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for-5.16/passthrough-flag-2021-10-29 

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Merge tag 'for-5.16/passthrough-flag-2021-10-29' of git://git.kernel.dk/linux-block

Pull QUEUE_FLAG_SCSI_PASSTHROUGH removal from Jens Axboe:
 "This contains a series leading to the removal of the
  QUEUE_FLAG_SCSI_PASSTHROUGH queue flag"

* tag 'for-5.16/passthrough-flag-2021-10-29' of git://git.kernel.dk/linux-block:
  block: remove blk_{get,put}_request
  block: remove QUEUE_FLAG_SCSI_PASSTHROUGH
  block: remove the initialize_rq_fn blk_mq_ops method
  scsi: add a scsi_alloc_request helper
  bsg-lib: initialize the bsg_job in bsg_transport_sg_io_fn
  nfsd/blocklayout: use ->get_unique_id instead of sending SCSI commands
  sd: implement ->get_unique_id
  block: add a ->get_unique_id method
This commit is contained in:
Linus Torvalds 2021-11-01 10:12:44 -07:00
parent 737f1cd8a8 0bf6d96cb8
commit 71ae42629e
27 changed files with 189 additions and 242 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
block/blk-core.c
View File

@ -597,34 +597,6 @@ bool blk_get_queue(struct request_queue *q)
}
EXPORT_SYMBOL(blk_get_queue);
/**
* blk_get_request - allocate a request
* @q: request queue to allocate a request for
* @op: operation (REQ_OP_*) and REQ_* flags, e.g. REQ_SYNC.
* @flags: BLK_MQ_REQ_* flags, e.g. BLK_MQ_REQ_NOWAIT.
*/
struct request *blk_get_request(struct request_queue *q, unsigned int op,
blk_mq_req_flags_t flags)
{
struct request *req;
WARN_ON_ONCE(op & REQ_NOWAIT);
WARN_ON_ONCE(flags & ~(BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_PM));
req = blk_mq_alloc_request(q, op, flags);
if (!IS_ERR(req) && q->mq_ops->initialize_rq_fn)
q->mq_ops->initialize_rq_fn(req);
return req;
}
EXPORT_SYMBOL(blk_get_request);
void blk_put_request(struct request *req)
{
blk_mq_free_request(req);
}
EXPORT_SYMBOL(blk_put_request);
static void handle_bad_sector(struct bio *bio, sector_t maxsector)
{
char b[BDEVNAME_SIZE];

1
block/blk-mq-debugfs.c
View File

@ -124,7 +124,6 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(STATS),
QUEUE_FLAG_NAME(POLL_STATS),
QUEUE_FLAG_NAME(REGISTERED),
QUEUE_FLAG_NAME(SCSI_PASSTHROUGH),
QUEUE_FLAG_NAME(QUIESCED),
QUEUE_FLAG_NAME(PCI_P2PDMA),
QUEUE_FLAG_NAME(ZONE_RESETALL),

32
block/bsg-lib.c
View File

@ -31,6 +31,7 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
struct bsg_job *job;
struct request *rq;
struct bio *bio;
void *reply;
int ret;
if (hdr->protocol != BSG_PROTOCOL_SCSI ||
@ -39,22 +40,28 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
rq = blk_get_request(q, hdr->dout_xfer_len ?
rq = blk_mq_alloc_request(q, hdr->dout_xfer_len ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return PTR_ERR(rq);
rq->timeout = timeout;
job = blk_mq_rq_to_pdu(rq);
reply = job->reply;
memset(job, 0, sizeof(*job));
job->reply = reply;
job->reply_len = SCSI_SENSE_BUFFERSIZE;
job->dd_data = job + 1;
job->request_len = hdr->request_len;
job->request = memdup_user(uptr64(hdr->request), hdr->request_len);
if (IS_ERR(job->request)) {
ret = PTR_ERR(job->request);
goto out_put_request;
goto out_free_rq;
}
if (hdr->dout_xfer_len && hdr->din_xfer_len) {
job->bidi_rq = blk_get_request(rq->q, REQ_OP_DRV_IN, 0);
job->bidi_rq = blk_mq_alloc_request(rq->q, REQ_OP_DRV_IN, 0);
if (IS_ERR(job->bidi_rq)) {
ret = PTR_ERR(job->bidi_rq);
goto out_free_job_request;
@ -134,11 +141,11 @@ out_unmap_bidi_rq:
blk_rq_unmap_user(job->bidi_bio);
out_free_bidi_rq:
if (job->bidi_rq)
blk_put_request(job->bidi_rq);
blk_mq_free_request(job->bidi_rq);
out_free_job_request:
kfree(job->request);
out_put_request:
blk_put_request(rq);
out_free_rq:
blk_mq_free_request(rq);
return ret;
}
@ -302,18 +309,6 @@ static int bsg_init_rq(struct blk_mq_tag_set *set, struct request *req,
return 0;
}
/* called right before the request is given to the request_queue user */
static void bsg_initialize_rq(struct request *req)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
void *reply = job->reply;
memset(job, 0, sizeof(*job));
job->reply = reply;
job->reply_len = SCSI_SENSE_BUFFERSIZE;
job->dd_data = job + 1;
}
static void bsg_exit_rq(struct blk_mq_tag_set *set, struct request *req,
unsigned int hctx_idx)
{
@ -350,7 +345,6 @@ static const struct blk_mq_ops bsg_mq_ops = {
.queue_rq = bsg_queue_rq,
.init_request = bsg_init_rq,
.exit_request = bsg_exit_rq,
.initialize_rq_fn = bsg_initialize_rq,
.complete = bsg_complete,
.timeout = bsg_timeout,
};

