linux-kernel - Re: [PATCH v2 6/6] mm: workingset: make shadow node shrinker memcg aware

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Message-ID: <20160209231505.GB32427@cmpxchg.org>
Date:	Tue, 9 Feb 2016 18:15:05 -0500
From:	Johannes Weiner <hannes@...xchg.org>
To:	Vladimir Davydov <vdavydov@...tuozzo.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/6] mm: workingset: make shadow node shrinker memcg
 aware

On Tue, Feb 09, 2016 at 04:55:54PM +0300, Vladimir Davydov wrote:
> Workingset code was recently made memcg aware, but shadow node shrinker
> is still global. As a result, one small cgroup can consume all memory
> available for shadow nodes, possibly hurting other cgroups by reclaiming
> their shadow nodes, even though reclaim distances stored in its shadow
> nodes have no effect. To avoid this, we need to make shadow node
> shrinker memcg aware.
> 
> Signed-off-by: Vladimir Davydov <vdavydov@...tuozzo.com>

w00t!

Acked-by: Johannes Weiner <hannes@...xchg.org>