LinuxLists.cc - [PATCH 0/2] remove unused argument from blk_execute_rq_nowait and blk_execute

2021-01-21 14:51:48

Subject: [PATCH 0/2] remove unused argument from blk_execute_rq_nowait and blk_execute_rq

2021-01-21 14:52:46

by Guoqing Jiang

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Subject: [PATCH 1/2] block: remove unnecessary argument from blk_execute_rq_nowait

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

Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Guoqing Jiang <[email protected]>
---
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 85324d53d072..2e37e85456fb 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 4478eb7efee0..2cdf2771f8e8 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 f320273fc672..63c469edb1bc 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 470cef3abec3..439f2b52e985 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 50d9a20568a2..6aa11067c8d0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1327,7 +1327,7 @@ 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.
@@ -2238,7 +2238,7 @@ 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 b9776fc8f08f..cbc88acdd233 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 f11f51e2465f..c00f06e9ecb0 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 bfa8d77322d7..4383d93110f8 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 43f7624508a9..841ad2fc369a 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 7994f27e4527..33770e5808ce 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 070de09425ad..bf0ddef8aa10 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -942,7 +942,7 @@ 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 */
--
2.17.1

2021-01-21 17:13:49

by Christoph Hellwig

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Subject: Re: [PATCH 1/2] block: remove unnecessary argument from blk_execute_rq_nowait

On Thu, Jan 21, 2021 at 03:29:04PM +0100, Guoqing Jiang wrote:
> 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 triviall derive it from struct request.

> -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 *);

2021-01-22 07:40:22

by Guoqing Jiang

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Subject: Re: [PATCH 1/2] block: remove unnecessary argument from blk_execute_rq_nowait

On 1/21/21 18:02, Christoph Hellwig wrote:
> On Thu, Jan 21, 2021 at 03:29:04PM +0100, Guoqing Jiang wrote:
>> 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 triviall derive it from struct request.

Thanks Christoph, will add the above to header and send new version.

Guoqing