linux-kernel - Re: [PATCH 6/8] memcg: make mem_cgroup_reparent

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Message-ID: <50939EAF.9030907@jp.fujitsu.com>
Date:	Fri, 02 Nov 2012 19:21:35 +0900
From:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Tejun Heo <tj@...nel.org>
CC:	lizefan@...wei.com, hannes@...xchg.org, mhocko@...e.cz,
	bsingharora@...il.com, containers@...ts.linux-foundation.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] memcg: make mem_cgroup_reparent_charges non failing

(2012/11/01 4:44), Tejun Heo wrote:
> From: Michal Hocko <mhocko@...e.cz>
> 
> Now that pre_destroy callbacks are called from the context where neither
> any task can attach the group nor any children group can be added there
> is no other way to fail from mem_cgroup_pre_destroy.
> mem_cgroup_pre_destroy doesn't have to take a reference to memcg's css
> because all css' are marked dead already.
> 
> tj: Remove now unused local variable @cgrp from
>      mem_cgroup_reparent_charges().
> 
> Signed-off-by: Michal Hocko <mhocko@...e.cz>
> Reviewed-by: Glauber Costa <glommer@...allels.com>
> Signed-off-by: Tejun Heo <tj@...nel.org>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>



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