From 578c8f09c04bce60e2b5bacc69e98aca8f7c2419 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Mon, 20 Apr 2020 09:24:54 -0700 Subject: [PATCH] Revert "scsi: core: run queue if SCSI device queue isn't ready and queue is idle" [ Upstream commit b4fd63f42647110c963d4bfcd526ac48f5a5faff ] This reverts commit 7e70aa789d4a0c89dbfbd2c8a974a4df717475ec. Now that we have the patches ("blk-mq: In blk_mq_dispatch_rq_list() "no budget" is a reason to kick") and ("blk-mq: Rerun dispatching in the case of budget contention") we should no longer need the fix in the SCSI code. Revert it, resolving conflicts with other patches that have touched this code. With this revert (and the two new patches) I can run the script that was in commit 7e70aa789d4a ("scsi: core: run queue if SCSI device queue isn't ready and queue is idle") in a loop with no failure. If I do this revert without the two new patches I can easily get a failure. Signed-off-by: Douglas Anderson Reviewed-by: Ming Lei Acked-by: Martin K. Petersen Signed-off-by: Jens Axboe Stable-dep-of: c31e76bcc379 ("blk-mq: remove stale comment for blk_mq_sched_mark_restart_hctx") Signed-off-by: Sasha Levin --- drivers/scsi/scsi_lib.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 98e363d0025b..490d6c72d8bd 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1645,12 +1645,7 @@ static bool scsi_mq_get_budget(struct blk_mq_hw_ctx *hctx) struct request_queue *q = hctx->queue; struct scsi_device *sdev = q->queuedata; - if (scsi_dev_queue_ready(q, sdev)) - return true; - - if (atomic_read(&sdev->device_busy) == 0 && !scsi_device_blocked(sdev)) - blk_mq_delay_run_hw_queue(hctx, SCSI_QUEUE_DELAY); - return false; + return scsi_dev_queue_ready(q, sdev); } static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx,