From: Jonathan Brassow <jbrassow@redhat.com>
Date: Fri, 21 Dec 2012 20:23:33 +0000 (+0000)
Subject: dm raid: round region_size to power of two
X-Git-Tag: v3.8-rc1~3^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a0f9aaee02857609d79b20c809c02a8b7c39d06;p=pandora-kernel.git

dm raid: round region_size to power of two

If the user does not supply a bitmap region_size to the dm raid target,
a reasonable size is computed automatically.  If this is not a power of 2,
the md code will report an error later.

This patch catches the problem early and rounds the region_size to the
next power of two.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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