linux-kernel - Re: [PATCH v3 13/28] slub: create duplicate cache

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Message-ID: <alpine.DEB.2.00.1205291222360.8495@router.home>
Date:	Tue, 29 May 2012 12:25:12 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Glauber Costa <glommer@...allels.com>
cc:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	linux-mm@...ck.org, kamezawa.hiroyu@...fujitsu.com,
	Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
	Greg Thelen <gthelen@...gle.com>,
	Suleiman Souhlal <suleiman@...gle.com>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>, devel@...nvz.org,
	David Rientjes <rientjes@...gle.com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH v3 13/28] slub: create duplicate cache

On Tue, 29 May 2012, Glauber Costa wrote:

> I will try to at least have the page accounting done in a consistent way. How
> about that?

Ok. What do you mean by "consistent"? Since objects and pages can be used
in a shared way and since accounting in many areas of the kernel is
intentional fuzzy to avoid performance issues there is not that much of a
requirement for accuracy. We have problems even just defining what the
exact set of pages belonging to a task/process is.

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