From: Mike Christie <michaelc@cs.wisc.edu>
Date: Fri, 1 Mar 2013 22:45:48 +0000 (+0000)
Subject: dm: fix limits initialization when there are no data devices
X-Git-Tag: v3.9-rc1~19^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=87eb5b21d92a92ac2da3163039d62df88c2b8422;p=pandora-kernel.git

dm: fix limits initialization when there are no data devices

dm_calculate_queue_limits will first reset the provided limits to
defaults using blk_set_stacking_limits; whereby defeating the purpose of
retaining the original live table's limits -- as was intended via commit
3ae706561637331aa578e52bb89ecbba5edcb7a9 ("dm: retain table limits when
swapping to new table with no devices").

Fix this improper limits initialization (in the no data devices case) by
avoiding the call to dm_calculate_queue_limits.

[patch header revised by Mike Snitzer]

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # v3.6+
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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