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Date: Mon, 2 Mar 2015 12:33:15 -0500
From: Johannes Weiner <hannes@cmpxchg.org>
To: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>, Michal Hocko <mhocko@suse.cz>,
        linux-mm@kvack.org, cgroups@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] memcg: disable hierarchy support if bound to the
 legacy cgroup hierarchy
Message-ID: <20150302173315.GA24664@phnom.home.cmpxchg.org>
References: <131af5f5ee0eec55d0f94a785db4be04baf01f51.1424356325.git.vdavydov@parallels.com>
 <421fb6bbff04eb70b8ad82b51efd373f0b4d170f.1424356325.git.vdavydov@parallels.com>
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On Mon, Mar 02, 2015 at 12:13:23PM -0500, Tejun Heo wrote:
> On Thu, Feb 19, 2015 at 05:34:47PM +0300, Vladimir Davydov wrote:
> > If the memory cgroup controller is initially mounted in the scope of the
> > default cgroup hierarchy and then remounted to a legacy hierarchy, it
> > will still have hierarchy support enabled, which is incorrect. We should
> > disable hierarchy support if bound to the legacy cgroup hierarchy.
> > 
> > Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
> 
> Johannes, Michal, can you guys pick this up?

Yup, will do.