linux-kernel - Re: [PATCH v2 04/11] kmem accounting basic infrastructure

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Message-ID: <000001392b526a8a-3ec5f35e-405f-47f5-a7c1-ec0cae473fe9-000000@email.amazonses.com>
Date:	Wed, 15 Aug 2012 17:26:25 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Glauber Costa <glommer@...allels.com>
cc:	Michal Hocko <mhocko@...e.cz>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, cgroups@...r.kernel.org, devel@...nvz.org,
	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	kamezawa.hiroyu@...fujitsu.com,
	David Rientjes <rientjes@...gle.com>,
	Pekka Enberg <penberg@...nel.org>
Subject: Re: [PATCH v2 04/11] kmem accounting basic infrastructure

On Wed, 15 Aug 2012, Glauber Costa wrote:

> Remember we copy over the metadata and create copies of the caches
> per-memcg. Therefore, a dentry belongs to a memcg if it was allocated
> from the slab pertaining to that memcg.

The dentry could be used by other processes in the system though. F.e.
directory names could easily be created by one process and then used by a
multitude of others.

> It is not 100 % accurate, but it is good enough.

Lets hope that is true.

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