linux-kernel - Re: [PATCH v4 06/14] memcg: kmem controller infrastructure

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Message-ID: <20121011125603.GE29295@dhcp22.suse.cz>
Date:	Thu, 11 Oct 2012 14:56:03 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Glauber Costa <glommer@...allels.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	Suleiman Souhlal <suleiman@...gle.com>,
	Tejun Heo <tj@...nel.org>, cgroups@...r.kernel.org,
	kamezawa.hiroyu@...fujitsu.com,
	Johannes Weiner <hannes@...xchg.org>,
	Greg Thelen <gthelen@...gle.com>, devel@...nvz.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH v4 06/14] memcg: kmem controller infrastructure

On Thu 11-10-12 14:42:12, Michal Hocko wrote:
[...]
> 	/*
> 	 * Keep reference on memcg while the page is charged to prevent
> 	 * group from vanishing because allocation can outlive their
> 	 * tasks. The reference is dropped in __memcg_kmem_uncharge_page
> 	 */
> 
> please
> > +	mem_cgroup_get(memcg);

Ahh, this will go away. The it doesn't make much sense to add the
comment here.
-- 
Michal Hocko
SUSE Labs
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