Commit 8e0ed445 authored Jul 31, 2013 by Michal Hocko Committed by Linus Torvalds Jul 31, 2013

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>

parent 22f2020f

mm/vmpressure.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}