From 428e4698642794444cdb26c148a827f22c28d546 Mon Sep 17 00:00:00 2001
From: Joe Thornber <ejt@redhat.com>
Date: Mon, 3 Mar 2014 10:37:24 -0500
Subject: [PATCH] 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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Reading git-format-patch failed