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Date:	Thu, 22 May 2014 17:47:28 +0400
From:	Vladimir Davydov <vdavydov@...allels.com>
To:	Christoph Lameter <cl@...ux.com>
CC:	<hannes@...xchg.org>, <mhocko@...e.cz>,
	<akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<linux-mm@...ck.org>
Subject: Re: [PATCH RFC 3/3] slub: reparent memcg caches' slabs on memcg
 offline

On Wed, May 21, 2014 at 07:13:21PM -0500, Christoph Lameter wrote:
> On Wed, 21 May 2014, Vladimir Davydov wrote:
> 
> > Do I understand you correctly that the following change looks OK to you?
> 
> Almost. Preemption needs to be enabled before functions that invoke the
> page allocator etc etc.

I need to disable preemption only in slab_free, which never blocks
according to its semantics, so everything should be fine just like that.
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