaffs_DeviceStruct {
 	void *genericDevice;	/* Pointer to device context
 				 * On an mtd this holds the mtd pointer.
 				 */
-        void *superBlock;
+	void *superBlock;
 
 	/* NAND access functions (Must be set before calling YAFFS)*/
 
-	int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
-				 int chunkInNAND, const __u8 * data,
-				 const yaffs_Spare * spare);
-	int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
-				  int chunkInNAND, __u8 * data,
-				  yaffs_Spare * spare);
-	int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
-				 int blockInNAND);
-	int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
+	int (*writeChunkToNAND) (struct yaffs_DeviceStruct *dev,
+					int chunkInNAND, const __u8 *data,
+					const yaffs_Spare *spare);
+	int (*readChunkFromNAND) (struct yaffs_DeviceStruct *dev,
+					int chunkInNAND, __u8 *data,
+					yaffs_Spare *spare);
+	int (*eraseBlockInNAND) (struct yaffs_DeviceStruct *dev,
+					int blockInNAND);
+	int (*initialiseNAND) (struct yaffs_DeviceStruct *dev);
+	int (*deinitialiseNAND) (struct yaffs_DeviceStruct *dev);
 
 #ifdef CONFIG_YAFFS_YAFFS2
-	int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
-					 int chunkInNAND, const __u8 * data,
-					 const yaffs_ExtendedTags * tags);
-	int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev,
-					  int chunkInNAND, __u8 * data,
-					  yaffs_ExtendedTags * tags);
-	int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo);
-	int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo,
-			       yaffs_BlockState * state, int *sequenceNumber);
+	int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct *dev,
+					 int chunkInNAND, const __u8 *data,
+					 const yaffs_ExtendedTags *tags);
+	int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct *dev,
+					  int chunkInNAND, __u8 *data,
+					  yaffs_ExtendedTags *tags);
+	int (*markNANDBlockBad) (struct yaffs_DeviceStruct *dev, int blockNo);
+	int (*queryNANDBlock) (struct yaffs_DeviceStruct *dev, int blockNo,
+			       yaffs_BlockState *state, __u32 *sequenceNumber);
 #endif
 
 	int isYaffs2;
@@ -595,10 +598,12 @@ struct yaffs_DeviceStruct {
 	void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
 
 	/* Callback to mark the superblock dirsty */
-	void (*markSuperBlockDirty)(void * superblock);
+	void (*markSuperBlockDirty)(void *superblock);
 
 	int wideTnodesDisabled; /* Set to disable wide tnodes */
 
+	YCHAR *pathDividers;	/* String of legal path dividers */
+
 
 	/* End of stuff that must be set before initialisation. */
 
@@ -615,16 +620,14 @@ struct yaffs_DeviceStruct {
 	__u32 tnodeWidth;
 	__u32 tnodeMask;
 
-	/* Stuff to support various file offses to chunk/offset translations */
-	/* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
-	__u32 crumbMask;
-	__u32 crumbShift;
-	__u32 crumbsPerChunk;
-
-	/* Straight shifting for nDataBytesPerChunk being a power of 2 */
-	__u32 chunkShift;
-	__u32 chunkMask;
-
+	/* Stuff for figuring out file offset to chunk conversions */
+	__u32 chunkShift; /* Shift value */
+	__u32 chunkDiv;   /* Divisor after shifting: 1 for power-of-2 sizes */
+	__u32 chunkMask;  /* Mask to use for power-of-2 case */
+
+	/* Stuff to handle inband tags */
+	int inbandTags;
+	__u32 totalBytesPerChunk;
 
 #ifdef __KERNEL__
 
@@ -633,7 +636,7 @@ struct yaffs_DeviceStruct {
 	__u8 *spareBuffer;	/* For mtdif2 use. Don't know the size of the buffer
 				 * at compile time so we have to allocate it.
 				 */
-	void (*putSuperFunc) (struct super_block * sb);
+	void (*putSuperFunc) (struct super_block *sb);
 #endif
 
 	int isMounted;
@@ -663,6 +666,8 @@ struct yaffs_DeviceStruct {
 	__u32 checkpointSum;
 	__u32 checkpointXor;
 
+	int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */
+
 	/* Block Info */
 	yaffs_BlockInfo *blockInfo;
 	__u8 *chunkBits;	/* bitmap of chunks in use */
@@ -684,11 +689,15 @@ struct yaffs_DeviceStruct {
 	yaffs_TnodeList *allocatedTnodeList;
 
 	int isDoingGC;
+	int gcBlock;
+	int gcChunk;
 
 	int nObjectsCreated;
 	yaffs_Object *freeObjects;
 	int nFreeObjects;
 
+	int nHardLinks;
+
 	yaffs_ObjectList *allocatedObjectList;
 
 	yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
@@ -745,8 +754,10 @@ struct yaffs_DeviceStruct {
 	int nBackgroundDeletions;	/* Count of background deletions. */
 
 
+	/* Temporary buffer management */
 	yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
 	int maxTemp;
+	int tempInUse;
 	int unmanagedTempAllocations;
 	int unmanagedTempDeallocations;
 
@@ -758,9 +769,9 @@ struct yaffs_DeviceStruct {
 
 typedef struct yaffs_DeviceStruct yaffs_Device;
 
-/* The static layout of bllock usage etc is stored in the super block header */
+/* The static layout of block usage etc is stored in the super block header */
 typedef struct {
-        int StructType;
+	int StructType;
 	int version;
 	int checkpointStartBlock;
 	int checkpointEndBlock;
@@ -773,7 +784,7 @@ typedef struct {
  * must be preserved over unmount/mount cycles.
  */
 typedef struct {
-        int structType;
+	int structType;
 	int nErasedBlocks;
 	int allocationBlock;	/* Current block being allocated off */
 	__u32 allocationPage;
@@ -791,57 +802,45 @@ typedef struct {
 
 
 typedef struct {
-    int structType;
-    __u32 magic;
-    __u32 version;
-    __u32 head;
+	int structType;
+	__u32 magic;
+	__u32 version;
+	__u32 head;
 } yaffs_CheckpointValidity;
 
-/* Function to manipulate block info */
-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
-{
-	if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
-		T(YAFFS_TRACE_ERROR,
-		  (TSTR
-		   ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
-		   blk));
-		YBUG();
-	}
-	return &dev->blockInfo[blk - dev->internalStartBlock];
-}
 
 /*----------------------- YAFFS Functions -----------------------*/
 
-int yaffs_GutsInitialise(yaffs_Device * dev);
-void yaffs_Deinitialise(yaffs_Device * dev);
+int yaffs_GutsInitialise(yaffs_Device *dev);
+void yaffs_Deinitialise(yaffs_Device *dev);
 
-int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev);
+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev);
 
-int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
-		       yaffs_Object * newDir, const YCHAR * newName);
+int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName,
+		       yaffs_Object *newDir, const YCHAR *newName);
 
-int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name);
-int yaffs_DeleteFile(yaffs_Object * obj);
+int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name);
+int yaffs_DeleteObject(yaffs_Object *obj);
 
-int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize);
-int yaffs_GetObjectFileLength(yaffs_Object * obj);
-int yaffs_GetObjectInode(yaffs_Object * obj);
-unsigned yaffs_GetObjectType(yaffs_Object * obj);
-int yaffs_GetObjectLinkCount(yaffs_Object * obj);
+int yaffs_GetObjectName(yaffs_Object *obj, YCHAR *name, int buffSize);
+int yaffs_GetObjectFileLength(yaffs_Object *obj);
+int yaffs_GetObjectInode(yaffs_Object *obj);
+unsigned yaffs_GetObjectType(yaffs_Object *obj);
+int yaffs_GetObjectLinkCount(yaffs_Object *obj);
 
-int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
-int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
+int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr);
+int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr);
 
