linux-kernel - fix blk-mq for SPI hosts

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Message-Id: <1413731638-28305-1-git-send-email-hch@lst.de>
Date:	Sun, 19 Oct 2014 17:13:56 +0200
From:	Christoph Hellwig <hch@....de>
To:	Jens Axboe <axboe@...nel.dk>, Meelis Roos <mroos@...ux.ee>
Cc:	David Miller <davem@...emloft.net>, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: fix blk-mq for SPI hosts

Fix the assumption that we can treat all blk-mq requests as tagged.  For
traditional SCSI that's wrong, as being tagged has a very explicit meaning
on the wire.

This is a little bit different from the version Meelis tested earlier, but
the concept is the same.  I didn't want to add a Tested-by tag as it's
different enough, though.

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