mem_cgroup_move_account() begins with "anon = PageAnon(page)", and
then anon is used thereafter: testing PageAnon(page) in the middle
makes the reader wonder if there's some race to guard against - no.
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 3.3-rc5-next/mm/memcontrol.c 2012-02-27 09:56:59.072001463 -0800
+++ linux/mm/memcontrol.c 2012-02-28 20:45:43.488100423 -0800
@@ -2560,7 +2560,7 @@ static int mem_cgroup_move_account(struc
move_lock_mem_cgroup(from, &flags);
- if (!PageAnon(page) && page_mapped(page)) {
+ if (!anon && page_mapped(page)) {
/* Update mapped_file data for mem_cgroup */
preempt_disable();
__this_cpu_dec(from->stat->count[MEM_CGROUP_STAT_FILE_MAPPED]);
--
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