linux-kernel - Re: [PATCH 05/11] memcg: add null check to page_cgroup

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Message-ID: <4933FA32.3040004@redhat.com>
Date:	Mon, 01 Dec 2008 09:52:34 -0500
From:	Rik van Riel <riel@...hat.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH 05/11] memcg: add null check to page_cgroup_zoneinfo()

KOSAKI Motohiro wrote:
> if CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y, page_cgroup::mem_cgroup can be NULL.
> Therefore null checking is better.
> 
> latter patch use this function.
> 
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Acked-by: Rik van Riel <riel@...hat.com>

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