2
drivers/block/Kconfig
View File

@ -281,8 +281,8 @@ 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!

4
drivers/block/paride/pd.c
View File

@ -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;
}

9
drivers/block/pktcdvd.c
View File

@ -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);
@ -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;
}
@ -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);

4
drivers/block/virtio_blk.c
View File

@ -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;
}

4
drivers/md/dm-mpath.c
View File

@ -530,7 +530,7 @@ static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
bdev = pgpath->path.dev->bdev;
q = bdev_get_queue(bdev);
clone = blk_get_request(q, rq->cmd_flags | REQ_NOMERGE,
clone = blk_mq_alloc_request(q, rq->cmd_flags | REQ_NOMERGE,
BLK_MQ_REQ_NOWAIT);
if (IS_ERR(clone)) {
/* EBUSY, ENODEV or EWOULDBLOCK: requeue */
@ -579,7 +579,7 @@ static void multipath_release_clone(struct request *clone,
clone->io_start_time_ns);
}
blk_put_request(clone);
blk_mq_free_request(clone);
}
/*

20
drivers/mmc/core/block.c
View File

@ -258,7 +258,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
mq = &md->queue;
/* Dispatch locking to the block layer */
req = blk_get_request(mq->queue, REQ_OP_DRV_OUT, 0);
req = blk_mq_alloc_request(mq->queue, REQ_OP_DRV_OUT, 0);
if (IS_ERR(req)) {
count = PTR_ERR(req);
goto out_put;
@ -266,7 +266,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_BOOT_WP;
blk_execute_rq(NULL, req, 0);
ret = req_to_mmc_queue_req(req)->drv_op_result;
blk_put_request(req);
blk_mq_free_request(req);
if (!ret) {
pr_info("%s: Locking boot partition ro until next power on\n",
@ -646,7 +646,7 @@ static int mmc_blk_ioctl_cmd(struct mmc_blk_data *md,
* Dispatch the ioctl() into the block request queue.
*/
mq = &md->queue;
req = blk_get_request(mq->queue,
req = blk_mq_alloc_request(mq->queue,
idata->ic.write_flag ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@ -660,7 +660,7 @@ static int mmc_blk_ioctl_cmd(struct mmc_blk_data *md,
blk_execute_rq(NULL, req, 0);
ioc_err = req_to_mmc_queue_req(req)->drv_op_result;
err = mmc_blk_ioctl_copy_to_user(ic_ptr, idata);
blk_put_request(req);
blk_mq_free_request(req);
cmd_done:
kfree(idata->buf);
@ -716,7 +716,7 @@ static int mmc_blk_ioctl_multi_cmd(struct mmc_blk_data *md,
* Dispatch the ioctl()s into the block request queue.
*/
mq = &md->queue;
req = blk_get_request(mq->queue,
req = blk_mq_alloc_request(mq->queue,
idata[0]->ic.write_flag ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@ -733,7 +733,7 @@ static int mmc_blk_ioctl_multi_cmd(struct mmc_blk_data *md,
for (i = 0; i < num_of_cmds && !err; i++)
err = mmc_blk_ioctl_copy_to_user(&cmds[i], idata[i]);
blk_put_request(req);
blk_mq_free_request(req);
cmd_err:
for (i = 0; i < num_of_cmds; i++) {
@ -2730,7 +2730,7 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
int ret;
/* Ask the block layer about the card status */
req = blk_get_request(mq->queue, REQ_OP_DRV_IN, 0);
req = blk_mq_alloc_request(mq->queue, REQ_OP_DRV_IN, 0);
if (IS_ERR(req))
return PTR_ERR(req);
req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_GET_CARD_STATUS;
@ -2740,7 +2740,7 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
*val = ret;
ret = 0;
}
blk_put_request(req);
blk_mq_free_request(req);
return ret;
}
@ -2766,7 +2766,7 @@ static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
return -ENOMEM;
/* Ask the block layer for the EXT CSD */
req = blk_get_request(mq->queue, REQ_OP_DRV_IN, 0);
req = blk_mq_alloc_request(mq->queue, REQ_OP_DRV_IN, 0);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto out_free;
@ -2775,7 +2775,7 @@ static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
req_to_mmc_queue_req(req)->drv_op_data = &ext_csd;
blk_execute_rq(NULL, req, 0);
err = req_to_mmc_queue_req(req)->drv_op_result;
blk_put_request(req);
blk_mq_free_request(req);
if (err) {
pr_err("FAILED %d\n", err);
goto out_free;

