From: NeilBrown <neilb@suse.de>
Date: Mon, 19 Nov 2012 02:11:26 +0000 (+1100)
Subject: md/raid5: round discard alignment up to power of 2.
X-Git-Tag: v3.7-rc7~8^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ac6875eeb97a49bad7bc8d56b5ec935904fc6e7;p=pandora-kernel.git

md/raid5: round discard alignment up to power of 2.

blkdev_issue_discard currently assumes that the granularity
is a power of 2.  So in raid5, round the chosen number up to
avoid embarrassment.

Cc: Shaohua Li <shli@kernel.org>
Signed-off-by: NeilBrown <neilb@suse.de>
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