 /* File operations */
-int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
-			   int nBytes);
-int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
-			  int nBytes, int writeThrough);
-int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
-
-yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
-			      __u32 mode, __u32 uid, __u32 gid);
-int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
+int yaffs_ReadDataFromFile(yaffs_Object *obj, __u8 *buffer, loff_t offset,
+				int nBytes);
+int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, loff_t offset,
+				int nBytes, int writeThrough);
+int yaffs_ResizeFile(yaffs_Object *obj, loff_t newSize);
+
+yaffs_Object *yaffs_MknodFile(yaffs_Object *parent, const YCHAR *name,
+				__u32 mode, __u32 uid, __u32 gid);
+int yaffs_FlushFile(yaffs_Object *obj, int updateTime);
 
 /* Flushing and checkpointing */
 void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
@@ -850,33 +849,33 @@ int yaffs_CheckpointSave(yaffs_Device *d
 int yaffs_CheckpointRestore(yaffs_Device *dev);
 
 /* Directory operations */
-yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
-				   __u32 mode, __u32 uid, __u32 gid);
-yaffs_Object *yaffs_FindObjectByName(yaffs_Object * theDir, const YCHAR * name);
-int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
+yaffs_Object *yaffs_MknodDirectory(yaffs_Object *parent, const YCHAR *name,
+				__u32 mode, __u32 uid, __u32 gid);
+yaffs_Object *yaffs_FindObjectByName(yaffs_Object *theDir, const YCHAR *name);
+int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,
 				   int (*fn) (yaffs_Object *));
 
-yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number);
+yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev, __u32 number);
 
 /* Link operations */
-yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
-			 yaffs_Object * equivalentObject);
+yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name,
+			 yaffs_Object *equivalentObject);
 
-yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj);
+yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj);
 
 /* Symlink operations */
-yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
+yaffs_Object *yaffs_MknodSymLink(yaffs_Object *parent, const YCHAR *name,
 				 __u32 mode, __u32 uid, __u32 gid,
-				 const YCHAR * alias);
-YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj);
+				 const YCHAR *alias);
+YCHAR *yaffs_GetSymlinkAlias(yaffs_Object *obj);
 
 /* Special inodes (fifos, sockets and devices) */
-yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
+yaffs_Object *yaffs_MknodSpecial(yaffs_Object *parent, const YCHAR *name,
 				 __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
 
 /* Special directories */
-yaffs_Object *yaffs_Root(yaffs_Device * dev);
-yaffs_Object *yaffs_LostNFound(yaffs_Device * dev);
+yaffs_Object *yaffs_Root(yaffs_Device *dev);
+yaffs_Object *yaffs_LostNFound(yaffs_Device *dev);
 
 #ifdef CONFIG_YAFFS_WINCE
 /* CONFIG_YAFFS_WINCE special stuff */
@@ -885,18 +884,21 @@ void yfsd_WinFileTimeNow(__u32 target[2]
 
 #ifdef __KERNEL__
 
-void yaffs_HandleDeferedFree(yaffs_Object * obj);
+void yaffs_HandleDeferedFree(yaffs_Object *obj);
 #endif
 
 /* Debug dump  */
-int yaffs_DumpObject(yaffs_Object * obj);
+int yaffs_DumpObject(yaffs_Object *obj);
 
-void yaffs_GutsTest(yaffs_Device * dev);
+void yaffs_GutsTest(yaffs_Device *dev);
 
 /* A few useful functions */
-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
-void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn);
-int yaffs_CheckFF(__u8 * buffer, int nBytes);
+void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
+void yaffs_DeleteChunk(yaffs_Device *dev, int chunkId, int markNAND, int lyn);
+int yaffs_CheckFF(__u8 *buffer, int nBytes);
 void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
 
+__u8 *yaffs_GetTempBuffer(yaffs_Device *dev, int lineNo);
+void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo);
+
 #endif
--- a/fs/yaffs2/yaffs_mtdif1.c
+++ b/fs/yaffs2/yaffs_mtdif1.c
@@ -26,7 +26,7 @@
 #include "yportenv.h"
 #include "yaffs_guts.h"
 #include "yaffs_packedtags1.h"
-#include "yaffs_tagscompat.h"	// for yaffs_CalcTagsECC
+#include "yaffs_tagscompat.h"	/* for yaffs_CalcTagsECC */
 
 #include "linux/kernel.h"
 #include "linux/version.h"
@@ -34,9 +34,9 @@
 #include "linux/mtd/mtd.h"
 
 /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 
-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $";
+const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.10 2009-03-09 07:41:10 charles Exp $";
 
 #ifndef CONFIG_YAFFS_9BYTE_TAGS
 # define YTAG1_SIZE 8
@@ -89,9 +89,9 @@ static struct nand_ecclayout nand_oob_16
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
 int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
-	int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
+	int chunkInNAND, const __u8 *data, const yaffs_ExtendedTags *etags)
 {
-	struct mtd_info * mtd = dev->genericDevice;
+	struct mtd_info *mtd = dev->genericDevice;
 	int chunkBytes = dev->nDataBytesPerChunk;
 	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
 	struct mtd_oob_ops ops;
@@ -146,7 +146,7 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya
 
 /* Return with empty ExtendedTags but add eccResult.
  */
-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
+static int rettags(yaffs_ExtendedTags *etags, int eccResult, int retval)
 {
 	if (etags) {
 		memset(etags, 0, sizeof(*etags));
@@ -169,9 +169,9 @@ static int rettags(yaffs_ExtendedTags *
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
 int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
-	int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
+	int chunkInNAND, __u8 *data, yaffs_ExtendedTags *etags)
 {
-	struct mtd_info * mtd = dev->genericDevice;
+	struct mtd_info *mtd = dev->genericDevice;
 	int chunkBytes = dev->nDataBytesPerChunk;
 	loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
 	int eccres = YAFFS_ECC_RESULT_NO_ERROR;
@@ -189,7 +189,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
 	ops.datbuf = data;
 	ops.oobbuf = (__u8 *)&pt1;
 
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
+#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
 	/* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
 	 * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
 	 */
@@ -284,11 +284,11 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
  */
 int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
 {
-	struct mtd_info * mtd = dev->genericDevice;
+	struct mtd_info *mtd = dev->genericDevice;
 	int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
 	int retval;
 
-	yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
+	yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo);
 
 	retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
 	return (retval) ? YAFFS_FAIL : YAFFS_OK;
@@ -298,7 +298,7 @@ int nandmtd1_MarkNANDBlockBad(struct yaf
  *
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
+static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
 {
 	/* 2.6.18 has mtd->ecclayout->oobavail */
 	/* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
@@ -323,10 +323,11 @@ static int nandmtd1_TestPrerequists(stru
  * Always returns YAFFS_OK.
  */
 int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-	yaffs_BlockState * pState, int *pSequenceNumber)
+	yaffs_BlockState *pState, __u32 *pSequenceNumber)
 {
-	struct mtd_info * mtd = dev->genericDevice;
+	struct mtd_info *mtd = dev->genericDevice;
 	int chunkNo = blockNo * dev->nChunksPerBlock;
+	loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
 	yaffs_ExtendedTags etags;
 	int state = YAFFS_BLOCK_STATE_DEAD;
 	int seqnum = 0;
@@ -335,21 +336,22 @@ int nandmtd1_QueryNANDBlock(struct yaffs
 	/* We don't yet have a good place to test for MTD config prerequists.
 	 * Do it here as we are called during the initial scan.
 	 */
-	if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
+	if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK)
 		return YAFFS_FAIL;
-	}
 
 	retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+	etags.blockBad = (mtd->block_isbad)(mtd, addr);
 	if (etags.blockBad) {
 		yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
-			"block %d is marked bad", blockNo);
+			"block %d is marked bad\n", blockNo);
 		state = YAFFS_BLOCK_STATE_DEAD;
-	}
-	else if (etags.chunkUsed) {
+	} else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
+		/* bad tags, need to look more closely */
+		state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+	} else if (etags.chunkUsed) {
 		state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
 		seqnum = etags.sequenceNumber;
-	}
-	else {
+	} else {
 		state = YAFFS_BLOCK_STATE_EMPTY;
 	}
 
@@ -360,4 +362,4 @@ int nandmtd1_QueryNANDBlock(struct yaffs
 	return YAFFS_OK;
 }
 
