scsi: set REQ_QUEUE for the blk-mq case

To generate the right SPI tag messages we need to properly set
QUEUE_FLAG_QUEUED in the request_queue and mirror it to the
request.

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

2 files changed, 9 insertions, 4 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 9eff8a375132..50a6e1ac8d9c 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1893,6 +1893,11 @@ static int scsi_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req,
                 blk_mq_start_request(req);
         }
 
+        if (blk_queue_tagged(q))
+                req->cmd_flags |= REQ_QUEUED;
+        else
+                req->cmd_flags &= ~REQ_QUEUED;
+
         scsi_init_cmd_errh(cmd);
         cmd->scsi_done = scsi_mq_done;
 
diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index e64583560701..56ed843969ca 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -67,8 +67,9 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
         if (!sdev->tagged_supported)
                 return;
 
-        if (!shost_use_blk_mq(sdev->host) &&
-            !blk_queue_tagged(sdev->request_queue))
+        if (shost_use_blk_mq(sdev->host))
+                queue_flag_set_unlocked(QUEUE_FLAG_QUEUED, sdev->request_queue);
+        else if (!blk_queue_tagged(sdev->request_queue))
                 blk_queue_init_tags(sdev->request_queue, depth,
                                     sdev->host->bqt);
 
@@ -81,8 +82,7 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
  **/
 static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
 {
-        if (!shost_use_blk_mq(sdev->host) &&
-            blk_queue_tagged(sdev->request_queue))
+        if (blk_queue_tagged(sdev->request_queue))
                 blk_queue_free_tags(sdev->request_queue);
         scsi_adjust_queue_depth(sdev, 0, depth);
 }