linux-kernel - Re: [PATCH v8 1/5] mm: introduce a common interface for balloon pages mobility

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Date:	Thu, 23 Aug 2012 23:12:17 -0400
From:	Rik van Riel <riel@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
CC:	Rafael Aquini <aquini@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Mel Gorman <mel@....ul.ie>, Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Minchan Kim <minchan@...nel.org>
Subject: Re: [PATCH v8 1/5] mm: introduce a common interface for balloon pages
 mobility

On 08/23/2012 07:36 PM, Michael S. Tsirkin wrote:

> --->
>
> virtio-balloon: replace page->lru list with page->private.
>
> The point is to free up page->lru for use by compaction.
> Warning: completely untested, will provide tested version
> if we agree on this direction.

A singly linked list is not going to work for page migration,
which needs to get pages that might be in the middle of the
balloon list.

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