6
drivers/scsi/scsi_bsg.c
View File

@ -25,8 +25,8 @@ static int scsi_bsg_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
return -EOPNOTSUPP;
}
rq = blk_get_request(q, hdr->dout_xfer_len ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
rq = scsi_alloc_request(q, hdr->dout_xfer_len ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return PTR_ERR(rq);
rq->timeout = timeout;
@ -95,7 +95,7 @@ static int scsi_bsg_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
out_free_cmd:
scsi_req_free_cmd(scsi_req(rq));
out_put_request:
blk_put_request(rq);
blk_mq_free_request(rq);
return ret;
}

4
drivers/scsi/scsi_error.c
View File

@ -1979,7 +1979,7 @@ maybe_retry:
static void eh_lock_door_done(struct request *req, blk_status_t status)
{
blk_put_request(req);
blk_mq_free_request(req);
}
/**
@ -1998,7 +1998,7 @@ static void scsi_eh_lock_door(struct scsi_device *sdev)
struct request *req;
struct scsi_request *rq;
req = blk_get_request(sdev->request_queue, REQ_OP_DRV_IN, 0);
req = scsi_alloc_request(sdev->request_queue, REQ_OP_DRV_IN, 0);
if (IS_ERR(req))
return;
rq = scsi_req(req);

8
drivers/scsi/scsi_ioctl.c
View File

@ -438,7 +438,7 @@ static int sg_io(struct scsi_device *sdev, struct gendisk *disk,
at_head = 1;
ret = -ENOMEM;
rq = blk_get_request(sdev->request_queue, writing ?
rq = scsi_alloc_request(sdev->request_queue, writing ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return PTR_ERR(rq);
@ -490,7 +490,7 @@ static int sg_io(struct scsi_device *sdev, struct gendisk *disk,
out_free_cdb:
scsi_req_free_cmd(req);
out_put_request:
blk_put_request(rq);
blk_mq_free_request(rq);
return ret;
}
@ -561,7 +561,7 @@ static int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk,
}
rq = blk_get_request(q, in_len ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
rq = scsi_alloc_request(q, in_len ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto error_free_buffer;
@ -634,7 +634,7 @@ static int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk,
}
error:
blk_put_request(rq);
blk_mq_free_request(rq);
error_free_buffer:
kfree(buffer);

