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

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Message-ID: <CAAmzW4MbqMevvxk1ibcogr2ED74kR2_46MRX=VO5dLLa4CZkAA@mail.gmail.com>
Date:	Fri, 21 Sep 2012 18:14:10 +0900
From:	JoonSoo Kim <js1304@...il.com>
To:	Glauber Costa <glommer@...allels.com>
Cc:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	kamezawa.hiroyu@...fujitsu.com, devel@...nvz.org,
	Tejun Heo <tj@...nel.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>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [PATCH v3 06/13] memcg: kmem controller infrastructure

>> "*_memcg = memcg" should be executed when "memcg_charge_kmem" is success.
>> "memcg_charge_kmem" return 0 if success in charging.
>> Therefore, I think this code is wrong.
>> If I am right, it is a serious bug that affect behavior of all the patchset.
>
> Which is precisely what it does. ret is a boolean, that will be true
> when charge succeeded (== 0 test)

Ahh...Okay! I didn't see (== 0 test)
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