linux-kernel - Re: [patch for-3.12] mm, memcg: protect mem_cgroup_read

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Date:	Tue, 01 Oct 2013 20:47:01 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	cgroups@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, kosaki.motohiro@...il.com
Subject: Re: [patch for-3.12] mm, memcg: protect mem_cgroup_read_events for
 cpu hotplug

(10/1/13 7:31 PM), David Rientjes wrote:
> for_each_online_cpu() needs the protection of {get,put}_online_cpus() so
> cpu_online_mask doesn't change during the iteration.
>
> Signed-off-by: David Rientjes <rientjes@...gle.com>

Acked-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

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