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From:   Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
To:     axboe@kernel.dk
Cc:     linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
        linux-ide@vger.kernel.org, linux-mmc@vger.kernel.org,
        linux-nvme@lists.infradead.org, linux-nfs@vger.kernel.org,
        hch@infradead.org, Guoqing Jiang <guoqing.jiang@cloud.ionos.com>,
        target-devel@vger.kernel.org
Subject: [PATCH V3 1/2] block: remove unnecessary argument from blk_execute_rq_nowait
Date:   Mon, 25 Jan 2021 05:49:57 +0100
Message-Id: <1611550198-17142-2-git-send-email-guoqing.jiang@cloud.ionos.com>
In-Reply-To: <1611550198-17142-1-git-send-email-guoqing.jiang@cloud.ionos.com>
References: <1611550198-17142-1-git-send-email-guoqing.jiang@cloud.ionos.com>
Precedence: bulk

The 'q' is not used since commit a1ce35fa4985 ("block: remove dead
elevator code"), also update the comment of the function.

And more importantly it never really was needed to start with given
that we can trivial derive it from struct request.

Cc: target-devel@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Cc: linux-ide@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: linux-nfs@vger.kernel.org
Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
---
 block/blk-exec.c                   | 10 ++++------
 drivers/block/sx8.c                |  4 ++--
 drivers/nvme/host/core.c           |  4 ++--
 drivers/nvme/host/lightnvm.c       |  2 +-
 drivers/nvme/host/pci.c            |  4 ++--
 drivers/nvme/target/passthru.c     |  2 +-
 drivers/scsi/scsi_error.c          |  2 +-
 drivers/scsi/sg.c                  |  3 +--
 drivers/scsi/st.c                  |  2 +-
 drivers/target/target_core_pscsi.c |  3 +--
 include/linux/blkdev.h             |  2 +-
 11 files changed, 17 insertions(+), 21 deletions(-)

diff --git a/block/blk-exec.c b/block/blk-exec.c
index 85324d5..2e37e85 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -31,8 +31,7 @@ static void blk_end_sync_rq(struct request *rq, blk_status_t error)
 }
 
 /**
- * blk_execute_rq_nowait - insert a request into queue for execution
- * @q:		queue to insert the request in
+ * blk_execute_rq_nowait - insert a request to I/O scheduler for execution
  * @bd_disk:	matching gendisk
  * @rq:		request to insert
  * @at_head:    insert request at head or tail of queue
@@ -45,9 +44,8 @@ static void blk_end_sync_rq(struct request *rq, blk_status_t error)
  * Note:
  *    This function will invoke @done directly if the queue is dead.
  */
-void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
-			   struct request *rq, int at_head,
-			   rq_end_io_fn *done)
+void blk_execute_rq_nowait(struct gendisk *bd_disk, struct request *rq,
+			   int at_head, rq_end_io_fn *done)
 {
 	WARN_ON(irqs_disabled());
 	WARN_ON(!blk_rq_is_passthrough(rq));
@@ -83,7 +81,7 @@ void blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
 	unsigned long hang_check;
 
 	rq->end_io_data = &wait;
-	blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
+	blk_execute_rq_nowait(bd_disk, rq, at_head, blk_end_sync_rq);
 
 	/* Prevent hang_check timer from firing at us during very long I/O */
 	hang_check = sysctl_hung_task_timeout_secs;
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index 4478eb7..2cdf277 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -539,7 +539,7 @@ static int carm_array_info (struct carm_host *host, unsigned int array_idx)
 	spin_unlock_irq(&host->lock);
 
 	DPRINTK("blk_execute_rq_nowait, tag == %u\n", rq->tag);
-	blk_execute_rq_nowait(host->oob_q, NULL, rq, true, NULL);
+	blk_execute_rq_nowait(NULL, rq, true, NULL);
 
 	return 0;
 
@@ -578,7 +578,7 @@ static int carm_send_special (struct carm_host *host, carm_sspc_t func)
 	crq->msg_bucket = (u32) rc;
 
 	DPRINTK("blk_execute_rq_nowait, tag == %u\n", rq->tag);
-	blk_execute_rq_nowait(host->oob_q, NULL, rq, true, NULL);
+	blk_execute_rq_nowait(NULL, rq, true, NULL);
 
 	return 0;
 }
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index a39befb..0bea9ae 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -925,7 +925,7 @@ static void nvme_execute_rq_polled(struct request_queue *q,
 
 	rq->cmd_flags |= REQ_HIPRI;
 	rq->end_io_data = &wait;
-	blk_execute_rq_nowait(q, bd_disk, rq, at_head, nvme_end_sync_rq);
+	blk_execute_rq_nowait(bd_disk, rq, at_head, nvme_end_sync_rq);
 
 	while (!completion_done(&wait)) {
 		blk_poll(q, request_to_qc_t(rq->mq_hctx, rq), true);
@@ -1202,7 +1202,7 @@ static int nvme_keep_alive(struct nvme_ctrl *ctrl)
 	rq->timeout = ctrl->kato * HZ;
 	rq->end_io_data = ctrl;
 
