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

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This reverts commit fb3ccb5da7.

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
This commit is contained in:
Christoph Hellwig 2014-10-19 17:13:57 +02:00
parent ae674792c3
commit e999dbc254
1 changed files with 1 additions and 2 deletions
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3
include/linux/blkdev.h
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@ -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 *);