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

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Message-ID: <xr93obmcb2sh.fsf@gthelen.mtv.corp.google.com>
Date:	Wed, 15 Aug 2012 08:19:58 -0700
From:	Greg Thelen <gthelen@...gle.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Michal Hocko <mhocko@...e.cz>,
	Glauber Costa <glommer@...allels.com>,
	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>, yinghan@...gle.com
Subject: Re: [PATCH v2 04/11] kmem accounting basic infrastructure

On Wed, Aug 15 2012, Christoph Lameter wrote:

> On Wed, 15 Aug 2012, Michal Hocko wrote:
>
>> > That is not what the kernel does, in general. We assume that if he wants
>> > that memory and we can serve it, we should. Also, not all kernel memory
>> > is unreclaimable. We can shrink the slabs, for instance. Ying Han
>> > claims she has patches for that already...
>>
>> Are those patches somewhere around?
>
> You can already shrink the reclaimable slabs (dentries / inodes) via
> calls to the subsystem specific shrinkers. Did Ying Han do anything to
> go beyond that?

cc: Ying

The Google shrinker patches enhance prune_dcache_sb() to limit dentry
pressure to a specific memcg.
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