-#endif /*KERNEL_VERSION*/
+#endif /*MTD_VERSION*/
--- a/fs/yaffs2/yaffs_mtdif1.h
+++ b/fs/yaffs2/yaffs_mtdif1.h
@@ -14,15 +14,15 @@
 #ifndef __YAFFS_MTDIF1_H__
 #define __YAFFS_MTDIF1_H__
 
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
-	const __u8 * data, const yaffs_ExtendedTags * tags);
+int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+	const __u8 *data, const yaffs_ExtendedTags *tags);
 
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
-	__u8 * data, yaffs_ExtendedTags * tags);
+int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+	__u8 *data, yaffs_ExtendedTags *tags);
 
 int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
 
 int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-	yaffs_BlockState * state, int *sequenceNumber);
+	yaffs_BlockState *state, __u32 *sequenceNumber);
 
 #endif
--- a/fs/yaffs2/yaffs_mtdif2.c
+++ b/fs/yaffs2/yaffs_mtdif2.c
@@ -14,7 +14,7 @@
 /* mtd interface for YAFFS2 */
 
 const char *yaffs_mtdif2_c_version =
-    "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $";
+	"$Id: yaffs_mtdif2.c,v 1.23 2009-03-06 17:20:53 wookey Exp $";
 
 #include "yportenv.h"
 
@@ -27,19 +27,23 @@ const char *yaffs_mtdif2_c_version =
 
 #include "yaffs_packedtags2.h"
 
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
-				      const __u8 * data,
-				      const yaffs_ExtendedTags * tags)
+/* NB For use with inband tags....
+ * We assume that the data buffer is of size totalBytersPerChunk so that we can also
+ * use it to load the tags.
+ */
+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+				      const __u8 *data,
+				      const yaffs_ExtendedTags *tags)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #else
 	size_t dummy;
 #endif
 	int retval = 0;
 
-	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+	loff_t addr;
 
 	yaffs_PackedTags2 pt;
 
@@ -48,46 +52,40 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
 	   ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
 	    TENDSTR), chunkInNAND, data, tags));
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-	if (tags)
-		yaffs_PackTags2(&pt, tags);
-	else
-		BUG(); /* both tags and data should always be present */
 
-	if (data) {
-		ops.mode = MTD_OOB_AUTO;
-		ops.ooblen = sizeof(pt);
-		ops.len = dev->nDataBytesPerChunk;
-		ops.ooboffs = 0;
-		ops.datbuf = (__u8 *)data;
-		ops.oobbuf = (void *)&pt;
-		retval = mtd->write_oob(mtd, addr, &ops);
+	addr  = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
+
+	/* For yaffs2 writing there must be both data and tags.
+	 * If we're using inband tags, then the tags are stuffed into
+	 * the end of the data buffer.
+	 */
+	if (!data || !tags)
+		BUG();
+	else if (dev->inbandTags) {
+		yaffs_PackedTags2TagsPart *pt2tp;
+		pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);
+		yaffs_PackTags2TagsPart(pt2tp, tags);
 	} else
-		BUG(); /* both tags and data should always be present */
-#else
-	if (tags) {
 		yaffs_PackTags2(&pt, tags);
-	}
 
-	if (data && tags) {
-		if (dev->useNANDECC)
-			retval =
-			    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					   &dummy, data, (__u8 *) & pt, NULL);
-		else
-			retval =
-			    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					   &dummy, data, (__u8 *) & pt, NULL);
-	} else {
-		if (data)
-			retval =
-			    mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
-				       data);
-		if (tags)
-			retval =
-			    mtd->write_oob(mtd, addr, mtd->oobsize, &dummy,
-					   (__u8 *) & pt);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+	ops.mode = MTD_OOB_AUTO;
+	ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt);
+	ops.len = dev->totalBytesPerChunk;
+	ops.ooboffs = 0;
+	ops.datbuf = (__u8 *)data;
+	ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt;
+	retval = mtd->write_oob(mtd, addr, &ops);
 
+#else
+	if (!dev->inbandTags) {
+		retval =
+		    mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+				   &dummy, data, (__u8 *) &pt, NULL);
+	} else {
+		retval =
+		    mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy,
+			       data);
 	}
 #endif
 
@@ -97,17 +95,18 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
 		return YAFFS_FAIL;
 }
 
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
-				       __u8 * data, yaffs_ExtendedTags * tags)
+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+				       __u8 *data, yaffs_ExtendedTags *tags)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #endif
 	size_t dummy;
 	int retval = 0;
+	int localData = 0;
 
-	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+	loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
 
 	yaffs_PackedTags2 pt;
 
@@ -116,9 +115,20 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
 	   ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
 	    TENDSTR), chunkInNAND, data, tags));
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
-	if (data && !tags)
-		retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
+	if (dev->inbandTags) {
+
+		if (!data) {
+			localData = 1;
+			data = yaffs_GetTempBuffer(dev, __LINE__);
+		}
+
+
+	}
+
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+	if (dev->inbandTags || (data && !tags))
+		retval = mtd->read(mtd, addr, dev->totalBytesPerChunk,
 				&dummy, data);
 	else if (tags) {
 		ops.mode = MTD_OOB_AUTO;
@@ -130,38 +140,42 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
 		retval = mtd->read_oob(mtd, addr, &ops);
 	}
 #else
-	if (data && tags) {
-		if (dev->useNANDECC) {
-			retval =
-			    mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
-					  &dummy, data, dev->spareBuffer,
-					  NULL);
-		} else {
-			retval =
-			    mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+	if (!dev->inbandTags && data && tags) {
+
+		retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
 					  &dummy, data, dev->spareBuffer,
 					  NULL);
-		}
 	} else {
 		if (data)
 			retval =
 			    mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
 				      data);
-		if (tags)
+		if (!dev->inbandTags && tags)
 			retval =
 			    mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
 					  dev->spareBuffer);
 	}
 #endif
 
-	memcpy(&pt, dev->spareBuffer, sizeof(pt));
 
-	if (tags)
-		yaffs_UnpackTags2(tags, &pt);
+	if (dev->inbandTags) {
+		if (tags) {
+			yaffs_PackedTags2TagsPart *pt2tp;
+			pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk];
+			yaffs_UnpackTags2TagsPart(tags, pt2tp);
+		}
+	} else {
+		if (tags) {
+			memcpy(&pt, dev->spareBuffer, sizeof(pt));
+			yaffs_UnpackTags2(tags, &pt);
+		}
+	}
+
+	if (localData)
+		yaffs_ReleaseTempBuffer(dev, data, __LINE__);
 
-	if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
+	if (tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
 		tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
-
 	if (retval == 0)
 		return YAFFS_OK;
 	else
@@ -178,7 +192,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
 	retval =
 	    mtd->block_markbad(mtd,
 			       blockNo * dev->nChunksPerBlock *
-			       dev->nDataBytesPerChunk);
+			       dev->totalBytesPerChunk);
 
 	if (retval == 0)
 		return YAFFS_OK;
@@ -188,7 +202,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
 }
 
 int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			    yaffs_BlockState * state, int *sequenceNumber)
+			    yaffs_BlockState *state, __u32 *sequenceNumber)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
 	int retval;
@@ -198,7 +212,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs
 	retval =
 	    mtd->block_isbad(mtd,
 			     blockNo * dev->nChunksPerBlock *
-			     dev->nDataBytesPerChunk);
+			     dev->totalBytesPerChunk);
 
 	if (retval) {
 		T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
--- a/fs/yaffs2/yaffs_mtdif2.h
+++ b/fs/yaffs2/yaffs_mtdif2.h
@@ -17,13 +17,13 @@
 #define __YAFFS_MTDIF2_H__
 
 #include "yaffs_guts.h"
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
-				      const __u8 * data,
-				      const yaffs_ExtendedTags * tags);
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
-				       __u8 * data, yaffs_ExtendedTags * tags);
+int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev, int chunkInNAND,
+				const __u8 *data,
+				const yaffs_ExtendedTags *tags);
+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+				__u8 *data, yaffs_ExtendedTags *tags);
 int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
 int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			    yaffs_BlockState * state, int *sequenceNumber);
+			yaffs_BlockState *state, __u32 *sequenceNumber);
 
