From: Shaohua Li <shli@kernel.org>
Date: Fri, 30 May 2014 14:06:42 +0000 (-0600)
Subject: blk-mq: blk_mq_tag_to_rq should handle flush request
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~47^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2230237500821aedfcf2bba2a79d9cbca389233c;p=pandora-kernel.git

blk-mq: blk_mq_tag_to_rq should handle flush request

flush request is special, which borrows the tag from the parent
request. Hence blk_mq_tag_to_rq needs special handling to return
the flush request from the tag.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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