From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH REPOST RFC cgroup/for-3.7] cgroup: mark subsystems with
	broken hierarchy support and whine if cgroups are nested for them
Date: Thu, 13 Sep 2012 10:21:37 -0700
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To: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>, "Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>, Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>, "Aneesh Kumar K.V" <aneesh.kumar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, Arnaldo Carvalho de Melo <acme-f8uhVLnGfZaxAyOMLChx1axOck334EZe@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Thomas Graf <tgraf-G/eBtMaohhA@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Paul Turner <pjt-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Ingo Molnar <mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

Hello, Glauber.

On Thu, Sep 13, 2012 at 04:01:40PM +0400, Glauber Costa wrote:
> This is getting confusing for me as well, because I don't know if your
> reply was targeted towards me or Michal. As for me, I am in agreement
> with what you did, and I merely replied to Michal's concern and
> suggestion of not warning in the special 1-st level only setups saying I
> side with you.

Oh, I was replying to Michal.  I thought there was behavior difference
with the .use_hierarchy=0 cases that Michal was talking about but I
don't think that's the case and Michal is trying to say that we
shouldn't warn if the configuration behaves identical to
root.use_hierarchy=1 even if it contains some .use_hierarchy=0's,
which I'm fine with.

Thanks.

-- 
tejun