 #endif
--- a/fs/yaffs2/yaffs_mtdif.c
+++ b/fs/yaffs2/yaffs_mtdif.c
@@ -12,7 +12,7 @@
  */
 
 const char *yaffs_mtdif_c_version =
-    "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $";
+	"$Id: yaffs_mtdif.c,v 1.22 2009-03-06 17:20:51 wookey Exp $";
 
 #include "yportenv.h"
 
@@ -24,7 +24,7 @@ const char *yaffs_mtdif_c_version =
 #include "linux/time.h"
 #include "linux/mtd/nand.h"
 
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
+#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
 static struct nand_oobinfo yaffs_oobinfo = {
 	.useecc = 1,
 	.eccbytes = 6,
@@ -36,7 +36,7 @@ static struct nand_oobinfo yaffs_noeccin
 };
 #endif
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
 {
 	oob[0] = spare->tagByte0;
@@ -45,8 +45,8 @@ static inline void translate_spare2oob(c
 	oob[3] = spare->tagByte3;
 	oob[4] = spare->tagByte4;
 	oob[5] = spare->tagByte5 & 0x3f;
-	oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80;
-	oob[5] |= spare->pageStatus == 0 ? 0: 0x40;
+	oob[5] |= spare->blockStatus == 'Y' ? 0 : 0x80;
+	oob[5] |= spare->pageStatus == 0 ? 0 : 0x40;
 	oob[6] = spare->tagByte6;
 	oob[7] = spare->tagByte7;
 }
@@ -71,18 +71,18 @@ static inline void translate_oob2spare(y
 }
 #endif
 
-int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
-			     const __u8 * data, const yaffs_Spare * spare)
+int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
+			     const __u8 *data, const yaffs_Spare *spare)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #endif
 	size_t dummy;
 	int retval = 0;
 
 	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	__u8 spareAsBytes[8]; /* OOB */
 
 	if (data && !spare)
@@ -135,18 +135,18 @@ int nandmtd_WriteChunkToNAND(yaffs_Devic
 		return YAFFS_FAIL;
 }
 
-int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
-			      yaffs_Spare * spare)
+int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
+			      yaffs_Spare *spare)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	struct mtd_oob_ops ops;
 #endif
 	size_t dummy;
 	int retval = 0;
 
 	loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 	__u8 spareAsBytes[8]; /* OOB */
 
 	if (data && !spare)
@@ -205,7 +205,7 @@ int nandmtd_ReadChunkFromNAND(yaffs_Devi
 		return YAFFS_FAIL;
 }
 
-int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber)
+int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber)
 {
 	struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
 	__u32 addr =
@@ -234,7 +234,7 @@ int nandmtd_EraseBlockInNAND(yaffs_Devic
 		return YAFFS_FAIL;
 }
 
-int nandmtd_InitialiseNAND(yaffs_Device * dev)
+int nandmtd_InitialiseNAND(yaffs_Device *dev)
 {
 	return YAFFS_OK;
 }
--- a/fs/yaffs2/yaffs_mtdif.h
+++ b/fs/yaffs2/yaffs_mtdif.h
@@ -18,10 +18,15 @@
 
 #include "yaffs_guts.h"
 
-int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
-			     const __u8 * data, const yaffs_Spare * spare);
-int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
-			      yaffs_Spare * spare);
-int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber);
-int nandmtd_InitialiseNAND(yaffs_Device * dev);
+#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
+extern struct nand_oobinfo yaffs_oobinfo;
+extern struct nand_oobinfo yaffs_noeccinfo;
+#endif
+
+int nandmtd_WriteChunkToNAND(yaffs_Device *dev, int chunkInNAND,
+			const __u8 *data, const yaffs_Spare *spare);
+int nandmtd_ReadChunkFromNAND(yaffs_Device *dev, int chunkInNAND, __u8 *data,
+			yaffs_Spare *spare);
+int nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber);
+int nandmtd_InitialiseNAND(yaffs_Device *dev);
 #endif
--- a/fs/yaffs2/yaffs_nand.c
+++ b/fs/yaffs2/yaffs_nand.c
@@ -12,16 +12,17 @@
  */
 
 const char *yaffs_nand_c_version =
-    "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $";
+	"$Id: yaffs_nand.c,v 1.10 2009-03-06 17:20:54 wookey Exp $";
 
 #include "yaffs_nand.h"
 #include "yaffs_tagscompat.h"
 #include "yaffs_tagsvalidity.h"
 
+#include "yaffs_getblockinfo.h"
 
-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
-					   __u8 * buffer,
-					   yaffs_ExtendedTags * tags)
+int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+					   __u8 *buffer,
+					   yaffs_ExtendedTags *tags)
 {
 	int result;
 	yaffs_ExtendedTags localTags;
@@ -29,7 +30,7 @@ int yaffs_ReadChunkWithTagsFromNAND(yaff
 	int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
 
 	/* If there are no tags provided, use local tags to get prioritised gc working */
-	if(!tags)
+	if (!tags)
 		tags = &localTags;
 
 	if (dev->readChunkWithTagsFromNAND)
@@ -40,20 +41,20 @@ int yaffs_ReadChunkWithTagsFromNAND(yaff
 									realignedChunkInNAND,
 									buffer,
 									tags);
-	if(tags &&
-	   tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR){
+	if (tags &&
+	   tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR) {
 
 		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
-                yaffs_HandleChunkError(dev,bi);
+		yaffs_HandleChunkError(dev, bi);
 	}
 
 	return result;
 }
 
-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
+int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
 						   int chunkInNAND,
-						   const __u8 * buffer,
-						   yaffs_ExtendedTags * tags)
+						   const __u8 *buffer,
+						   yaffs_ExtendedTags *tags)
 {
 	chunkInNAND -= dev->chunkOffset;
 
@@ -84,7 +85,7 @@ int yaffs_WriteChunkWithTagsToNAND(yaffs
 								       tags);
 }
 
-int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
+int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo)
 {
 	blockNo -= dev->blockOffset;
 
@@ -95,10 +96,10 @@ int yaffs_MarkBlockBad(yaffs_Device * de
 		return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
 }
 
-int yaffs_QueryInitialBlockState(yaffs_Device * dev,
+int yaffs_QueryInitialBlockState(yaffs_Device *dev,
 						 int blockNo,
-						 yaffs_BlockState * state,
-						 unsigned *sequenceNumber)
+						 yaffs_BlockState *state,
+						 __u32 *sequenceNumber)
 {
 	blockNo -= dev->blockOffset;
 
--- a/fs/yaffs2/yaffs_nandemul2k.h
+++ b/fs/yaffs2/yaffs_nandemul2k.h
@@ -21,14 +21,14 @@
 #include "yaffs_guts.h"
 
 int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
-					int chunkInNAND, const __u8 * data,
-					yaffs_ExtendedTags * tags);
+					int chunkInNAND, const __u8 *data,
+					const yaffs_ExtendedTags *tags);
 int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
-					 int chunkInNAND, __u8 * data,
-					 yaffs_ExtendedTags * tags);
+					 int chunkInNAND, __u8 *data,
+					 yaffs_ExtendedTags *tags);
 int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
 int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
-			      yaffs_BlockState * state, int *sequenceNumber);
+			      yaffs_BlockState *state, __u32 *sequenceNumber);
 int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
 				int blockInNAND);
 int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
--- a/fs/yaffs2/yaffs_nand.h
+++ b/fs/yaffs2/yaffs_nand.h
@@ -19,21 +19,21 @@
 
 
 
