Commit e999dbc2 authored Oct 19, 2014 by Christoph Hellwig

Revert "block: all blk-mq requests are tagged"



This reverts commit fb3ccb5d.

SCSI-2/SPI actually needs the tagged/untagged flag in the request to
work properly.  Revert this patch and add a follow on to set it in
the right place.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Cc: stable@vger.kernel.org

parent ae674792

include/linux/blkdev.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -1136,8 +1136,7 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk)
		/*
		* tag stuff
		*/
		#define blk_rq_tagged(rq) \
		((rq)->mq_ctx \|\| ((rq)->cmd_flags & REQ_QUEUED))
		#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
		extern int blk_queue_start_tag(struct request_queue , struct request );
		extern struct request blk_queue_find_tag(struct request_queue , int);
		extern void blk_queue_end_tag(struct request_queue , struct request );