From: Joe Thornber <ejt@redhat.com>
Date: Mon, 3 Mar 2014 15:37:24 +0000 (-0500)
Subject: dm bitset: only flush the current word if it has been dirtied
X-Git-Tag: v3.15-rc1~69^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=428e4698642794444cdb26c148a827f22c28d546;p=pandora-kernel.git

dm bitset: only flush the current word if it has been dirtied

This change offers a big performance boost for dm-era.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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