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Message-ID: <4947389D.1050708@cn.fujitsu.com>
Date:	Tue, 16 Dec 2008 13:11:57 +0800
From:	Miao Xie <miaox@...fujitsu.com>
To:	Paul Menage <menage@...gle.com>
CC:	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Why are the pages not migrated to current cpuset after 'memory_migrate'
 is set true

Hi, Paul

I found the pages that task had allocated to it on nodes in its previous cpuset
were not migrated to the tasks' current cpuset after 'memory_migrate' was set
true. It looks strange for users. Why are the pages not migrated to current
cpuset after 'memory_migrate' is set true?

Step I did
1, allocate pages on cpuset (mems is 0, memory_migrate is 0)
2, change cpuset's mems (mems: 0 -> 1)
3, change cpuset's memory_migrate(memory_migrate: 0 -> 1) 
 
Regards
Miao Xie

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