From mboxrd@z Thu Jan  1 00:00:00 1970
From: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Subject: Re: [PATCH v2] memcg: execute partial memcg freeing in mem_cgroup_destroy
Date: Fri, 17 Aug 2012 10:36:05 +0400
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To: Greg Thelen <gthelen-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>

On 08/17/2012 10:37 AM, Greg Thelen wrote:
> I am by no means a swap expert, so I may be heading in the weeds.  But I
> think that a swapped out page is not necessarily in any memcg lru.  So
> the mem_cgroup_pre_destroy() call to mem_cgroup_force_empty() will not
> necessarily see swapped out pages.
> 
> I think this demonstrates the problem.
hummm, hummm... all right.

I'll take a look at that today

Thanks Greg