29
drivers/scsi/scsi_lib.c
View File

@ -216,7 +216,7 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
struct scsi_request *rq;
int ret;
req = blk_get_request(sdev->request_queue,
req = scsi_alloc_request(sdev->request_queue,
data_direction == DMA_TO_DEVICE ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN,
rq_flags & RQF_PM ? BLK_MQ_REQ_PM : 0);
@ -260,7 +260,7 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
scsi_normalize_sense(rq->sense, rq->sense_len, sshdr);
ret = rq->result;
out:
blk_put_request(req);
blk_mq_free_request(req);
return ret;
}
@ -1079,9 +1079,6 @@ EXPORT_SYMBOL(scsi_alloc_sgtables);
* This function initializes the members of struct scsi_cmnd that must be
* initialized before request processing starts and that won't be
* reinitialized if a SCSI command is requeued.
*
* Called from inside blk_get_request() for pass-through requests and from
* inside scsi_init_command() for filesystem requests.
*/
static void scsi_initialize_rq(struct request *rq)
{
@ -1098,6 +1095,18 @@ static void scsi_initialize_rq(struct request *rq)
cmd->retries = 0;
}
struct request *scsi_alloc_request(struct request_queue *q,
unsigned int op, blk_mq_req_flags_t flags)
{
struct request *rq;
rq = blk_mq_alloc_request(q, op, flags);
if (!IS_ERR(rq))
scsi_initialize_rq(rq);
return rq;
}
EXPORT_SYMBOL_GPL(scsi_alloc_request);
/*
* Only called when the request isn't completed by SCSI, and not freed by
* SCSI
@ -1864,7 +1873,6 @@ static const struct blk_mq_ops scsi_mq_ops_no_commit = {
#endif
.init_request = scsi_mq_init_request,
.exit_request = scsi_mq_exit_request,
.initialize_rq_fn = scsi_initialize_rq,
.cleanup_rq = scsi_cleanup_rq,
.busy = scsi_mq_lld_busy,
.map_queues = scsi_map_queues,
@ -1894,7 +1902,6 @@ static const struct blk_mq_ops scsi_mq_ops = {
#endif
.init_request = scsi_mq_init_request,
.exit_request = scsi_mq_exit_request,
.initialize_rq_fn = scsi_initialize_rq,
.cleanup_rq = scsi_cleanup_rq,
.busy = scsi_mq_lld_busy,
.map_queues = scsi_map_queues,
@ -1960,6 +1967,14 @@ struct scsi_device *scsi_device_from_queue(struct request_queue *q)
return sdev;
}
/*
* pktcdvd should have been integrated into the SCSI layers, but for historical
* reasons like the old IDE driver it isn't. This export allows it to safely
* probe if a given device is a SCSI one and only attach to that.
*/
#ifdef CONFIG_CDROM_PKTCDVD_MODULE
EXPORT_SYMBOL_GPL(scsi_device_from_queue);
#endif
/**
* scsi_block_requests - Utility function used by low-level drivers to prevent

1
drivers/scsi/scsi_scan.c
View File

@ -280,7 +280,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
sdev->request_queue = q;
q->queuedata = sdev;
__scsi_init_queue(sdev->host, q);
blk_queue_flag_set(QUEUE_FLAG_SCSI_PASSTHROUGH, q);
WARN_ON_ONCE(!blk_get_queue(q));
depth = sdev->host->cmd_per_lun ?: 1;

39
drivers/scsi/sd.c
View File

@ -1757,6 +1757,44 @@ static void sd_rescan(struct device *dev)
sd_revalidate_disk(sdkp->disk);
}
static int sd_get_unique_id(struct gendisk *disk, u8 id[16],
enum blk_unique_id type)
{
struct scsi_device *sdev = scsi_disk(disk)->device;
const struct scsi_vpd *vpd;
const unsigned char *d;
int ret = -ENXIO, len;
rcu_read_lock();
vpd = rcu_dereference(sdev->vpd_pg83);
if (!vpd)
goto out_unlock;
ret = -EINVAL;
for (d = vpd->data + 4; d < vpd->data + vpd->len; d += d[3] + 4) {
/* we only care about designators with LU association */
if (((d[1] >> 4) & 0x3) != 0x00)
continue;
if ((d[1] & 0xf) != type)
continue;
/*
* Only exit early if a 16-byte descriptor was found. Otherwise
* keep looking as one with more entropy might still show up.
*/
len = d[3];
if (len != 8 && len != 12 && len != 16)
continue;
ret = len;
memcpy(id, d + 4, len);
if (len == 16)
break;
}
out_unlock:
rcu_read_unlock();
return ret;
}
static char sd_pr_type(enum pr_type type)
{
switch (type) {
@ -1861,6 +1899,7 @@ static const struct block_device_operations sd_fops = {
.check_events = sd_check_events,
.unlock_native_capacity = sd_unlock_native_capacity,
.report_zones = sd_zbc_report_zones,
.get_unique_id = sd_get_unique_id,
.pr_ops = &sd_pr_ops,
};

