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linux/drivers/md/dm-thin.c
Joe Thornber c822ed967c dm thin: grab a virtual cell before looking up the mapping 
Avoids normal IO racing with discard.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2014-11-04 13:05:53 -05:00

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