diff mbox series

[11/28] bsg: pass in desired timeout handler

Message ID 20181025211039.11559-12-axboe@kernel.dk
State Not Applicable
Delegated to: David Miller
Headers show
Series blk-mq driver conversions and legacy path removal | expand

Commit Message

Jens Axboe Oct. 25, 2018, 9:10 p.m. UTC 
This will ease in the conversion to blk-mq, where we can't set
a timeout handler after queue init.

Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 block/bsg-lib.c                     | 3 ++-
 drivers/scsi/scsi_transport_fc.c    | 7 +++----
 drivers/scsi/scsi_transport_iscsi.c | 2 +-
 drivers/scsi/scsi_transport_sas.c   | 4 ++--
 include/linux/bsg-lib.h             | 2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

Comments

Christoph Hellwig Oct. 28, 2018, 3:53 p.m. UTC | #1 
On Thu, Oct 25, 2018 at 03:10:22PM -0600, Jens Axboe wrote:
> This will ease in the conversion to blk-mq, where we can't set
> a timeout handler after queue init.

On thing I hoped to archive with the last round of bsg cleanups is
to isolate the users of bsg from even knowing there is a struct
request underneath.  Based on that it would be nice to pass
the struct bsg_job to the actual timeout handlers instead of
struct request.
Jens Axboe Oct. 28, 2018, 11:05 p.m. UTC | #2 
On 10/28/18 9:53 AM, Christoph Hellwig wrote:
> On Thu, Oct 25, 2018 at 03:10:22PM -0600, Jens Axboe wrote:
>> This will ease in the conversion to blk-mq, where we can't set
>> a timeout handler after queue init.
> 
> On thing I hoped to archive with the last round of bsg cleanups is
> to isolate the users of bsg from even knowing there is a struct
> request underneath.  Based on that it would be nice to pass
> the struct bsg_job to the actual timeout handlers instead of
> struct request.

Makes sense, I can make that change.
Hannes Reinecke Oct. 29, 2018, 6:55 a.m. UTC | #3 
On 10/25/18 11:10 PM, Jens Axboe wrote:
> This will ease in the conversion to blk-mq, where we can't set
> a timeout handler after queue init.
> 
> Cc: Johannes Thumshirn <jthumshirn@suse.de>
> Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
> Cc: linux-scsi@vger.kernel.org
> Signed-off-by: Jens Axboe <axboe@kernel.dk>
> ---
>   block/bsg-lib.c                     | 3 ++-
>   drivers/scsi/scsi_transport_fc.c    | 7 +++----
>   drivers/scsi/scsi_transport_iscsi.c | 2 +-
>   drivers/scsi/scsi_transport_sas.c   | 4 ++--
>   include/linux/bsg-lib.h             | 2 +-
>   5 files changed, 9 insertions(+), 9 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
diff mbox series

Patch

diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index f3501cdaf1a6..1da011ec04e6 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -304,7 +304,7 @@  static void bsg_exit_rq(struct request_queue *q, struct request *req)
  * @dd_job_size: size of LLD data needed for each job
  */
 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
-		bsg_job_fn *job_fn, int dd_job_size)
+		bsg_job_fn *job_fn, rq_timed_out_fn *timeout, int dd_job_size)
 {
 	struct request_queue *q;
 	int ret;
@@ -327,6 +327,7 @@  struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
 	blk_queue_flag_set(QUEUE_FLAG_BIDI, q);
 	blk_queue_softirq_done(q, bsg_softirq_done);
 	blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT);
+	blk_queue_rq_timed_out(q, timeout);
 
 	ret = bsg_register_queue(q, dev, name, &bsg_transport_ops);
 	if (ret) {
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 381668fa135d..98aaffb4c715 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3780,7 +3780,8 @@  fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
 	snprintf(bsg_name, sizeof(bsg_name),
 		 "fc_host%d", shost->host_no);
 
-	q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, i->f->dd_bsg_size);
+	q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, fc_bsg_job_timeout,
+				i->f->dd_bsg_size);
 	if (IS_ERR(q)) {
 		dev_err(dev,
 			"fc_host%d: bsg interface failed to initialize - setup queue\n",
@@ -3788,7 +3789,6 @@  fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
 		return PTR_ERR(q);
 	}
 	__scsi_init_queue(shost, q);
-	blk_queue_rq_timed_out(q, fc_bsg_job_timeout);
 	blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT);
 	fc_host->rqst_q = q;
 	return 0;
@@ -3826,14 +3826,13 @@  fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
 		return -ENOTSUPP;
 
 	q = bsg_setup_queue(dev, dev_name(dev), fc_bsg_dispatch,
-			i->f->dd_bsg_size);
+				fc_bsg_job_timeout, i->f->dd_bsg_size);
 	if (IS_ERR(q)) {
 		dev_err(dev, "failed to setup bsg queue\n");
 		return PTR_ERR(q);
 	}
 	__scsi_init_queue(shost, q);
 	blk_queue_prep_rq(q, fc_bsg_rport_prep);
-	blk_queue_rq_timed_out(q, fc_bsg_job_timeout);
 	blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT);
 	rport->rqst_q = q;
 	return 0;
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 6fd2fe210fc3..26b11a775be9 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1542,7 +1542,7 @@  iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
 		return -ENOTSUPP;
 
 	snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no);
-	q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, 0);
+	q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, NULL, 0);
 	if (IS_ERR(q)) {
 		shost_printk(KERN_ERR, shost, "bsg interface failed to "
 			     "initialize - no request queue\n");
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 0a165b2b3e81..cf6d47891d77 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -198,7 +198,7 @@  static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
 
 	if (rphy) {
 		q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev),
-				sas_smp_dispatch, 0);
+				sas_smp_dispatch, NULL, 0);
 		if (IS_ERR(q))
 			return PTR_ERR(q);
 		rphy->q = q;
@@ -207,7 +207,7 @@  static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
 
 		snprintf(name, sizeof(name), "sas_host%d", shost->host_no);
 		q = bsg_setup_queue(&shost->shost_gendev, name,
-				sas_smp_dispatch, 0);
+				sas_smp_dispatch, NULL, 0);
 		if (IS_ERR(q))
 			return PTR_ERR(q);
 		to_sas_host_attrs(shost)->q = q;
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
index 6aeaf6472665..b13ae143e7ef 100644
--- a/include/linux/bsg-lib.h
+++ b/include/linux/bsg-lib.h
@@ -72,7 +72,7 @@  struct bsg_job {
 void bsg_job_done(struct bsg_job *job, int result,
 		  unsigned int reply_payload_rcv_len);
 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
-		bsg_job_fn *job_fn, int dd_job_size);
+		bsg_job_fn *job_fn, rq_timed_out_fn *timeout, int dd_job_size);
 void bsg_job_put(struct bsg_job *job);
 int __must_check bsg_job_get(struct bsg_job *job);