linux-kernel - Re: [PATCH -mm v3 2/7] memcg, slab: cleanup memcg cache creation

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Message-Id: <20140221161114.3025c658da0429b7ae9d4985@linux-foundation.org>
Date:	Fri, 21 Feb 2014 16:11:14 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Vladimir Davydov <vdavydov@...allels.com>
Cc:	<mhocko@...e.cz>, <rientjes@...gle.com>, <penberg@...nel.org>,
	<cl@...ux.com>, <glommer@...il.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <devel@...nvz.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH -mm v3 2/7] memcg, slab: cleanup memcg cache creation

On Thu, 20 Feb 2014 11:22:04 +0400 Vladimir Davydov <vdavydov@...allels.com> wrote:

> This patch cleanups the memcg cache creation path as follows:
>  - Move memcg cache name creation to a separate function to be called
>    from kmem_cache_create_memcg(). This allows us to get rid of the
>    mutex protecting the temporary buffer used for the name formatting,
>    because the whole cache creation path is protected by the slab_mutex.
>  - Get rid of memcg_create_kmem_cache(). This function serves as a proxy
>    to kmem_cache_create_memcg(). After separating the cache name
>    creation path, it would be reduced to a function call, so let's
>    inline it.

This patch makes a huge mess when it hits linux-next's e61734c5
("cgroup: remove cgroup->name").  In the vicinity of
memcg_create_kmem_cache().  That isn't the first mess e61734c5 made :(

I think I got it all fixed up - please check the end result in
http://ozlabs.org/~akpm/stuff/.

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