scsi_dh: add a common helper to get a scsi_device from a request_queue
authorChristoph Hellwig <hch@lst.de>
Thu, 27 Aug 2015 12:17:00 +0000 (14:17 +0200)
committerJames Bottomley <JBottomley@Odin.com>
Fri, 28 Aug 2015 20:14:57 +0000 (13:14 -0700)
commite959ed9a44c5239863ca6db42cb37130bee3c7a3
tree248382f514a1eb44b910886488ae94e056890957
parentee14c674e8fc57251223054fb52dc0ecfe711028
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>
drivers/scsi/scsi_dh.c