linux-kernel - Re: [PATCH 9/12] memcg allocate all page

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Message-ID: <48E30B02.3030506@linux.vnet.ibm.com>
Date:	Wed, 01 Oct 2008 11:00:42 +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 9/12] memcg allocate all page_cgroup at boot

KAMEZAWA Hiroyuki wrote:
> On Wed, 01 Oct 2008 09:33:53 +0530
> Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> 
>> Can we make this patch indepedent of the flags changes and push it in ASAP.
>>
> Need much work....Hmm..rewrite all again ? 
> 

I don't think you'll need to do a major rewrite? Will you? My concern is that
this patch does too much to be a single patch. Consider someone trying to do a
git-bisect to identify a problem? It is hard to review as well and I think the
patch that just removes struct page member can go in faster.

It will be easier to test/debug as well, we'll know if the problem is because of
new page_cgroup being outside struct page rather then guessing if it was the
atomic ops that caused the problem.

-- 
	Balbir
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