From 68ec3b819a5d600a4ede8b596761dccac9f39ebc Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 21 Oct 2021 08:06:05 +0200 Subject: scsi: add a scsi_alloc_request helper Add a new helper that calls blk_get_request and initializes the scsi_request to avoid the indirect call through ->.initialize_rq_fn. Note that this makes the pktcdvd driver depend on the SCSI core, but given that only SCSI devices support SCSI passthrough requests that is not a functional change. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Link: https://lore.kernel.org/r/20211021060607.264371-6-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/Kconfig | 2 +- drivers/block/pktcdvd.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index ab3e37aa1830..9151e8ffba1c 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -304,8 +304,8 @@ config BLK_DEV_RAM_SIZE config CDROM_PKTCDVD tristate "Packet writing on CD/DVD media (DEPRECATED)" depends on !UML + depends on SCSI select CDROM - select SCSI_COMMON help Note: This driver is deprecated and will be removed from the kernel in the near future! diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index cb52cce6fb03..ea2262ec76d2 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -703,7 +703,7 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command * struct request *rq; int ret = 0; - rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ? + rq = scsi_alloc_request(q, (cgc->data_direction == CGC_DATA_WRITE) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0); if (IS_ERR(rq)) return PTR_ERR(rq); -- cgit From 4845012eb5b4e56cadb5f484cb55dd4fd9d1df80 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 21 Oct 2021 08:06:07 +0200 Subject: block: remove QUEUE_FLAG_SCSI_PASSTHROUGH Export scsi_device_from_queue for use with pktcdvd and use that instead of the otherwise unused QUEUE_FLAG_SCSI_PASSTHROUGH queue flag. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Link: https://lore.kernel.org/r/20211021060607.264371-8-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/pktcdvd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/block') diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index ea2262ec76d2..cacf64eedad8 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2536,6 +2536,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) int i; char b[BDEVNAME_SIZE]; struct block_device *bdev; + struct scsi_device *sdev; if (pd->pkt_dev == dev) { pkt_err(pd, "recursive setup not allowed\n"); @@ -2559,10 +2560,12 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) bdev = blkdev_get_by_dev(dev, FMODE_READ | FMODE_NDELAY, NULL); if (IS_ERR(bdev)) return PTR_ERR(bdev); - if (!blk_queue_scsi_passthrough(bdev_get_queue(bdev))) { + sdev = scsi_device_from_queue(bdev->bd_disk->queue); + if (!sdev) { blkdev_put(bdev, FMODE_READ | FMODE_NDELAY); return -EINVAL; } + put_device(&sdev->sdev_gendev); /* This is safe, since we have a reference from open(). */ __module_get(THIS_MODULE); -- cgit From 0bf6d96cb8294094ce1e44cbe8cf65b0899d0a3a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 25 Oct 2021 09:05:07 +0200 Subject: block: remove blk_{get,put}_request These are now pointless wrappers around blk_mq_{alloc,free}_request, so remove them. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20211025070517.1548584-3-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/paride/pd.c | 4 ++-- drivers/block/pktcdvd.c | 2 +- drivers/block/virtio_blk.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c index 675327df6aff..9cd0bd509b88 100644 --- a/drivers/block/paride/pd.c +++ b/drivers/block/paride/pd.c @@ -775,14 +775,14 @@ static int pd_special_command(struct pd_unit *disk, struct request *rq; struct pd_req *req; - rq = blk_get_request(disk->gd->queue, REQ_OP_DRV_IN, 0); + rq = blk_mq_alloc_request(disk->gd->queue, REQ_OP_DRV_IN, 0); if (IS_ERR(rq)) return PTR_ERR(rq); req = blk_mq_rq_to_pdu(rq); req->func = func; blk_execute_rq(disk->gd, rq, 0); - blk_put_request(rq); + blk_mq_free_request(rq); return 0; } diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index cacf64eedad8..40e7a45e3347 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -726,7 +726,7 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command * if (scsi_req(rq)->result) ret = -EIO; out: - blk_put_request(rq); + blk_mq_free_request(rq); return ret; } diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 303caf2d17d0..f81a768943e1 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -312,7 +312,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) struct request *req; int err; - req = blk_get_request(q, REQ_OP_DRV_IN, 0); + req = blk_mq_alloc_request(q, REQ_OP_DRV_IN, 0); if (IS_ERR(req)) return PTR_ERR(req); @@ -323,7 +323,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) blk_execute_rq(vblk->disk, req, false); err = blk_status_to_errno(virtblk_result(blk_mq_rq_to_pdu(req))); out: - blk_put_request(req); + blk_mq_free_request(req); return err; } -- cgit