-int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
-					   __u8 * buffer,
-					   yaffs_ExtendedTags * tags);
-
-int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
-						   int chunkInNAND,
-						   const __u8 * buffer,
-						   yaffs_ExtendedTags * tags);
-
-int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo);
-
-int yaffs_QueryInitialBlockState(yaffs_Device * dev,
-						 int blockNo,
-						 yaffs_BlockState * state,
-						 unsigned *sequenceNumber);
+int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND,
+					__u8 *buffer,
+					yaffs_ExtendedTags *tags);
+
+int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+						int chunkInNAND,
+						const __u8 *buffer,
+						yaffs_ExtendedTags *tags);
+
+int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo);
+
+int yaffs_QueryInitialBlockState(yaffs_Device *dev,
+						int blockNo,
+						yaffs_BlockState *state,
+						unsigned *sequenceNumber);
 
 int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
 				  int blockInNAND);
--- a/fs/yaffs2/yaffs_packedtags1.c
+++ b/fs/yaffs2/yaffs_packedtags1.c
@@ -14,7 +14,7 @@
 #include "yaffs_packedtags1.h"
 #include "yportenv.h"
 
-void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t)
+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t)
 {
 	pt->chunkId = t->chunkId;
 	pt->serialNumber = t->serialNumber;
@@ -27,7 +27,7 @@ void yaffs_PackTags1(yaffs_PackedTags1 *
 
 }
 
-void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt)
+void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt)
 {
 	static const __u8 allFF[] =
 	    { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
@@ -35,9 +35,8 @@ void yaffs_UnpackTags1(yaffs_ExtendedTag
 
 	if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
 		t->blockBad = 0;
-		if (pt->shouldBeFF != 0xFFFFFFFF) {
+		if (pt->shouldBeFF != 0xFFFFFFFF)
 			t->blockBad = 1;
-		}
 		t->chunkUsed = 1;
 		t->objectId = pt->objectId;
 		t->chunkId = pt->chunkId;
@@ -47,6 +46,5 @@ void yaffs_UnpackTags1(yaffs_ExtendedTag
 		t->serialNumber = pt->serialNumber;
 	} else {
 		memset(t, 0, sizeof(yaffs_ExtendedTags));
-
 	}
 }
--- a/fs/yaffs2/yaffs_packedtags1.h
+++ b/fs/yaffs2/yaffs_packedtags1.h
@@ -32,6 +32,6 @@ typedef struct {
 
 } yaffs_PackedTags1;
 
-void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t);
-void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt);
+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t);
+void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt);
 #endif
--- a/fs/yaffs2/yaffs_packedtags2.c
+++ b/fs/yaffs2/yaffs_packedtags2.c
@@ -37,60 +37,68 @@
 #define EXTRA_OBJECT_TYPE_SHIFT (28)
 #define EXTRA_OBJECT_TYPE_MASK  ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
 
-static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
+
+static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt)
 {
 	T(YAFFS_TRACE_MTD,
 	  (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
-	   pt->t.objectId, pt->t.chunkId, pt->t.byteCount,
-	   pt->t.sequenceNumber));
+	   ptt->objectId, ptt->chunkId, ptt->byteCount,
+	   ptt->sequenceNumber));
+}
+static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
+{
+	yaffs_DumpPackedTags2TagsPart(&pt->t);
 }
 
-static void yaffs_DumpTags2(const yaffs_ExtendedTags * t)
+static void yaffs_DumpTags2(const yaffs_ExtendedTags *t)
 {
 	T(YAFFS_TRACE_MTD,
 	  (TSTR
-	   ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte "
-	    "%d del %d ser %d seq %d"
+	   ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
 	    TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
 	   t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
 	   t->sequenceNumber));
 
 }
 
-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
+		const yaffs_ExtendedTags *t)
 {
-	pt->t.chunkId = t->chunkId;
-	pt->t.sequenceNumber = t->sequenceNumber;
-	pt->t.byteCount = t->byteCount;
-	pt->t.objectId = t->objectId;
+	ptt->chunkId = t->chunkId;
+	ptt->sequenceNumber = t->sequenceNumber;
+	ptt->byteCount = t->byteCount;
+	ptt->objectId = t->objectId;
 
 	if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
 		/* Store the extra header info instead */
 		/* We save the parent object in the chunkId */
-		pt->t.chunkId = EXTRA_HEADER_INFO_FLAG
+		ptt->chunkId = EXTRA_HEADER_INFO_FLAG
 			| t->extraParentObjectId;
-		if (t->extraIsShrinkHeader) {
-			pt->t.chunkId |= EXTRA_SHRINK_FLAG;
-		}
-		if (t->extraShadows) {
-			pt->t.chunkId |= EXTRA_SHADOWS_FLAG;
-		}
+		if (t->extraIsShrinkHeader)
+			ptt->chunkId |= EXTRA_SHRINK_FLAG;
+		if (t->extraShadows)
+			ptt->chunkId |= EXTRA_SHADOWS_FLAG;
 
-		pt->t.objectId &= ~EXTRA_OBJECT_TYPE_MASK;
-		pt->t.objectId |=
+		ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+		ptt->objectId |=
 		    (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
 
-		if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
-			pt->t.byteCount = t->extraEquivalentObjectId;
-		} else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) {
-			pt->t.byteCount = t->extraFileLength;
-		} else {
-			pt->t.byteCount = 0;
-		}
+		if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
+			ptt->byteCount = t->extraEquivalentObjectId;
+		else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE)
+			ptt->byteCount = t->extraFileLength;
+		else
+			ptt->byteCount = 0;
 	}
 
-	yaffs_DumpPackedTags2(pt);
+	yaffs_DumpPackedTags2TagsPart(ptt);
 	yaffs_DumpTags2(t);
+}
+
+
+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t)
+{
+	yaffs_PackTags2TagsPart(&pt->t, t);
 
 #ifndef YAFFS_IGNORE_TAGS_ECC
 	{
@@ -101,82 +109,98 @@ void yaffs_PackTags2(yaffs_PackedTags2 *
 #endif
 }
 
-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
+
+void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t,
+		yaffs_PackedTags2TagsPart *ptt)
 {
 
 	memset(t, 0, sizeof(yaffs_ExtendedTags));
 
 	yaffs_InitialiseTags(t);
 
-	if (pt->t.sequenceNumber != 0xFFFFFFFF) {
-		/* Page is in use */
-#ifdef YAFFS_IGNORE_TAGS_ECC
-		{
-			t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
-		}
-#else
-		{
-			yaffs_ECCOther ecc;
-			int result;
-			yaffs_ECCCalculateOther((unsigned char *)&pt->t,
-						sizeof
-						(yaffs_PackedTags2TagsPart),
-						&ecc);
-			result =
-			    yaffs_ECCCorrectOther((unsigned char *)&pt->t,
-						  sizeof
-						  (yaffs_PackedTags2TagsPart),
-						  &pt->ecc, &ecc);
-			switch(result){
-				case 0:
-					t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
-					break;
-				case 1:
-					t->eccResult = YAFFS_ECC_RESULT_FIXED;
-					break;
-				case -1:
-					t->eccResult = YAFFS_ECC_RESULT_UNFIXED;
-					break;
-				default:
-					t->eccResult = YAFFS_ECC_RESULT_UNKNOWN;
-			}
-		}
-#endif
+	if (ptt->sequenceNumber != 0xFFFFFFFF) {
 		t->blockBad = 0;
 		t->chunkUsed = 1;
-		t->objectId = pt->t.objectId;
-		t->chunkId = pt->t.chunkId;
-		t->byteCount = pt->t.byteCount;
+		t->objectId = ptt->objectId;
+		t->chunkId = ptt->chunkId;
+		t->byteCount = ptt->byteCount;
 		t->chunkDeleted = 0;
 		t->serialNumber = 0;
-		t->sequenceNumber = pt->t.sequenceNumber;
+		t->sequenceNumber = ptt->sequenceNumber;
 
 		/* Do extra header info stuff */
 
-		if (pt->t.chunkId & EXTRA_HEADER_INFO_FLAG) {
+		if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) {
 			t->chunkId = 0;
 			t->byteCount = 0;
 
 			t->extraHeaderInfoAvailable = 1;
 			t->extraParentObjectId =
-			    pt->t.chunkId & (~(ALL_EXTRA_FLAGS));
+			    ptt->chunkId & (~(ALL_EXTRA_FLAGS));
 			t->extraIsShrinkHeader =
-			    (pt->t.chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
+			    (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
 			t->extraShadows =
-			    (pt->t.chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
+			    (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
 			t->extraObjectType =
-			    pt->t.objectId >> EXTRA_OBJECT_TYPE_SHIFT;
+			    ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
 			t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
 
