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scsi: Remove a blk_mq_run_hw_queues() call

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blk_mq_kick_requeue_list() calls blk_mq_run_hw_queues() asynchronously.
Leave out the direct blk_mq_run_hw_queues() call. This patch causes
scsi_run_queue() to call blk_mq_run_hw_queues() asynchronously instead
of synchronously. Since scsi_run_queue() is not called from the hot I/O
submission path, this patch does not affect the hot path.

This patch prepares for allowing blk_mq_run_hw_queue() to sleep if
BLK_MQ_F_BLOCKING has been set. scsi_run_queue() may be called from
atomic context and must not sleep. Hence the removal of the
blk_mq_run_hw_queues(q, false) call. See also scsi_unblock_requests().

Cc: "Martin K. Petersen" <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: "Martin K. Petersen" <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Bart Van Assche
2023-07-24 20:13:12 -06:00
committed by Jens Axboe
parent b5ca9acff5
commit d42e2e3448
1 changed files with 1 additions and 1 deletions
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drivers/scsi/scsi_lib.c
+1 -1
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@@ -447,8 +447,8 @@ static void scsi_run_queue(struct request_queue *q)
if (!list_empty(&sdev->host->starved_list))
scsi_starved_list_run(sdev->host);
/* Note: blk_mq_kick_requeue_list() runs the queue asynchronously. */
blk_mq_kick_requeue_list(q);
blk_mq_run_hw_queues(q, false);
}
void scsi_requeue_run_queue(struct work_struct *work)