-	blk_execute_rq_nowait(rq->q, NULL, rq, 0, nvme_keep_alive_end_io);
+	blk_execute_rq_nowait(NULL, rq, 0, nvme_keep_alive_end_io);
 
 	return 0;
 }
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 6c8eab8..0e5a550 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -695,7 +695,7 @@ static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd,
 
 	rq->end_io_data = rqd;
 
-	blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
+	blk_execute_rq_nowait(NULL, rq, 0, nvme_nvm_end_io);
 
 	return 0;
 
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 856aa31..5b78e68 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1357,7 +1357,7 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
 	}
 
 	abort_req->end_io_data = NULL;
-	blk_execute_rq_nowait(abort_req->q, NULL, abort_req, 0, abort_endio);
+	blk_execute_rq_nowait(NULL, abort_req, 0, abort_endio);
 
 	/*
 	 * The aborted req will be completed on receiving the abort req.
@@ -2281,7 +2281,7 @@ static int nvme_delete_queue(struct nvme_queue *nvmeq, u8 opcode)
 	req->end_io_data = nvmeq;
 
 	init_completion(&nvmeq->delete_done);
-	blk_execute_rq_nowait(q, NULL, req, false,
+	blk_execute_rq_nowait(NULL, req, false,
 			opcode == nvme_admin_delete_cq ?
 				nvme_del_cq_end : nvme_del_queue_end);
 	return 0;
diff --git a/drivers/nvme/target/passthru.c b/drivers/nvme/target/passthru.c
index b9776fc..cbc88ac 100644
--- a/drivers/nvme/target/passthru.c
+++ b/drivers/nvme/target/passthru.c
@@ -275,7 +275,7 @@ static void nvmet_passthru_execute_cmd(struct nvmet_req *req)
 		schedule_work(&req->p.work);
 	} else {
 		rq->end_io_data = req;
-		blk_execute_rq_nowait(rq->q, ns ? ns->disk : NULL, rq, 0,
+		blk_execute_rq_nowait(ns ? ns->disk : NULL, rq, 0,
 				      nvmet_passthru_req_done);
 	}
 
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index f11f51e..c00f06e 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -2007,7 +2007,7 @@ static void scsi_eh_lock_door(struct scsi_device *sdev)
 	req->timeout = 10 * HZ;
 	rq->retries = 5;
 
-	blk_execute_rq_nowait(req->q, NULL, req, 1, eh_lock_door_done);
+	blk_execute_rq_nowait(NULL, req, 1, eh_lock_door_done);
 }
 
 /**
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index bfa8d77..4383d93 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -829,8 +829,7 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
 
 	srp->rq->timeout = timeout;
 	kref_get(&sfp->f_ref); /* sg_rq_end_io() does kref_put(). */
-	blk_execute_rq_nowait(sdp->device->request_queue, sdp->disk,
-			      srp->rq, at_head, sg_rq_end_io);
+	blk_execute_rq_nowait(sdp->disk, srp->rq, at_head, sg_rq_end_io);
 	return 0;
 }
 
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 43f7624..841ad2f 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -585,7 +585,7 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
 	rq->retries = retries;
 	req->end_io_data = SRpnt;
 
-	blk_execute_rq_nowait(req->q, NULL, req, 1, st_scsi_execute_end);
+	blk_execute_rq_nowait(NULL, req, 1, st_scsi_execute_end);
 	return 0;
 }
 
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 7994f27..33770e5 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -1000,8 +1000,7 @@ pscsi_execute_cmd(struct se_cmd *cmd)
 		req->timeout = PS_TIMEOUT_OTHER;
 	scsi_req(req)->retries = PS_RETRY;
 
-	blk_execute_rq_nowait(pdv->pdv_sd->request_queue, NULL, req,
-			(cmd->sam_task_attr == TCM_HEAD_TAG),
+	blk_execute_rq_nowait(NULL, req, (cmd->sam_task_attr == TCM_HEAD_TAG),
 			pscsi_req_done);
 
 	return 0;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 4526b9e..623a612 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -950,7 +950,7 @@ extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
 			       gfp_t);
 extern void blk_execute_rq(struct request_queue *, struct gendisk *,
 			  struct request *, int);
-extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
+extern void blk_execute_rq_nowait(struct gendisk *,
 				  struct request *, int, rq_end_io_fn *);
 
 /* Helper to convert REQ_OP_XXX to its string format XXX */
-- 
2.7.4