diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch b/target/linux/brcm2708/patches-4.4/0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch new file mode 100644 index 0000000..4361b54 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0003-vmstat-Workaround-for-issue-where-dirty-page-count-g.patch @@ -0,0 +1,27 @@ +From 3ea06ff9ba42a29f37b46ced2fb90ff9e06da445 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Wed, 18 Jun 2014 13:42:01 +0100 +Subject: [PATCH 003/127] 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 +@@ -219,7 +219,11 @@ 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, |