From: Joe Thornber <ejt@redhat.com>
Date: Fri, 27 Jul 2012 14:08:07 +0000 (+0100)
Subject: dm: allow targets to request flushes regardless of underlying device support
X-Git-Tag: v3.6-rc1~56^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e9c24ed7443d090e369a2eddfa13f7f0b5afbaf;p=pandora-kernel.git

dm: allow targets to request flushes regardless of underlying device support

Allow targets to override the 'supports flush' calculation.

Set 'flush_supported' if a target needs to receive flushes regardless of
whether or not its underlying devices have support.

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