linux-kernel - Re: [PATCH 3/7] memcg : fix mem_cgroup_check_under

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Message-Id: <20110121164530.4cf9d01f.nishimura@mxp.nes.nec.co.jp>
Date:	Fri, 21 Jan 2011 16:45:30 +0900
From:	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hannes@...xchg.org" <hannes@...xchg.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
Subject: Re: [PATCH 3/7] memcg : fix mem_cgroup_check_under_limit

On Fri, 21 Jan 2011 15:41:41 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> 
> Current memory cgroup's code tends to assume page_size == PAGE_SIZE
> but THP does HPAGE_SIZE charge.
> 
> This is one of fixes for supporing THP. This modifies
> mem_cgroup_check_under_limit to take page_size into account.
> 
> Total fixes for do_charge()/reclaim memory will follow this patch.
> 
> TODO: By this reclaim function can get page_size as argument.
> So...there may be something should be improvoed.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Acked-by: Daisuke Nishimura <nishimura@....nes.nec.co.jp>

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