tree eef99b324201b21de358dffdab8bfc0453358d5f
parent e2eddf4d530df745019fded0fedfb78f6d3e33ca
author Christoph Hellwig <hch@lst.de> 1415020142 +0100
committer Christoph Hellwig <hch@lst.de> 1415787583 +0100

scsi: always assign block layer tags if enabled

Allow a driver to ask for block layer tags by setting .use_blk_tags in the
host template, in which case it will always see a valid value in
request->tag, similar to the behavior when using blk-mq.  This means even
SCSI "untagged" commands will now have a tag, which is especially useful
when using a host-wide tag map.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>