linux-kernel - Re: [PATCH] memcg: fix mutex not unlocked on memcg_create_kmem

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Message-ID: <alpine.DEB.2.02.1401301403090.15271@chino.kir.corp.google.com>
Date:	Thu, 30 Jan 2014 14:04:12 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Vladimir Davydov <vdavydov@...allels.com>, mhocko@...e.cz,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memcg: fix mutex not unlocked on memcg_create_kmem_cache
 fail path

On Thu, 30 Jan 2014, Andrew Morton wrote:

> > Yeah, it shouldn't be temporary it should be the one and only allocation.  
> > We should construct the name in memcg_create_kmem_cache() and be done with 
> > it.
> 
> Could.  That would require converting memcg_create_kmem_cache() to take 
> a va_list and call kasprintf() on it.
> 

Why?  We already construct the name in memcg_create_kmem_cache() 
appropriately, we just want to avoid the kstrdup() in 
kmem_cache_create_memcg() since it's pointless like my patch does.
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