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Date: Mon, 19 Jan 2015 10:42:15 -0500
From: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH -mm v2 3/7] cgroup: release css->id after css_free
Message-ID: <20150119154215.GA10570@htj.dyndns.org>
References: <cover.1421664712.git.vdavydov@parallels.com>
 <4d7447a920522c1085ff96c08b2be71e0eb5d896.1421664712.git.vdavydov@parallels.com>
 <20150119143001.GH8140@htj.dyndns.org>
 <20150119151854.GA28598@esperanza>
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Sender: owner-linux-mm@kvack.org
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To: Vladimir Davydov <vdavydov@parallels.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@suse.cz>, Christoph Lameter <cl@linux.com>, Pekka Enberg <penberg@kernel.org>, David Rientjes <rientjes@google.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Dave Chinner <david@fromorbit.com>, Al Viro <viro@zeniv.linux.org.uk>, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org

On Mon, Jan 19, 2015 at 06:18:54PM +0300, Vladimir Davydov wrote:
> Could you please elaborate this? I mean, what problems do you think can
> arise if we release css->id a little bit (one grace period) later?
> 
> Of course, I can introduce yet another id per memcg, but I think we have
> css->id to avoid code duplication in controllers.

lol, my brainfart.  Never mind.  I thought you were moving it to
offline.  Please feel free to add my acked-by.

Thanks.

-- 
tejun

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