linux-kernel - Re: [PATCH v3 06/13] memcg: kmem controller infrastructure

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Message-ID: <20121003221151.GC19248@localhost>
Date:	Thu, 4 Oct 2012 07:11:51 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Glauber Costa <glommer@...allels.com>
Cc:	Michal Hocko <mhocko@...e.cz>, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org, kamezawa.hiroyu@...fujitsu.com,
	devel@...nvz.org, linux-mm@...ck.org,
	Suleiman Souhlal <suleiman@...gle.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [PATCH v3 06/13] memcg: kmem controller infrastructure

Hello, Glauber.

Sorry about late replies.  I'be been traveling for the Korean
thanksgiving holidays.

On Mon, Oct 01, 2012 at 12:28:28PM +0400, Glauber Costa wrote:
> > That synchronous ref draining is going away.  Maybe we can do that
> > before kmemcg?  Michal, do you have some timeframe on mind?
> 
> Since you said yourself in other points in this thread that you are fine
> with some page references outliving the cgroup in the case of slab, this
> is a situation that comes with the code, not a situation that was
> incidentally there, and we're making use of.

Hmmm?  Not sure what you're trying to say but I wanted to say that
this should be okay once the scheduled memcg pre_destroy change
happens and nudge Michal once more.

Thanks.

-- 
tejun
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