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vmpressure: do not check for pending work to prevent from new work 

because it is racy and it doesn't give us much anyway as schedule_work
handles this case already.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Tejun Heo <tj@kernel.org>
Cc: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Li Zefan <lizefan@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michal Hocko 2013-07-31 13:53:50 -07:00 committed by Linus Torvalds
parent 22f2020f84
commit 8e0ed445b3
1 changed files with 1 additions and 1 deletions
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2
mm/vmpressure.c
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@ -246,7 +246,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,
scanned = vmpr->scanned;
spin_unlock(&vmpr->sr_lock);
if (scanned < vmpressure_win || work_pending(&vmpr->work))
if (scanned < vmpressure_win)
return;
schedule_work(&vmpr->work);
}