linux-kernel - Re: [BUGFIX] memcg: fix res_counter_read_u64 lock aware (Was Re: [PATCH] oom: handle overflow in mem_cgroup_out_of

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Date:	Wed, 26 Jan 2011 17:55:28 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Greg Thelen <gthelen@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	David Rientjes <rientjes@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [BUGFIX] memcg: fix res_counter_read_u64 lock aware (Was Re:
 [PATCH] oom: handle overflow in mem_cgroup_out_of_memory()

On Thu, 27 Jan 2011 10:34:31 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> I wonder making memcg's counter to use 32bit and record usage in the number
> of pages may be a simple way...

That would be better, yes.
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