linux-kernel - Re: [RFI] Shared accounting for memory resource controller

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Message-Id: <20090408151529.fd6626c2.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 8 Apr 2009 15:15:29 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	balbir@...ux.vnet.ibm.com
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	Rik van Riel <riel@...riel.com>,
	Bharata B Rao <bharata.rao@...ibm.com>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFI] Shared accounting for memory resource controller

On Wed, 8 Apr 2009 10:59:04 +0530
Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:


> > no serious intention.
> > Just because you wrote "expect the user to account all cached pages as shared" ;)
> >
> 
> OK, I noticed another thing, our RSS accounting is not RSS per-se, it
> includes only anon RSS, file backed pages are accounted as cached.
> I'll send out a patch to see if we can include anon RSS as well.
>  

I think we can't do it in memcg layer without new-hook because file caches
are added to radix-tree before mapped.

mm struct has anon_rss and file_rss coutners. Then, you can show
sum of total maps of file pages. maybe.

Thanks,
-Kame

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