From: Mikulas Patocka <mpatocka@redhat.com>
Date: Thu, 12 Aug 2010 03:14:21 +0000 (+0100)
Subject: dm stripe: optimize sector division
X-Git-Tag: v2.6.36-rc1~51^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c96053b767d494d7c30e2be68097ac9defa9403f;p=pandora-kernel.git

dm stripe: optimize sector division

Optimize sector division: If the number of stripes is a power of two,
we can do shift and mask instead of division.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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