tree 248382f514a1eb44b910886488ae94e056890957
parent ee14c674e8fc57251223054fb52dc0ecfe711028
author Christoph Hellwig <hch@lst.de> 1440677820 +0200
committer James Bottomley <JBottomley@Odin.com> 1440792897 -0700

scsi_dh: add a common helper to get a scsi_device from a request_queue

And cleanup the various messy opencoded versions of this.  Note that this
moves the sdev_state checks outside the queue_lock coverage, but as
we don't hold the lock over the activation they are only advisory anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>