Date: Fri, 9 Jan 2009 11:31:09 +0530
From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
       kamezawa.hiroyu@jp.fujitsu.com, lizf@cn.fujitsu.com, menage@google.com
Subject: Re: [RFC][PATCH 2/4] memcg: fix error path of
	mem_cgroup_move_parent
Message-ID: <20090109060109.GG9737@balbir.in.ibm.com>
Reply-To: balbir@linux.vnet.ibm.com
References: <20090108190818.b663ce20.nishimura@mxp.nes.nec.co.jp> <20090108191445.cd860c37.nishimura@mxp.nes.nec.co.jp> <20090109051522.GC9737@balbir.in.ibm.com> <20090109143346.5ad2b971.nishimura@mxp.nes.nec.co.jp>
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* Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> [2009-01-09 14:33:46]:

> > Looks good to me, just out of curiousity how did you catch this error?
> > Through review or testing? 
> > 
> Through testing.
> 
> I got "an unremovable directory" sometimes, which had res.usage remained
> even after all lru lists had become empty, or which had ref counts remained
> even after res.usage had become 0.
> And tracked down the cause of this problem .
>

Thanks,

Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> 

-- 
	Balbir
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