From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC][PATCH 5/7] cgroup: make sure parent won't be destroyed
 before its children
Date: Thu, 4 Apr 2013 08:22:13 -0700
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To: Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>
Cc: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>, KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>

On Thu, Apr 04, 2013 at 05:20:28PM +0200, Michal Hocko wrote:
> > But what harm does an additional reference do?
> 
> No harm at all. I just wanted to be sure that this is not yet another
> "for memcg" hack. So if this is useful for other controllers then I have
> no objections of course.

I think it makes sense in general, so let's do it in cgroup core.  I
suppose it'd be easier for this to be routed together with other memcg
changes?

Thanks.

-- 
tejun