From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 3/4] memcg: add per cgroup writeback pages accounting
Date: Thu, 22 Aug 2013 15:40:02 -0700
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	<1377165190-24143-1-git-send-email-handai.szj@taobao.com>
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Cc: mhocko@suse.cz, kamezawa.hiroyu@jp.fujitsu.com, gthelen@google.com,
 linux-mm@kvack.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org,
 Sha Zhengju <handai.szj@taobao.com>
To: Sha Zhengju <handai.szj@gmail.com>
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On Thu, 22 Aug 2013 17:53:10 +0800 Sha Zhengju <handai.szj@gmail.com> wrote:

> This patch is to add memcg routines to count writeback pages

Well OK, but why?  What use is the feature?  In what ways are people
suffering due to its absence?

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