Message-ID: <4FE95FF0.3000300@parallels.com>
Date: Tue, 26 Jun 2012 11:08:32 +0400
From: Glauber Costa <glommer@parallels.com>
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To: David Rientjes <rientjes@google.com>
CC: <cgroups@vger.kernel.org>, <linux-mm@kvack.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        <linux-kernel@vger.kernel.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Pekka Enberg <penberg@kernel.org>, Michal Hocko <mhocko@suse.cz>,
        Johannes Weiner <hannes@cmpxchg.org>, Christoph Lameter <cl@linux.com>,
        <devel@openvz.org>, <kamezawa.hiroyu@jp.fujitsu.com>,
        Tejun Heo <tj@kernel.org>, Pekka Enberg <penberg@cs.helsinki.fi>,
        Suleiman Souhlal <suleiman@google.com>
Subject: Re: [PATCH 05/11] Add a __GFP_KMEMCG flag
References: <1340633728-12785-1-git-send-email-glommer@parallels.com> <1340633728-12785-6-git-send-email-glommer@parallels.com> <alpine.DEB.2.00.1206252123230.26640@chino.kir.corp.google.com>
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On 06/26/2012 08:25 AM, David Rientjes wrote:
> On Mon, 25 Jun 2012, Glauber Costa wrote:
>
>> >This flag is used to indicate to the callees that this allocation will be
>> >serviced to the kernel. It is not supposed to be passed by the callers
>> >of kmem_cache_alloc, but rather by the cache core itself.
>> >
> Not sure what "serviced to the kernel" means, does this mean that the
> memory will not be accounted for to the root memcg?
>
In this context, it means that is a kernel allocation, not a userspace 
one (but in process context, of course), *and* it is to be accounted a
specific memcg.

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