10
drivers/scsi/sg.c
View File

@ -815,7 +815,7 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
if (atomic_read(&sdp->detaching)) {
if (srp->bio) {
scsi_req_free_cmd(scsi_req(srp->rq));
blk_put_request(srp->rq);
blk_mq_free_request(srp->rq);
srp->rq = NULL;
}
@ -1390,7 +1390,7 @@ sg_rq_end_io(struct request *rq, blk_status_t status)
*/
srp->rq = NULL;
scsi_req_free_cmd(scsi_req(rq));
blk_put_request(rq);
blk_mq_free_request(rq);
write_lock_irqsave(&sfp->rq_list_lock, iflags);
if (unlikely(srp->orphan)) {
@ -1718,13 +1718,13 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
*
* With scsi-mq enabled, there are a fixed number of preallocated
* requests equal in number to shost->can_queue. If all of the
* preallocated requests are already in use, then blk_get_request()
* preallocated requests are already in use, then scsi_alloc_request()
* will sleep until an active command completes, freeing up a request.
* Although waiting in an asynchronous interface is less than ideal, we
* do not want to use BLK_MQ_REQ_NOWAIT here because userspace might
* not expect an EWOULDBLOCK from this condition.
*/
rq = blk_get_request(q, hp->dxfer_direction == SG_DXFER_TO_DEV ?
rq = scsi_alloc_request(q, hp->dxfer_direction == SG_DXFER_TO_DEV ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq)) {
kfree(long_cmdp);
@ -1830,7 +1830,7 @@ sg_finish_rem_req(Sg_request *srp)
if (srp->rq) {
scsi_req_free_cmd(scsi_req(srp->rq));
blk_put_request(srp->rq);
blk_mq_free_request(srp->rq);
}
if (srp->res_used)

4
drivers/scsi/sr.c
View File

@ -967,7 +967,7 @@ static int sr_read_cdda_bpc(struct cdrom_device_info *cdi, void __user *ubuf,
struct bio *bio;
int ret;
rq = blk_get_request(disk->queue, REQ_OP_DRV_IN, 0);
rq = scsi_alloc_request(disk->queue, REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return PTR_ERR(rq);
req = scsi_req(rq);
@ -1003,7 +1003,7 @@ static int sr_read_cdda_bpc(struct cdrom_device_info *cdi, void __user *ubuf,
if (blk_rq_unmap_user(bio))
ret = -EFAULT;
out_put_request:
blk_put_request(rq);
blk_mq_free_request(rq);
return ret;
}

6
drivers/scsi/st.c
View File

@ -530,7 +530,7 @@ static void st_scsi_execute_end(struct request *req, blk_status_t status)
complete(SRpnt->waiting);
blk_rq_unmap_user(tmp);
blk_put_request(req);
blk_mq_free_request(req);
}
static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
@ -543,7 +543,7 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
int err = 0;
struct scsi_tape *STp = SRpnt->stp;
req = blk_get_request(SRpnt->stp->device->request_queue,
req = scsi_alloc_request(SRpnt->stp->device->request_queue,
data_direction == DMA_TO_DEVICE ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(req))
@ -557,7 +557,7 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
err = blk_rq_map_user(req->q, req, mdata, NULL, bufflen,
GFP_KERNEL);
if (err) {
blk_put_request(req);
blk_mq_free_request(req);
return err;
}
}

20
drivers/scsi/ufs/ufshcd.c
View File

@ -2920,7 +2920,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
* Even though we use wait_event() which sleeps indefinitely,
* the maximum wait time is bounded by SCSI request timeout.
*/
req = blk_get_request(q, REQ_OP_DRV_OUT, 0);
req = blk_mq_alloc_request(q, REQ_OP_DRV_OUT, 0);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto out_unlock;
@ -2947,7 +2947,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
(struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
out:
blk_put_request(req);
blk_mq_free_request(req);
out_unlock:
up_read(&hba->clk_scaling_lock);
return err;
@ -6512,9 +6512,9 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
int task_tag, err;
/*
* blk_get_request() is used here only to get a free tag.
* blk_mq_alloc_request() is used here only to get a free tag.
*/
req = blk_get_request(q, REQ_OP_DRV_OUT, 0);
req = blk_mq_alloc_request(q, REQ_OP_DRV_OUT, 0);
if (IS_ERR(req))
return PTR_ERR(req);
@ -6570,7 +6570,7 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
spin_unlock_irqrestore(hba->host->host_lock, flags);
ufshcd_release(hba);
blk_put_request(req);
blk_mq_free_request(req);
return err;
}
@ -6655,7 +6655,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
down_read(&hba->clk_scaling_lock);
req = blk_get_request(q, REQ_OP_DRV_OUT, 0);
req = blk_mq_alloc_request(q, REQ_OP_DRV_OUT, 0);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto out_unlock;
@ -6736,7 +6736,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
(struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
out:
blk_put_request(req);
blk_mq_free_request(req);
out_unlock:
up_read(&hba->clk_scaling_lock);
return err;
@ -7907,7 +7907,7 @@ static void ufshcd_request_sense_done(struct request *rq, blk_status_t error)
if (error != BLK_STS_OK)
pr_err("%s: REQUEST SENSE failed (%d)\n", __func__, error);
kfree(rq->end_io_data);
blk_put_request(rq);
blk_mq_free_request(rq);
}
static int
@ -7927,7 +7927,7 @@ ufshcd_request_sense_async(struct ufs_hba *hba, struct scsi_device *sdev)
if (!buffer)
return -ENOMEM;
req = blk_get_request(sdev->request_queue, REQ_OP_DRV_IN,
req = blk_mq_alloc_request(sdev->request_queue, REQ_OP_DRV_IN,
/*flags=*/BLK_MQ_REQ_PM);
if (IS_ERR(req)) {
ret = PTR_ERR(req);
@ -7952,7 +7952,7 @@ ufshcd_request_sense_async(struct ufs_hba *hba, struct scsi_device *sdev)
return 0;
out_put:
blk_put_request(req);
blk_mq_free_request(req);
out_free:
kfree(buffer);
return ret;

