From: NeilBrown <neilb@suse.de>
Date: Wed, 27 Oct 2010 04:37:41 +0000 (+1100)
Subject: md: unplug writes to external bitmaps.
X-Git-Tag: v2.6.37-rc1~43^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be2a2656eef95c32ca73e7a6a8c85671aa92e3f1;p=pandora-kernel.git

md: unplug writes to external bitmaps.

When writing to an 'external' bitmap we don't currently unplug the
device before waiting, so we can get a 3msec delay each time;
So use REQ_UNPLUG to force and unplug.

Signed-off-by: NeilBrown <neilb@suse.de>
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