Re: [PATCH] swap: redirty page if page write fails on swap file

[Mel Gorman]

On Wed, Apr 17, 2013 at 02:11:55PM +0200, Jerome Marchand wrote:
> 
> Since commit 62c230b, swap_writepage() calls direct_IO on swap files.
> However, in that case page isn't redirtied if I/O fails, and is therefore
> handled afterwards as if it has been successfully written to the swap
> file, leading to memory corruption when the page is eventually swapped
> back in.
> This patch sets the page dirty when direct_IO() fails. It fixes a memory
> corruption that happened while using swap-over-NFS.
> 
> Signed-off-by: Jerome Marchand <jmarchan@xxxxxxxxxx>

Acked-by: Mel Gorman <mgorman@xxxxxxx>

Thanks Jerome. I've added Andrew to the cc and this should also be
considered a candidate for 3.8-stable.

-- 
Mel Gorman
SUSE Labs
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