linux-kernel - Re: [PATCH 1/6] memcg: split mem_cgroup_force_empty into reclaiming and reparenting parts

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Message-ID: <20121018215607.GN13370@google.com>
Date:	Thu, 18 Oct 2012 14:56:07 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org, Li Zefan <lizefan@...wei.com>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Balbir Singh <bsingharora@...il.com>
Subject: Re: [PATCH 1/6] memcg: split mem_cgroup_force_empty into
 reclaiming and reparenting parts

On Wed, Oct 17, 2012 at 03:30:43PM +0200, Michal Hocko wrote:
> mem_cgroup_force_empty did two separate things depending on free_all
> parameter from the very beginning. It either reclaimed as many pages as
> possible and moved the rest to the parent or just moved charges to the
> parent. The first variant is used as memory.force_empty callback while
> the later is used from the mem_cgroup_pre_destroy.
> 
> The whole games around gotos are far from being nice and there is no
> reason to keep those two functions inside one. Let's split them and
> also move the responsibility for css reference counting to their callers
> to make to code easier.
> 
> This patch doesn't have any functional changes.
> 
> Signed-off-by: Michal Hocko <mhocko@...e.cz>

Reviewed-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun
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