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Date: Thu, 03 Apr 2008 10:02:25 +0530
From: Balbir Singh <balbir@linux.vnet.ibm.com>
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To: Paul Menage <menage@google.com>
CC: Pavel Emelianov <xemul@openvz.org>, Hugh Dickins <hugh@veritas.com>,
       Sudhir Kumar <skumar@linux.vnet.ibm.com>,
       YAMAMOTO Takashi <yamamoto@valinux.co.jp>, lizf@cn.fujitsu.com,
       linux-kernel@vger.kernel.org, taka@valinux.co.jp, linux-mm@kvack.org,
       David Rientjes <rientjes@google.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [RFC][-mm] Add an owner to the mm_struct (v4)
References: <20080401124312.23664.64616.sendpatchset@localhost.localdomain> <47F3D62E.4070808@linux.vnet.ibm.com> <6599ad830804021253y6bf3b37y9bf1167b63c32e70@mail.gmail.com> <47F4577E.5060905@linux.vnet.ibm.com> <6599ad830804022110h2090f3efg7c6173df8185679e@mail.gmail.com>
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Paul Menage wrote:
> On Wed, Apr 2, 2008 at 9:05 PM, Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
>>  I checked to see that cgroup_exit is called after mm_update_new_owner(). We call
>>  mm_update_new_owner() from exit_mm(). I did not check for current->cgroups !=
>>  new_owner->cgroups, since I did not want to limit the callbacks.
> 
> No cgroup subsystem should be concerned about mm ownership changes
> between tasks in the same cgroup. So I think that's a valid and useful
> optimization.
> 

Hmm. probably.. I'll do that check. Let me post v5 with these changes

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL