linux-kernel - Re: memcg/cgroup: do not fail fail on pre

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Message-ID: <20121030233356.GA19496@dhcp22.suse.cz>
Date:	Wed, 31 Oct 2012 00:37:36 +0100
From:	Michal Hocko <mhocko@...e.cz>
To:	Tejun Heo <tj@...nel.org>
Cc:	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Li Zefan <lizefan@...wei.com>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Balbir Singh <bsingharora@...il.com>,
	Glauber Costa <glommer@...allels.com>
Subject: Re: memcg/cgroup: do not fail fail on pre_destroy callbacks

On Mon 29-10-12 16:26:02, Tejun Heo wrote:
> Hello, Michal.
> 
> > Tejun is planning to build on top of that and make some more cleanups
> > in the cgroup core (namely get rid of of the whole retry code in
> > cgroup_rmdir).
> 
> I applied 1-3 to the following branch which is based on top of v3.6.
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git cgroup-destroy-updates

Ok, Andrew droped all the patches from his tree and I set up this
branch for automerging to -mm git tree.

> I'll follow up with updates to the destroy path which will replace #4.
> #5 and #6 should be stackable on top.

Could you take care of them and apply those two on top of the first one
which guarantees that css_tryget fails and no new task can appear in the
group (aka #4 without follow up cleanups)? So that Andrew doesn't have
to care about them later.

Thanks!
-- 
Michal Hocko
SUSE Labs
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