4
drivers/scsi/ufs/ufshpb.c
View File

@ -449,7 +449,7 @@ static struct ufshpb_req *ufshpb_get_req(struct ufshpb_lu *hpb,
return NULL;
retry:
req = blk_get_request(hpb->sdev_ufs_lu->request_queue, dir,
req = blk_mq_alloc_request(hpb->sdev_ufs_lu->request_queue, dir,
BLK_MQ_REQ_NOWAIT);
if (!atomic && (PTR_ERR(req) == -EWOULDBLOCK) && (--retries > 0)) {
@ -473,7 +473,7 @@ free_rq:
static void ufshpb_put_req(struct ufshpb_lu *hpb, struct ufshpb_req *rq)
{
blk_put_request(rq->req);
blk_mq_free_request(rq->req);
kmem_cache_free(hpb->map_req_cache, rq);
}

7
drivers/target/target_core_pscsi.c
View File

@ -980,11 +980,10 @@ pscsi_execute_cmd(struct se_cmd *cmd)
memcpy(pt->pscsi_cdb, cmd->t_task_cdb,
scsi_command_size(cmd->t_task_cdb));
req = blk_get_request(pdv->pdv_sd->request_queue,
req = scsi_alloc_request(pdv->pdv_sd->request_queue,
cmd->data_direction == DMA_TO_DEVICE ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(req)) {
pr_err("PSCSI: blk_get_request() failed\n");
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
goto fail;
}
@ -1012,7 +1011,7 @@ pscsi_execute_cmd(struct se_cmd *cmd)
return 0;
fail_put_request:
blk_put_request(req);
blk_mq_free_request(req);
fail:
kfree(pt);
return ret;
@ -1067,7 +1066,7 @@ static void pscsi_req_done(struct request *req, blk_status_t status)
break;
}
blk_put_request(req);
blk_mq_free_request(req);
kfree(pt);
}

1
fs/nfsd/Kconfig
View File

@ -109,7 +109,6 @@ config NFSD_SCSILAYOUT
depends on NFSD_V4 && BLOCK
select NFSD_PNFS
select EXPORTFS_BLOCK_OPS
select SCSI_COMMON
help
This option enables support for the exporting pNFS SCSI layouts
in the kernel's NFS server. The pNFS SCSI layout enables NFS

