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authorJohn Crispin <john@openwrt.org>2015-07-17 12:48:39 +0000
committerJohn Crispin <john@openwrt.org>2015-07-17 12:48:39 +0000
commit208ab54e3e9516dd9fcf1ce197950044e0bebd90 (patch)
tree425580d694235f06661dd2d6763925a1f69279c6 /target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch
parent03b56c9350057ee77cfe2b8bb8f8d7146917fb79 (diff)
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brcm2708: add linux 4.1 support
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 46399
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch')
-rw-r--r--target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch27
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch b/target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch
new file mode 100644
index 0000000..85cdc71
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.1/0045-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch
@@ -0,0 +1,27 @@
+From 63dc5102ff1e782a18c891169ef614ff83fd16da Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 18 Jun 2014 13:42:01 +0100
+Subject: [PATCH 045/121] vmstat: Workaround for issue where dirty page count
+ goes negative
+
+See:
+https://github.com/raspberrypi/linux/issues/617
+http://www.spinics.net/lists/linux-mm/msg72236.html
+---
+ include/linux/vmstat.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/include/linux/vmstat.h
++++ b/include/linux/vmstat.h
+@@ -241,7 +241,11 @@ static inline void __inc_zone_state(stru
+ static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
+ {
+ atomic_long_dec(&zone->vm_stat[item]);
++ if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&zone->vm_stat[item]) < 0))
++ atomic_long_set(&zone->vm_stat[item], 0);
+ atomic_long_dec(&vm_stat[item]);
++ if (item == NR_FILE_DIRTY && unlikely(atomic_long_read(&vm_stat[item]) < 0))
++ atomic_long_set(&vm_stat[item], 0);
+ }
+
+ static inline void __inc_zone_page_state(struct page *page,