From 7ddab5de5b80d3111f9e6765714e728b2c4f1c07 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@canonical.com>
Date: Thu, 25 Sep 2014 23:23:42 +0800
Subject: [PATCH] block: avoid to use q->flush_rq directly

This patch trys to use local variable to access flush request,
so that we can convert to per-queue flush machinery a bit easier.

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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