158
fs/nfsd/blocklayout.c
View File

@ -9,9 +9,6 @@
#include <linux/pr.h>
#include <linux/nfsd/debug.h>
#include <scsi/scsi_proto.h>
#include <scsi/scsi_common.h>
#include <scsi/scsi_request.h>
#include "blocklayoutxdr.h"
#include "pnfs.h"
@ -211,109 +208,6 @@ const struct nfsd4_layout_ops bl_layout_ops = {
#endif /* CONFIG_NFSD_BLOCKLAYOUT */
#ifdef CONFIG_NFSD_SCSILAYOUT
static int nfsd4_scsi_identify_device(struct block_device *bdev,
struct pnfs_block_volume *b)
{
struct request_queue *q = bdev->bd_disk->queue;
struct request *rq;
struct scsi_request *req;
/*
* The allocation length (passed in bytes 3 and 4 of the INQUIRY
* command descriptor block) specifies the number of bytes that have
* been allocated for the data-in buffer.
* 252 is the highest one-byte value that is a multiple of 4.
* 65532 is the highest two-byte value that is a multiple of 4.
*/
size_t bufflen = 252, maxlen = 65532, len, id_len;
u8 *buf, *d, type, assoc;
int retries = 1, error;
if (WARN_ON_ONCE(!blk_queue_scsi_passthrough(q)))
return -EINVAL;
again:
buf = kzalloc(bufflen, GFP_KERNEL);
if (!buf)
return -ENOMEM;
rq = blk_get_request(q, REQ_OP_DRV_IN, 0);
if (IS_ERR(rq)) {
error = -ENOMEM;
goto out_free_buf;
}
req = scsi_req(rq);
error = blk_rq_map_kern(q, rq, buf, bufflen, GFP_KERNEL);
if (error)
goto out_put_request;
req->cmd[0] = INQUIRY;
req->cmd[1] = 1;
req->cmd[2] = 0x83;
req->cmd[3] = bufflen >> 8;
req->cmd[4] = bufflen & 0xff;
req->cmd_len = COMMAND_SIZE(INQUIRY);
blk_execute_rq(NULL, rq, 1);
if (req->result) {
pr_err("pNFS: INQUIRY 0x83 failed with: %x\n",
req->result);
error = -EIO;
goto out_put_request;
}
len = (buf[2] << 8) + buf[3] + 4;
if (len > bufflen) {
if (len <= maxlen && retries--) {
blk_put_request(rq);
kfree(buf);
bufflen = len;
goto again;
}
pr_err("pNFS: INQUIRY 0x83 response invalid (len = %zd)\n",
len);
goto out_put_request;
}
d = buf + 4;
for (d = buf + 4; d < buf + len; d += id_len + 4) {
id_len = d[3];
type = d[1] & 0xf;
assoc = (d[1] >> 4) & 0x3;
/*
* We only care about a EUI-64 and NAA designator types
* with LU association.
*/
if (assoc != 0x00)
continue;
if (type != 0x02 && type != 0x03)
continue;
if (id_len != 8 && id_len != 12 && id_len != 16)
continue;
b->scsi.code_set = PS_CODE_SET_BINARY;
b->scsi.designator_type = type == 0x02 ?
PS_DESIGNATOR_EUI64 : PS_DESIGNATOR_NAA;
b->scsi.designator_len = id_len;
memcpy(b->scsi.designator, d + 4, id_len);
/*
* If we found a 8 or 12 byte descriptor continue on to
* see if a 16 byte one is available. If we find a
* 16 byte descriptor we're done.
*/
if (id_len == 16)
break;
}
out_put_request:
blk_put_request(rq);
out_free_buf:
kfree(buf);
return error;
}
#define NFSD_MDS_PR_KEY 0x0100000000000000ULL
/*
@ -325,6 +219,31 @@ static u64 nfsd4_scsi_pr_key(struct nfs4_client *clp)
return ((u64)clp->cl_clientid.cl_boot << 32) | clp->cl_clientid.cl_id;
}
static const u8 designator_types[] = {
PS_DESIGNATOR_EUI64,
PS_DESIGNATOR_NAA,
};
static int
nfsd4_block_get_unique_id(struct gendisk *disk, struct pnfs_block_volume *b)
{
int ret, i;
for (i = 0; i < ARRAY_SIZE(designator_types); i++) {
u8 type = designator_types[i];
ret = disk->fops->get_unique_id(disk, b->scsi.designator, type);
if (ret > 0) {
b->scsi.code_set = PS_CODE_SET_BINARY;
b->scsi.designator_type = type;
b->scsi.designator_len = ret;
return 0;
}
}
return -EINVAL;
}
static int
nfsd4_block_get_device_info_scsi(struct super_block *sb,
struct nfs4_client *clp,
@ -333,7 +252,7 @@ nfsd4_block_get_device_info_scsi(struct super_block *sb,
struct pnfs_block_deviceaddr *dev;
struct pnfs_block_volume *b;
const struct pr_ops *ops;
int error;
int ret;
dev = kzalloc(sizeof(struct pnfs_block_deviceaddr) +
sizeof(struct pnfs_block_volume), GFP_KERNEL);
@ -347,33 +266,38 @@ nfsd4_block_get_device_info_scsi(struct super_block *sb,
b->type = PNFS_BLOCK_VOLUME_SCSI;
b->scsi.pr_key = nfsd4_scsi_pr_key(clp);
error = nfsd4_scsi_identify_device(sb->s_bdev, b);
if (error)
return error;
ret = nfsd4_block_get_unique_id(sb->s_bdev->bd_disk, b);
if (ret < 0)
goto out_free_dev;
ret = -EINVAL;
ops = sb->s_bdev->bd_disk->fops->pr_ops;
if (!ops) {
pr_err("pNFS: device %s does not support PRs.\n",
sb->s_id);
return -EINVAL;
goto out_free_dev;
}
error = ops->pr_register(sb->s_bdev, 0, NFSD_MDS_PR_KEY, true);
if (error) {
ret = ops->pr_register(sb->s_bdev, 0, NFSD_MDS_PR_KEY, true);
if (ret) {
pr_err("pNFS: failed to register key for device %s.\n",
sb->s_id);
return -EINVAL;
goto out_free_dev;
}
error = ops->pr_reserve(sb->s_bdev, NFSD_MDS_PR_KEY,
ret = ops->pr_reserve(sb->s_bdev, NFSD_MDS_PR_KEY,
PR_EXCLUSIVE_ACCESS_REG_ONLY, 0);
if (error) {
if (ret) {
pr_err("pNFS: failed to reserve device %s.\n",
sb->s_id);
return -EINVAL;
goto out_free_dev;
}
return 0;
out_free_dev:
kfree(dev);
return ret;
}
static __be32