-			if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
-				t->extraEquivalentObjectId = pt->t.byteCount;
-			} else {
-				t->extraFileLength = pt->t.byteCount;
+			if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK)
+				t->extraEquivalentObjectId = ptt->byteCount;
+			else
+				t->extraFileLength = ptt->byteCount;
+		}
+	}
+
+	yaffs_DumpPackedTags2TagsPart(ptt);
+	yaffs_DumpTags2(t);
+
+}
+
+
+void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt)
+{
+
+	yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+
+	if (pt->t.sequenceNumber != 0xFFFFFFFF) {
+		/* Page is in use */
+#ifndef YAFFS_IGNORE_TAGS_ECC
+		{
+			yaffs_ECCOther ecc;
+			int result;
+			yaffs_ECCCalculateOther((unsigned char *)&pt->t,
+						sizeof
+						(yaffs_PackedTags2TagsPart),
+						&ecc);
+			result =
+			    yaffs_ECCCorrectOther((unsigned char *)&pt->t,
+						  sizeof
+						  (yaffs_PackedTags2TagsPart),
+						  &pt->ecc, &ecc);
+			switch (result) {
+			case 0:
+				eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+				break;
+			case 1:
+				eccResult = YAFFS_ECC_RESULT_FIXED;
+				break;
+			case -1:
+				eccResult = YAFFS_ECC_RESULT_UNFIXED;
+				break;
+			default:
+				eccResult = YAFFS_ECC_RESULT_UNKNOWN;
 			}
 		}
+#endif
 	}
 
+	yaffs_UnpackTags2TagsPart(t, &pt->t);
+
+	t->eccResult = eccResult;
+
 	yaffs_DumpPackedTags2(pt);
 	yaffs_DumpTags2(t);
 
 }
+
--- a/fs/yaffs2/yaffs_packedtags2.h
+++ b/fs/yaffs2/yaffs_packedtags2.h
@@ -33,6 +33,11 @@ typedef struct {
 	yaffs_ECCOther ecc;
 } yaffs_PackedTags2;
 
-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t);
-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt);
+/* Full packed tags with ECC, used for oob tags */
+void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ExtendedTags *t);
+void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt);
+
+/* Only the tags part (no ECC for use with inband tags */
+void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ExtendedTags *t);
+void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags *t, yaffs_PackedTags2TagsPart *pt);
 #endif
--- a/fs/yaffs2/yaffs_qsort.c
+++ b/fs/yaffs2/yaffs_qsort.c
@@ -28,12 +28,12 @@
  */
 
 #include "yportenv.h"
-//#include <linux/string.h>
+/* #include <linux/string.h> */
 
 /*
  * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
  */
-#define swapcode(TYPE, parmi, parmj, n) { 		\
+#define swapcode(TYPE, parmi, parmj, n) do { 		\
 	long i = (n) / sizeof (TYPE); 			\
 	register TYPE *pi = (TYPE *) (parmi); 		\
 	register TYPE *pj = (TYPE *) (parmj); 		\
@@ -41,28 +41,29 @@
 		register TYPE	t = *pi;		\
 		*pi++ = *pj;				\
 		*pj++ = t;				\
-        } while (--i > 0);				\
-}
+	} while (--i > 0);				\
+} while (0)
 
 #define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
-	es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;
+	es % sizeof(long) ? 2 : es == sizeof(long) ? 0 : 1;
 
 static __inline void
 swapfunc(char *a, char *b, int n, int swaptype)
 {
 	if (swaptype <= 1)
-		swapcode(long, a, b, n)
+		swapcode(long, a, b, n);
 	else
-		swapcode(char, a, b, n)
+		swapcode(char, a, b, n);
 }
 
-#define swap(a, b)					\
+#define yswap(a, b) do {					\
 	if (swaptype == 0) {				\
 		long t = *(long *)(a);			\
 		*(long *)(a) = *(long *)(b);		\
 		*(long *)(b) = t;			\
 	} else						\
-		swapfunc(a, b, es, swaptype)
+		swapfunc(a, b, es, swaptype);		\
+} while (0)
 
 #define vecswap(a, b, n) 	if ((n) > 0) swapfunc(a, b, n, swaptype)
 
@@ -70,12 +71,12 @@ static __inline char *
 med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *))
 {
 	return cmp(a, b) < 0 ?
-	       (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a ))
-              :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c ));
+		(cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a))
+		: (cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c));
 }
 
 #ifndef min
-#define min(a,b) (((a) < (b)) ? (a) : (b))
+#define min(a, b) (((a) < (b)) ? (a) : (b))
 #endif
 
 void
@@ -92,7 +93,7 @@ loop:	SWAPINIT(a, es);
 		for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
 			for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
 			     pl -= es)
-				swap(pl, pl - es);
+				yswap(pl, pl - es);
 		return;
 	}
 	pm = (char *)a + (n / 2) * es;
@@ -107,7 +108,7 @@ loop:	SWAPINIT(a, es);
 		}
 		pm = med3(pl, pm, pn, cmp);
 	}
-	swap(a, pm);
+	yswap(a, pm);
 	pa = pb = (char *)a + es;
 
 	pc = pd = (char *)a + (n - 1) * es;
@@ -115,7 +116,7 @@ loop:	SWAPINIT(a, es);
 		while (pb <= pc && (r = cmp(pb, a)) <= 0) {
 			if (r == 0) {
 				swap_cnt = 1;
-				swap(pa, pb);
+				yswap(pa, pb);
 				pa += es;
 			}
 			pb += es;
@@ -123,14 +124,14 @@ loop:	SWAPINIT(a, es);
 		while (pb <= pc && (r = cmp(pc, a)) >= 0) {
 			if (r == 0) {
 				swap_cnt = 1;
-				swap(pc, pd);
+				yswap(pc, pd);
 				pd -= es;
 			}
 			pc -= es;
 		}
 		if (pb > pc)
 			break;
-		swap(pb, pc);
+		yswap(pb, pc);
 		swap_cnt = 1;
 		pb += es;
 		pc -= es;
@@ -139,7 +140,7 @@ loop:	SWAPINIT(a, es);
 		for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es)
 			for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
 			     pl -= es)
-				swap(pl, pl - es);
+				yswap(pl, pl - es);
 		return;
 	}
 
@@ -148,9 +149,11 @@ loop:	SWAPINIT(a, es);
 	vecswap(a, pb - r, r);
 	r = min((long)(pd - pc), (long)(pn - pd - es));
 	vecswap(pb, pn - r, r);
-	if ((r = pb - pa) > es)
+	r = pb - pa;
+	if (r > es)
 		yaffs_qsort(a, r / es, es, cmp);
-	if ((r = pd - pc) > es) {
+	r = pd - pc;
+	if (r > es) {
 		/* Iterate rather than recurse to save stack space */
 		a = pn - r;
 		n = r / es;
--- a/fs/yaffs2/yaffs_qsort.h
+++ b/fs/yaffs2/yaffs_qsort.h
@@ -17,7 +17,7 @@
 #ifndef __YAFFS_QSORT_H__
 #define __YAFFS_QSORT_H__
 
-extern void yaffs_qsort (void *const base, size_t total_elems, size_t size,
-                   int (*cmp)(const void *, const void *));
+extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
+			int (*cmp)(const void *, const void *));
 
 #endif
--- a/fs/yaffs2/yaffs_tagscompat.c
+++ b/fs/yaffs2/yaffs_tagscompat.c
@@ -14,16 +14,17 @@
 #include "yaffs_guts.h"
 #include "yaffs_tagscompat.h"
 #include "yaffs_ecc.h"
+#include "yaffs_getblockinfo.h"
 
