linux-kernel - Re: [PATCH 5/12] memcg make page

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Message-ID: <48DDD98D.3050303@linux.vnet.ibm.com>
Date:	Sat, 27 Sep 2008 12:28:21 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"xemul@...nvz.org" <xemul@...nvz.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Hansen <haveblue@...ibm.com>, ryov@...inux.co.jp
Subject: Re: [PATCH 5/12] memcg make page_cgroup->flags atomic

KAMEZAWA Hiroyuki wrote:
> This patch makes page_cgroup->flags to be atomic_ops and define
> functions (and macros) to access it.
> 
> This patch itself makes memcg slow but this patch's final purpose is 
> to remove lock_page_cgroup() and allowing fast access to page_cgroup.
> (And total performance will increase after all patches applied.)
> 

Looks good to me

Acked-by: Balbir Singh <balbir@...ux.vnet.ibm.com>
provided we push in the lockless ones too :)

-- 
	Balbir
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