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Diffstat (limited to 'target/linux/generic-2.6/patches/204-jffs2_eofdetect.patch')
-rw-r--r--target/linux/generic-2.6/patches/204-jffs2_eofdetect.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches/204-jffs2_eofdetect.patch b/target/linux/generic-2.6/patches/204-jffs2_eofdetect.patch
new file mode 100644
index 0000000..9f248c9
--- /dev/null
+++ b/target/linux/generic-2.6/patches/204-jffs2_eofdetect.patch
@@ -0,0 +1,58 @@
+diff -urN linux.old/fs/jffs2/build.c linux.dev/fs/jffs2/build.c
+--- linux.old/fs/jffs2/build.c 2006-06-18 03:49:35.000000000 +0200
++++ linux.dev/fs/jffs2/build.c 2006-06-23 21:46:48.000000000 +0200
+@@ -107,6 +107,17 @@
+ dbg_fsbuild("scanned flash completely\n");
+ jffs2_dbg_dump_block_lists_nolock(c);
+
++ if (c->flags & (1 << 7)) {
++ printk("%s(): unlocking the mtd device... ", __func__);
++ if (c->mtd->unlock)
++ c->mtd->unlock(c->mtd, 0, c->mtd->size);
++ printk("done.\n");
++
++ printk("%s(): erasing all blocks after the end marker... ", __func__);
++ jffs2_erase_pending_blocks(c, -1);
++ printk("done.\n");
++ }
++
+ dbg_fsbuild("pass 1 starting\n");
+ c->flags |= JFFS2_SB_FLAG_BUILDING;
+ /* Now scan the directory tree, increasing nlink according to every dirent found. */
+diff -urN linux.old/fs/jffs2/scan.c linux.dev/fs/jffs2/scan.c
+--- linux.old/fs/jffs2/scan.c 2006-06-23 21:39:38.000000000 +0200
++++ linux.dev/fs/jffs2/scan.c 2006-06-23 21:42:18.000000000 +0200
+@@ -119,9 +119,12 @@
+
+ /* reset summary info for next eraseblock scan */
+ jffs2_sum_reset_collected(s);
+-
+- ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+- buf_size, s);
++
++ if (c->flags & (1 << 7))
++ ret = BLK_STATE_ALLFF;
++ else
++ ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
++ buf_size, s);
+
+ if (ret < 0)
+ goto out;
+@@ -389,6 +392,17 @@
+ return err;
+ }
+
++ if ((buf[0] == 0xde) &&
++ (buf[1] == 0xad) &&
++ (buf[2] == 0xc0) &&
++ (buf[3] == 0xde)) {
++ /* end of filesystem. erase everything after this point */
++ printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
++ c->flags |= (1 << 7);
++
++ return BLK_STATE_ALLFF;
++ }
++
+ /* We temporarily use 'ofs' as a pointer into the buffer/jeb */
+ ofs = 0;
+