linux-kernel - Re: [PATCH 3/6] memcg: track shared inodes with dirty pages

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Date:	Thu, 15 Jan 2015 13:55:43 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Konstantin Khebnikov <khlebnikov@...dex-team.ru>
Cc:	linux-mm@...ck.org, cgroups@...r.kernel.org,
	Roman Gushchin <klamm@...dex-team.ru>, Jan Kara <jack@...e.cz>,
	Dave Chinner <david@...morbit.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	koct9i@...il.com
Subject: Re: [PATCH 3/6] memcg: track shared inodes with dirty pages

On Thu, Jan 15, 2015 at 09:49:14PM +0300, Konstantin Khebnikov wrote:
> From: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
> 
> Inode is owned only by one memory cgroup, but if it's shared it might
> contain pages from multiple cgroups. This patch detects this situation
> in memory reclaiemer and marks dirty inode with flag I_DIRTY_SHARED
> which is cleared only when data is completely written. Memcg writeback
> always writes such inodes.
> 
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>

This conflicts with the writeback cgroup support patchset which will
solve the writeback and memcg problem a lot more comprehensively.

 http://lkml.kernel.org/g/1420579582-8516-1-git-send-email-tj@kernel.org

Thanks.

-- 
tejun
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