| Message ID | 20210201051619.19909-5-kashyap.desai@broadcom.com |
|---|---|
| State | New |
| Headers | show |
| Series | io_uring iopoll in scsi layer | expand |
On 2/1/21 6:16 AM, Kashyap Desai wrote: > hctx->driver_data is not set for SCSI currently. > Separately set hctx->driver_data = shost. > > Suggested-by: John Garry <john.garry@huawei.com> > Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> > Reviewed-by: John Garry <john.garry@huawei.com> > --- > drivers/scsi/scsi_lib.c | 19 +++++++++++++------ > 1 file changed, 13 insertions(+), 6 deletions(-) > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index 8c29bf0e4cfd..f661c50f3b88 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1792,9 +1792,7 @@ static void scsi_mq_exit_request(struct blk_mq_tag_set *set, struct request *rq, > > static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx) > { > - struct request_queue *q = hctx->queue; > - struct scsi_device *sdev = q->queuedata; > - struct Scsi_Host *shost = sdev->host; > + struct Scsi_Host *shost = hctx->driver_data; > > if (shost->hostt->mq_poll) > return shost->hostt->mq_poll(shost, hctx->queue_num); > @@ -1802,6 +1800,15 @@ static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx) > return 0; > } > > +static int scsi_init_hctx(struct blk_mq_hw_ctx *hctx, void *data, > + unsigned int hctx_idx) > +{ > + struct Scsi_Host *shost = data; > + > + hctx->driver_data = shost; > + return 0; > +} > + > static int scsi_map_queues(struct blk_mq_tag_set *set) > { > struct Scsi_Host *shost = container_of(set, struct Scsi_Host, tag_set); > @@ -1869,15 +1876,14 @@ static const struct blk_mq_ops scsi_mq_ops_no_commit = { > .cleanup_rq = scsi_cleanup_rq, > .busy = scsi_mq_lld_busy, > .map_queues = scsi_map_queues, > + .init_hctx = scsi_init_hctx, > .poll = scsi_mq_poll, > }; > > > static void scsi_commit_rqs(struct blk_mq_hw_ctx *hctx) > { > - struct request_queue *q = hctx->queue; > - struct scsi_device *sdev = q->queuedata; > - struct Scsi_Host *shost = sdev->host; > + struct Scsi_Host *shost = hctx->driver_data; > > shost->hostt->commit_rqs(shost, hctx->queue_num); > } > @@ -1898,6 +1904,7 @@ static const struct blk_mq_ops scsi_mq_ops = { > .cleanup_rq = scsi_cleanup_rq, > .busy = scsi_mq_lld_busy, > .map_queues = scsi_map_queues, > + .init_hctx = scsi_init_hctx, > .poll = scsi_mq_poll, > }; > > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 8c29bf0e4cfd..f661c50f3b88 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1792,9 +1792,7 @@ static void scsi_mq_exit_request(struct blk_mq_tag_set *set, struct request *rq, static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx) { - struct request_queue *q = hctx->queue; - struct scsi_device *sdev = q->queuedata; - struct Scsi_Host *shost = sdev->host; + struct Scsi_Host *shost = hctx->driver_data; if (shost->hostt->mq_poll) return shost->hostt->mq_poll(shost, hctx->queue_num); @@ -1802,6 +1800,15 @@ static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx) return 0; } +static int scsi_init_hctx(struct blk_mq_hw_ctx *hctx, void *data, + unsigned int hctx_idx) +{ + struct Scsi_Host *shost = data; + + hctx->driver_data = shost; + return 0; +} + static int scsi_map_queues(struct blk_mq_tag_set *set) { struct Scsi_Host *shost = container_of(set, struct Scsi_Host, tag_set); @@ -1869,15 +1876,14 @@ static const struct blk_mq_ops scsi_mq_ops_no_commit = { .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, + .init_hctx = scsi_init_hctx, .poll = scsi_mq_poll, }; static void scsi_commit_rqs(struct blk_mq_hw_ctx *hctx) { - struct request_queue *q = hctx->queue; - struct scsi_device *sdev = q->queuedata; - struct Scsi_Host *shost = sdev->host; + struct Scsi_Host *shost = hctx->driver_data; shost->hostt->commit_rqs(shost, hctx->queue_num); } @@ -1898,6 +1904,7 @@ static const struct blk_mq_ops scsi_mq_ops = { .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, + .init_hctx = scsi_init_hctx, .poll = scsi_mq_poll, };