linux-kernel - Re: [PATCH -mm v2 3/7] cgroup: release css->id after css

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Message-ID: <20150119154215.GA10570@htj.dyndns.org>
Date:	Mon, 19 Jan 2015 10:42:15 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Vladimir Davydov <vdavydov@...allels.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Dave Chinner <david@...morbit.com>,
	Al Viro <viro@...iv.linux.org.uk>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm v2 3/7] cgroup: release css->id after css_free

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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