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Date:	Fri, 29 May 2015 09:10:55 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
	Oleg Nesterov <oleg@...hat.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC 3/3] memcg: get rid of mm_struct::owner

On Fri, May 29, 2015 at 02:08:38PM +0200, Michal Hocko wrote:
> > I suppose that making mm always follow the threadgroup leader should
> > be fine, right? 
> 
> That is the plan.

Cool.

> > While this wouldn't make any difference in the unified hierarchy,
> 
> Just to make sure I understand. "wouldn't make any difference" because
> the API is not backward compatible right?

Hmm... because it's always per-process.  If any thread is going, the
whole process is going together.

> > I think this would make more sense for traditional hierarchies.
> 
> Yes I believe so.

Thanks.

-- 
tejun
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