-static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND);
+static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND);
 #ifdef NOTYET
-static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND);
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
-				     const __u8 * data,
-				     const yaffs_Spare * spare);
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
-				    const yaffs_Spare * spare);
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND);
+static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND);
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+				     const __u8 *data,
+				     const yaffs_Spare *spare);
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+				    const yaffs_Spare *spare);
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND);
 #endif
 
 static const char yaffs_countBitsTable[256] = {
@@ -54,13 +55,13 @@ int yaffs_CountBits(__u8 x)
 
 /********** Tags ECC calculations  *********/
 
-void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare)
+void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare)
 {
 	yaffs_ECCCalculate(data, spare->ecc1);
 	yaffs_ECCCalculate(&data[256], spare->ecc2);
 }
 
-void yaffs_CalcTagsECC(yaffs_Tags * tags)
+void yaffs_CalcTagsECC(yaffs_Tags *tags)
 {
 	/* Calculate an ecc */
 
@@ -74,9 +75,8 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags
 	for (i = 0; i < 8; i++) {
 		for (j = 1; j & 0xff; j <<= 1) {
 			bit++;
-			if (b[i] & j) {
+			if (b[i] & j)
 				ecc ^= bit;
-			}
 		}
 	}
 
@@ -84,7 +84,7 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags
 
 }
 
-int yaffs_CheckECCOnTags(yaffs_Tags * tags)
+int yaffs_CheckECCOnTags(yaffs_Tags *tags)
 {
 	unsigned ecc = tags->ecc;
 
@@ -115,8 +115,8 @@ int yaffs_CheckECCOnTags(yaffs_Tags * ta
 
 /********** Tags **********/
 
-static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr,
-				    yaffs_Tags * tagsPtr)
+static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr,
+				yaffs_Tags *tagsPtr)
 {
 	yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
 
@@ -132,8 +132,8 @@ static void yaffs_LoadTagsIntoSpare(yaff
 	sparePtr->tagByte7 = tu->asBytes[7];
 }
 
-static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr,
-				   yaffs_Tags * tagsPtr)
+static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,
+				yaffs_Tags *tagsPtr)
 {
 	yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
 	int result;
@@ -148,21 +148,20 @@ static void yaffs_GetTagsFromSpare(yaffs
 	tu->asBytes[7] = sparePtr->tagByte7;
 
 	result = yaffs_CheckECCOnTags(tagsPtr);
-	if (result > 0) {
+	if (result > 0)
 		dev->tagsEccFixed++;
-	} else if (result < 0) {
+	else if (result < 0)
 		dev->tagsEccUnfixed++;
-	}
 }
 
-static void yaffs_SpareInitialise(yaffs_Spare * spare)
+static void yaffs_SpareInitialise(yaffs_Spare *spare)
 {
 	memset(spare, 0xFF, sizeof(yaffs_Spare));
 }
 
 static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,
-				  int chunkInNAND, const __u8 * data,
-				  yaffs_Spare * spare)
+				int chunkInNAND, const __u8 *data,
+				yaffs_Spare *spare)
 {
 	if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) {
 		T(YAFFS_TRACE_ERROR,
@@ -177,9 +176,9 @@ static int yaffs_WriteChunkToNAND(struct
 
 static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
 				   int chunkInNAND,
-				   __u8 * data,
-				   yaffs_Spare * spare,
-				   yaffs_ECCResult * eccResult,
+				   __u8 *data,
+				   yaffs_Spare *spare,
+				   yaffs_ECCResult *eccResult,
 				   int doErrorCorrection)
 {
 	int retVal;
@@ -252,9 +251,11 @@ static int yaffs_ReadChunkFromNAND(struc
 		/* Must allocate enough memory for spare+2*sizeof(int) */
 		/* for ecc results from device. */
 		struct yaffs_NANDSpare nspare;
-		retVal =
-		    dev->readChunkFromNAND(dev, chunkInNAND, data,
-					   (yaffs_Spare *) & nspare);
+
+		memset(&nspare, 0, sizeof(nspare));
+
+		retVal = dev->readChunkFromNAND(dev, chunkInNAND, data,
+					(yaffs_Spare *) &nspare);
 		memcpy(spare, &nspare, sizeof(yaffs_Spare));
 		if (data && doErrorCorrection) {
 			if (nspare.eccres1 > 0) {
@@ -302,8 +303,7 @@ static int yaffs_ReadChunkFromNAND(struc
 static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
 				  int chunkInNAND)
 {
-
-	static int init = 0;
+	static int init;
 	static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
 	static __u8 data[YAFFS_BYTES_PER_CHUNK];
 	/* Might as well always allocate the larger size for */
@@ -331,12 +331,12 @@ static int yaffs_CheckChunkErased(struct
  * Functions for robustisizing
  */
 
-static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND)
+static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND)
 {
 	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
 
 	/* Mark the block for retirement */
-	yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
+	yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1;
 	T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
 	  (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
 
@@ -348,22 +348,22 @@ static void yaffs_HandleReadDataError(ya
 }
 
 #ifdef NOTYET
-static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND)
+static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND)
 {
 }
 
-static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
-				     const __u8 * data,
-				     const yaffs_Spare * spare)
+static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND,
+				     const __u8 *data,
+				     const yaffs_Spare *spare)
 {
 }
 
-static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
-				    const yaffs_Spare * spare)
+static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND,
+				    const yaffs_Spare *spare)
 {
 }
 
-static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND)
+static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND)
 {
 	int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
 
@@ -373,8 +373,8 @@ static void yaffs_HandleWriteChunkError(
 	yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
 }
 
-static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1,
-			       const yaffs_Spare * s0, const yaffs_Spare * s1)
+static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1,
+			       const yaffs_Spare *s0, const yaffs_Spare *s1)
 {
 
 	if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
@@ -398,28 +398,35 @@ static int yaffs_VerifyCompare(const __u
 }
 #endif				/* NOTYET */
 
-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
-						    int chunkInNAND,
-						    const __u8 * data,
-						    const yaffs_ExtendedTags *
-						    eTags)
+int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
+						int chunkInNAND,
+						const __u8 *data,
+						const yaffs_ExtendedTags *eTags)
 {
 	yaffs_Spare spare;
 	yaffs_Tags tags;
 
 	yaffs_SpareInitialise(&spare);
 
-	if (eTags->chunkDeleted) {
+	if (eTags->chunkDeleted)
 		spare.pageStatus = 0;
-	} else {
+	else {
 		tags.objectId = eTags->objectId;
 		tags.chunkId = eTags->chunkId;
-		tags.byteCount = eTags->byteCount;
+
+		tags.byteCountLSB = eTags->byteCount & 0x3ff;
+
+		if (dev->nDataBytesPerChunk >= 1024)
+			tags.byteCountMSB = (eTags->byteCount >> 10) & 3;
+		else
+			tags.byteCountMSB = 3;
+
+
 		tags.serialNumber = eTags->serialNumber;
 
-		if (!dev->useNANDECC && data) {
+		if (!dev->useNANDECC && data)
 			yaffs_CalcECC(data, &spare);
-		}
+
 		yaffs_LoadTagsIntoSpare(&spare, &tags);
 
 	}
@@ -427,15 +434,15 @@ int yaffs_TagsCompatabilityWriteChunkWit
 	return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare);
 }
 
-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
+int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
 						     int chunkInNAND,
-						     __u8 * data,
-						     yaffs_ExtendedTags * eTags)
+						     __u8 *data,
+						     yaffs_ExtendedTags *eTags)
 {
 
 	yaffs_Spare spare;
 	yaffs_Tags tags;
-	yaffs_ECCResult eccResult;
+	yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN;
 
 	static yaffs_Spare spareFF;
 	static int init;
@@ -466,7 +473,11 @@ int yaffs_TagsCompatabilityReadChunkWith
 
 				eTags->objectId = tags.objectId;
 				eTags->chunkId = tags.chunkId;
-				eTags->byteCount = tags.byteCount;
+				eTags->byteCount = tags.byteCountLSB;
+
+				if (dev->nDataBytesPerChunk >= 1024)
+					eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10);
+
 				eTags->serialNumber = tags.serialNumber;
 			}
 		}
@@ -497,9 +508,9 @@ int yaffs_TagsCompatabilityMarkNANDBlock
 }
 
 int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
-					  int blockNo, yaffs_BlockState *
-					  state,
-					  int *sequenceNumber)
+					  int blockNo,
+					  yaffs_BlockState *state,
+					  __u32 *sequenceNumber)
 {
 
 	yaffs_Spare spare0, spare1;
--- a/fs/yaffs2/yaffs_tagscompat.h
+++ b/fs/yaffs2/yaffs_tagscompat.h
@@ -17,24 +17,23 @@
 #define __YAFFS_TAGSCOMPAT_H__
 
 #include "yaffs_guts.h"
-int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
-						    int chunkInNAND,
-						    const __u8 * data,
-						    const yaffs_ExtendedTags *
-						    tags);
-int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
-						     int chunkInNAND,
-						     __u8 * data,
-						     yaffs_ExtendedTags *
-						     tags);
+int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,
+						int chunkInNAND,
+						const __u8 *data,
+						const yaffs_ExtendedTags *tags);
+int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,
+						int chunkInNAND,
+						__u8 *data,
+						yaffs_ExtendedTags *tags);
 int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
 					    int blockNo);
 int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
-					  int blockNo, yaffs_BlockState *
-					  state, int *sequenceNumber);
+					  int blockNo,
+					  yaffs_BlockState *state,
+					  __u32 *sequenceNumber);
 
-void yaffs_CalcTagsECC(yaffs_Tags * tags);
-int yaffs_CheckECCOnTags(yaffs_Tags * tags);
+void yaffs_CalcTagsECC(yaffs_Tags *tags);
+int yaffs_CheckECCOnTags(yaffs_Tags *tags);
 int yaffs_CountBits(__u8 byte);
 
 #endif
--- a/fs/yaffs2/yaffs_tagsvalidity.c
+++ b/fs/yaffs2/yaffs_tagsvalidity.c
@@ -13,14 +13,14 @@
 
 #include "yaffs_tagsvalidity.h"
 
-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags)
+void yaffs_InitialiseTags(yaffs_ExtendedTags *tags)
 {
 	memset(tags, 0, sizeof(yaffs_ExtendedTags));
 	tags->validMarker0 = 0xAAAAAAAA;
 	tags->validMarker1 = 0x55555555;
 }
 
-int yaffs_ValidateTags(yaffs_ExtendedTags * tags)
+int yaffs_ValidateTags(yaffs_ExtendedTags *tags)
 {
 	return (tags->validMarker0 == 0xAAAAAAAA &&
 		tags->validMarker1 == 0x55555555);
--- a/fs/yaffs2/yaffs_tagsvalidity.h
+++ b/fs/yaffs2/yaffs_tagsvalidity.h
@@ -19,6 +19,6 @@
 
 #include "yaffs_guts.h"
 
-void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
-int yaffs_ValidateTags(yaffs_ExtendedTags * tags);
+void yaffs_InitialiseTags(yaffs_ExtendedTags *tags);
+int yaffs_ValidateTags(yaffs_ExtendedTags *tags);
 #endif
--- a/fs/yaffs2/yportenv.h
+++ b/fs/yaffs2/yportenv.h
@@ -17,17 +17,28 @@
 #ifndef __YPORTENV_H__
 #define __YPORTENV_H__
 
+/*
+ * Define the MTD version in terms of Linux Kernel versions
+ * This allows yaffs to be used independantly of the kernel
+ * as well as with it.
+ */
+
+#define MTD_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
+
 #if defined CONFIG_YAFFS_WINCE
 
 #include "ywinceenv.h"
 
-#elif  defined __KERNEL__
+#elif defined __KERNEL__
 
 #include "moduleconfig.h"
 
 /* Linux kernel */
+
 #include <linux/version.h>
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
+#define MTD_VERSION_CODE LINUX_VERSION_CODE
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 #include <linux/config.h>
 #endif
 #include <linux/kernel.h>
@@ -40,12 +51,13 @@
 #define YCHAR char
 #define YUCHAR unsigned char
 #define _Y(x)     x
-#define yaffs_strcpy(a,b)    strcpy(a,b)
-#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
-#define yaffs_strncmp(a,b,c) strncmp(a,b,c)
-#define yaffs_strlen(s)	     strlen(s)
-#define yaffs_sprintf	     sprintf
-#define yaffs_toupper(a)     toupper(a)
+#define yaffs_strcat(a, b)     strcat(a, b)
+#define yaffs_strcpy(a, b)     strcpy(a, b)
+#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
+#define yaffs_strncmp(a, b, c) strncmp(a, b, c)
+#define yaffs_strlen(s)	       strlen(s)
+#define yaffs_sprintf	       sprintf
+#define yaffs_toupper(a)       toupper(a)
 
 #define Y_INLINE inline
 
@@ -53,19 +65,19 @@
 #define YAFFS_LOSTNFOUND_PREFIX		"obj"
 
 /* #define YPRINTF(x) printk x */
-#define YMALLOC(x) kmalloc(x,GFP_KERNEL)
+#define YMALLOC(x) kmalloc(x, GFP_NOFS)
 #define YFREE(x)   kfree(x)
 #define YMALLOC_ALT(x) vmalloc(x)
 #define YFREE_ALT(x)   vfree(x)
 #define YMALLOC_DMA(x) YMALLOC(x)
 
-// KR - added for use in scan so processes aren't blocked indefinitely.
+/* KR - added for use in scan so processes aren't blocked indefinitely. */
 #define YYIELD() schedule()
 
 #define YAFFS_ROOT_MODE			0666
 #define YAFFS_LOSTNFOUND_MODE		0666
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
 #define Y_TIME_CONVERT(x) (x).tv_sec
 #else
@@ -73,11 +85,12 @@
 #define Y_TIME_CONVERT(x) (x)
 #endif
 
-#define yaffs_SumCompare(x,y) ((x) == (y))
-#define yaffs_strcmp(a,b) strcmp(a,b)
+#define yaffs_SumCompare(x, y) ((x) == (y))
+#define yaffs_strcmp(a, b) strcmp(a, b)
 
 #define TENDSTR "\n"
 #define TSTR(x) KERN_WARNING x
+#define TCONT(x) x
 #define TOUT(p) printk p
 
 #define yaffs_trace(mask, fmt, args...) \
@@ -90,6 +103,8 @@
 
 #elif defined CONFIG_YAFFS_DIRECT
 
+#define MTD_VERSION_CODE MTD_VERSION(2, 6, 22)
+
 /* Direct interface */
 #include "ydirectenv.h"
 
@@ -111,11 +126,12 @@
 #define YCHAR char
 #define YUCHAR unsigned char
 #define _Y(x)     x
-#define yaffs_strcpy(a,b)    strcpy(a,b)
-#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
-#define yaffs_strlen(s)	     strlen(s)
-#define yaffs_sprintf	     sprintf
-#define yaffs_toupper(a)     toupper(a)
+#define yaffs_strcat(a, b)     strcat(a, b)
+#define yaffs_strcpy(a, b)     strcpy(a, b)
+#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
+#define yaffs_strlen(s)	       strlen(s)
+#define yaffs_sprintf	       sprintf
+#define yaffs_toupper(a)       toupper(a)
 
 #define Y_INLINE inline
 
@@ -133,8 +149,8 @@
 #define YAFFS_ROOT_MODE				0666
 #define YAFFS_LOSTNFOUND_MODE		0666
 
-#define yaffs_SumCompare(x,y) ((x) == (y))
-#define yaffs_strcmp(a,b) strcmp(a,b)
+#define yaffs_SumCompare(x, y) ((x) == (y))
+#define yaffs_strcmp(a, b) strcmp(a, b)
 
 #else
 /* Should have specified a configuration type */
@@ -178,10 +194,10 @@ extern unsigned int yaffs_wr_attempts;
 #define YAFFS_TRACE_ALWAYS		0xF0000000
 
 
-#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
+#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
 
-#ifndef CONFIG_YAFFS_WINCE
-#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__))
+#ifndef YBUG
+#define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0)
 #endif
 
 #endif