linux-kernel - Re: [BUGFIX][PATCH] memcg: fix thresholds with use

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Message-Id: <20100929230654.d7f20d2c.d-nishimura@mtf.biglobe.ne.jp>
Date:	Wed, 29 Sep 2010 23:06:54 +0900
From:	Daisuke Nishimura <d-nishimura@....biglobe.ne.jp>
To:	"Kirill A. Shutsemov" <kirill@...temov.name>
Cc:	linux-mm@...ck.org, Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [BUGFIX][PATCH] memcg: fix thresholds with use_hierarchy == 1

> I think you can simplify this part by using parent_mem_cgroup() like:
> 
> 	parent = parent_mem_cgroup(memcg);
> 	if (!memcg)
           ^^^^^^^^ must be !parent of course :)
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