linux-kernel - Re: [PATCH 1/2] cgroup: call cgroup_subsys->bind on cgroup subsys initialization

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Message-ID: <20150302171257.GL17694@htj.duckdns.org>
Date:	Mon, 2 Mar 2015 12:12:57 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Vladimir Davydov <vdavydov@...allels.com>
Cc:	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] cgroup: call cgroup_subsys->bind on cgroup subsys
 initialization

On Thu, Feb 19, 2015 at 05:34:46PM +0300, Vladimir Davydov wrote:
> Currently, we call cgroup_subsys->bind only on unmount, remount, and
> when creating a new root on mount. Since the default hierarchy root is
> created in cgroup_init, we will not call cgroup_subsys->bind if the
> default hierarchy is freshly mounted. As a result, some controllers will
> behave incorrectly (most notably, the "memory" controller will not
> enable hierarchy support). Fix this by calling cgroup_subsys->bind right
> after initializing a cgroup subsystem.
> 
> Signed-off-by: Vladimir Davydov <vdavydov@...allels.com>

Applied to cgroup/for-4.0-fixes.

Thanks.

-- 
tejun
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