linux-kernel - Re: [PATCH -mm] do_migrate_pages() calls migrate_to_node() even if task is already on a correct node

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Message-ID: <alpine.DEB.2.00.1203301548070.27435@router.home>
Date:	Fri, 30 Mar 2012 15:49:11 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Larry Woodman <lwoodman@...hat.com>
cc:	KOSAKI Motohiro <kosaki.motohiro@...il.com>, linux-mm@...ck.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Motohiro Kosaki <mkosaki@...hat.com>
Subject: Re: [PATCH -mm] do_migrate_pages() calls migrate_to_node() even if
 task is already on a correct node

On Fri, 30 Mar 2012, Larry Woodman wrote:

> of nodes.
> >   I would think that the 1-1 movement
> > is only useful to do if the number of nodes in both the destination and
> > the source is the same.
> Agreed, thats exactly what this patch does.  are you OK with this change
> then???

Please add to the patch description some explanation how this patch
changes the way page migration does things.

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