linux-kernel - Re: [patch for-3.2-rc3] cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask

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Message-ID: <alpine.DEB.2.00.1111231751480.9042@chino.kir.corp.google.com>
Date:	Wed, 23 Nov 2011 17:52:08 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Miao Xie <miaox@...fujitsu.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Paul Menage <paul@...lmenage.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch for-3.2-rc3] cpusets: stall when updating mems_allowed
 for mempolicy or disjoint nodemask

On Thu, 24 Nov 2011, Miao Xie wrote:

> Memory compaction will see an empty nodemask and do nothing, and then
> we may fail to get several contiguous pages.
> 

Where do we rely on a consistent nodemask for memory compaction?
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