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linux/drivers/md/raid5.c
NeilBrown 7747ae24bb md/raid5: don't record new size if resize_stripes fails. 
[ Upstream commit 6e9eac2dce ]

If any memory allocation in resize_stripes fails we will return
-ENOMEM, but in some cases we update conf->pool_size anyway.

This means that if we try again, the allocations will be assumed
to be larger than they are, and badness results.

So only update pool_size if there is no error.

This bug was introduced in 2.6.17 and the patch is suitable for
-stable.

Fixes: ad01c9e375 ("[PATCH] md: Allow stripes to be expanded in preparation for expanding an array")
Cc: stable@vger.kernel.org (v2.6.17+)
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2015-06-10 13:42:37 -04:00

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