From: shaohua.li@intel.com <shaohua.li@intel.com>
Date: Fri, 6 May 2011 17:34:32 +0000 (-0600)
Subject: block: add a non-queueable flush flag
X-Git-Tag: v2.6.39.1~141
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=81b5f4969a360c24882a44e91e6177d2d79f933f;p=pandora-kernel.git

block: add a non-queueable flush flag

commit f3876930952390a31c3a7fd68dd621464a36eb80 upstream.

flush request isn't queueable in some drives. Add a flag to let driver
notify block layer about this. We can optimize flush performance with the
knowledge.

Stable: 2.6.39 only

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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