5
fs/nfsd/nfs4layouts.c
View File

@ -145,8 +145,9 @@ void nfsd4_setup_layout_type(struct svc_export *exp)
#ifdef CONFIG_NFSD_SCSILAYOUT
if (sb->s_export_op->map_blocks &&
sb->s_export_op->commit_blocks &&
sb->s_bdev && sb->s_bdev->bd_disk->fops->pr_ops &&
blk_queue_scsi_passthrough(sb->s_bdev->bd_disk->queue))
sb->s_bdev &&
sb->s_bdev->bd_disk->fops->pr_ops &&
sb->s_bdev->bd_disk->fops->get_unique_id)
exp->ex_layout_types |= 1 << LAYOUT_SCSI;
#endif
}

8
include/linux/blk-mq.h
View File

@ -566,11 +566,6 @@ struct blk_mq_ops {
void (*exit_request)(struct blk_mq_tag_set *set, struct request *,
unsigned int);
/**
* @initialize_rq_fn: Called from inside blk_get_request().
*/
void (*initialize_rq_fn)(struct request *rq);
/**
* @cleanup_rq: Called before freeing one request which isn't completed
* yet, and usually for freeing the driver private data.
@ -897,9 +892,6 @@ static inline bool rq_is_sync(struct request *rq)
}
void blk_rq_init(struct request_queue *q, struct request *rq);
void blk_put_request(struct request *rq);
struct request *blk_get_request(struct request_queue *q, unsigned int op,
blk_mq_req_flags_t flags);
int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
struct bio_set *bs, gfp_t gfp_mask,
int (*bio_ctr)(struct bio *, struct bio *, void *), void *data);

14
include/linux/blkdev.h
View File

@ -399,7 +399,6 @@ struct request_queue {
#define QUEUE_FLAG_STATS 20 /* track IO start and completion times */
#define QUEUE_FLAG_POLL_STATS 21 /* collecting stats for hybrid polling */
#define QUEUE_FLAG_REGISTERED 22 /* queue has been registered to a disk */
#define QUEUE_FLAG_SCSI_PASSTHROUGH 23 /* queue supports SCSI commands */
#define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */
#define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */
#define QUEUE_FLAG_ZONE_RESETALL 26 /* supports Zone Reset All */
@ -433,8 +432,6 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_secure_erase(q) \
(test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
#define blk_queue_scsi_passthrough(q) \
test_bit(QUEUE_FLAG_SCSI_PASSTHROUGH, &(q)->queue_flags)
#define blk_queue_pci_p2pdma(q) \
test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags)
#ifdef CONFIG_BLK_RQ_ALLOC_TIME
@ -1188,6 +1185,14 @@ static inline void blk_crypto_unregister(struct request_queue *q) { }
#endif /* CONFIG_BLK_INLINE_ENCRYPTION */
enum blk_unique_id {
/* these match the Designator Types specified in SPC */
BLK_UID_T10 = 1,
BLK_UID_EUI64 = 2,
BLK_UID_NAA = 3,
};
#define NFL4_UFLG_MASK 0x0000003F
struct block_device_operations {
void (*submit_bio)(struct bio *bio);
@ -1206,6 +1211,9 @@ struct block_device_operations {
int (*report_zones)(struct gendisk *, sector_t sector,
unsigned int nr_zones, report_zones_cb cb, void *data);
char *(*devnode)(struct gendisk *disk, umode_t *mode);
/* returns the length of the identifier or a negative errno: */
int (*get_unique_id)(struct gendisk *disk, u8 id[16],
enum blk_unique_id id_type);
struct module *owner;
const struct pr_ops *pr_ops;

3
include/scsi/scsi_cmnd.h
View File

@ -396,4 +396,7 @@ static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd)
extern void scsi_build_sense(struct scsi_cmnd *scmd, int desc,
u8 key, u8 asc, u8 ascq);
struct request *scsi_alloc_request(struct request_queue *q,
unsigned int op, blk_mq_req_flags_t flags);
#endif /* _SCSI_SCSI_CMND_H */