From: Ming Lei <ming.lei@canonical.com>
Date: Thu, 25 Sep 2014 15:23:43 +0000 (+0800)
Subject: block: introduce blk_flush_queue to drive flush machinery
X-Git-Tag: fixes-against-v3.18-rc2~51^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c94e1c157a227837b04f02f5edeff8301410ba2;p=pandora-kernel.git

block: introduce blk_flush_queue to drive flush machinery

This patch introduces 'struct blk_flush_queue' and puts all
flush machinery related fields into this structure, so that

	- flush implementation details aren't exposed to driver
	- it is easy to convert to per dispatch-queue flush machinery

This patch is basically a mechanical replacement.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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