Re: [PATCH 14/14] mm,migration: Allow the migration ofPageSwapCache pages

From: KAMEZAWA Hiroyuki
Date: Tue Apr 06 2010 - 02:58:46 EST

On Fri, 2 Apr 2010 17:02:48 +0100
Mel Gorman <mel@xxxxxxxxx> wrote:

> PageAnon pages that are unmapped may or may not have an anon_vma so are
> not currently migrated. However, a swap cache page can be migrated and
> fits this description. This patch identifies page swap caches and allows
> them to be migrated but ensures that no attempt to made to remap the pages
> would would potentially try to access an already freed anon_vma.
> Signed-off-by: Mel Gorman <mel@xxxxxxxxx>

Seems nice to me.

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

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