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Merge branch 'for-4.11/next' into for-4.11/linus-merge

Browse source 
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2017-02-17 14:08:19 -07:00
commit 818551e2b2
171 changed files with 2494 additions and 2850 deletions
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13
drivers/block/Kconfig
View file

@ -69,6 +69,7 @@ config AMIGA_Z2RAM
config GDROM
tristate "SEGA Dreamcast GD-ROM drive"
depends on SH_DREAMCAST
select BLK_SCSI_REQUEST # only for the generic cdrom code
help
A standard SEGA Dreamcast comes with a modified CD ROM drive called a
"GD-ROM" by SEGA to signify it is capable of reading special disks
@ -114,6 +115,7 @@ config BLK_CPQ_CISS_DA
tristate "Compaq Smart Array 5xxx support"
depends on PCI
select CHECK_SIGNATURE
select BLK_SCSI_REQUEST
help
This is the driver for Compaq Smart Array 5xxx controllers.
Everyone using these boards should say Y here.
@ -386,6 +388,7 @@ config BLK_DEV_RAM_DAX
config CDROM_PKTCDVD
tristate "Packet writing on CD/DVD media (DEPRECATED)"
depends on !UML
select BLK_SCSI_REQUEST
help
Note: This driver is deprecated and will be removed from the
kernel in the near future!
@ -501,6 +504,16 @@ config VIRTIO_BLK
This is the virtual block driver for virtio. It can be used with
lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
config VIRTIO_BLK_SCSI
bool "SCSI passthrough request for the Virtio block driver"
depends on VIRTIO_BLK
select BLK_SCSI_REQUEST
---help---
Enable support for SCSI passthrough (e.g. the SG_IO ioctl) on
virtio-blk devices. This is only supported for the legacy
virtio protocol and not enabled by default by any hypervisor.
Your probably want to virtio-scsi instead.
config BLK_DEV_HD
bool "Very old hard disk (MFM/RLL/IDE) driver"
depends on HAVE_IDE

4
drivers/block/aoe/aoeblk.c
View file

@ -396,8 +396,8 @@ aoeblk_gdalloc(void *vp)
WARN_ON(d->gd);
WARN_ON(d->flags & DEVFL_UP);
blk_queue_max_hw_sectors(q, BLK_DEF_MAX_SECTORS);
q->backing_dev_info.name = "aoe";
q->backing_dev_info.ra_pages = READ_AHEAD / PAGE_SIZE;
q->backing_dev_info->name = "aoe";
q->backing_dev_info->ra_pages = READ_AHEAD / PAGE_SIZE;
d->bufpool = mp;
d->blkq = gd->queue = q;
q->queuedata = d;

77
drivers/block/cciss.c
View file

@ -52,6 +52,7 @@
#include <scsi/scsi.h>
#include <scsi/sg.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_request.h>
#include <linux/cdrom.h>
#include <linux/scatterlist.h>
#include <linux/kthread.h>
@ -1853,8 +1854,8 @@ static void cciss_softirq_done(struct request *rq)
dev_dbg(&h->pdev->dev, "Done with %p\n", rq);
/* set the residual count for pc requests */
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
rq->resid_len = c->err_info->ResidualCnt;
if (blk_rq_is_passthrough(rq))
scsi_req(rq)->resid_len = c->err_info->ResidualCnt;
blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
@ -1941,9 +1942,16 @@ static void cciss_get_serial_no(ctlr_info_t *h, int logvol,
static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
int drv_index)
{
disk->queue = blk_init_queue(do_cciss_request, &h->lock);
disk->queue = blk_alloc_queue(GFP_KERNEL);
if (!disk->queue)
goto init_queue_failure;
disk->queue->cmd_size = sizeof(struct scsi_request);
disk->queue->request_fn = do_cciss_request;
disk->queue->queue_lock = &h->lock;
if (blk_init_allocated_queue(disk->queue) < 0)
goto cleanup_queue;
sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
disk->major = h->major;
disk->first_minor = drv_index << NWD_SHIFT;
@ -3075,7 +3083,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
driver_byte = DRIVER_OK;
msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */
if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC)
if (blk_rq_is_passthrough(cmd->rq))
host_byte = DID_PASSTHROUGH;
else
host_byte = DID_OK;
@ -3084,7 +3092,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
host_byte, driver_byte);
if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)
if (!blk_rq_is_passthrough(cmd->rq))
dev_warn(&h->pdev->dev, "cmd %p "
"has SCSI Status 0x%x\n",
cmd, cmd->err_info->ScsiStatus);
@ -3095,31 +3103,23 @@ static inline int evaluate_target_status(ctlr_info_t *h,
sense_key = 0xf & cmd->err_info->SenseInfo[2];
/* no status or recovered error */
if (((sense_key == 0x0) || (sense_key == 0x1)) &&
(cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC))
!blk_rq_is_passthrough(cmd->rq))
error_value = 0;
if (check_for_unit_attention(h, cmd)) {
*retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC);
*retry_cmd = !blk_rq_is_passthrough(cmd->rq);
return 0;
}
/* Not SG_IO or similar? */
if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) {
if (!blk_rq_is_passthrough(cmd->rq)) {
if (error_value != 0)
dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION"
" sense key = 0x%x\n", cmd, sense_key);
return error_value;
}
/* SG_IO or similar, copy sense data back */
if (cmd->rq->sense) {
if (cmd->rq->sense_len > cmd->err_info->SenseLen)
cmd->rq->sense_len = cmd->err_info->SenseLen;
memcpy(cmd->rq->sense, cmd->err_info->SenseInfo,
cmd->rq->sense_len);
} else
cmd->rq->sense_len = 0;
scsi_req(cmd->rq)->sense_len = cmd->err_info->SenseLen;
return error_value;
}
@ -3146,15 +3146,14 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
break;
case CMD_DATA_UNDERRUN:
if (cmd->rq->cmd_type == REQ_TYPE_FS) {
if (!blk_rq_is_passthrough(cmd->rq)) {
dev_warn(&h->pdev->dev, "cmd %p has"
" completed with data underrun "
"reported\n", cmd);
cmd->rq->resid_len = cmd->err_info->ResidualCnt;
}
break;
case CMD_DATA_OVERRUN:
if (cmd->rq->cmd_type == REQ_TYPE_FS)
if (!blk_rq_is_passthrough(cmd->rq))
dev_warn(&h->pdev->dev, "cciss: cmd %p has"
" completed with data overrun "
"reported\n", cmd);
@ -3164,7 +3163,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"reported invalid\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_PROTOCOL_ERR:
@ -3172,7 +3171,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"protocol error\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_HARDWARE_ERR:
@ -3180,7 +3179,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
" hardware error\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_CONNECTION_LOST:
@ -3188,7 +3187,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"connection lost\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_ABORTED:
@ -3196,7 +3195,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"aborted\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ABORT);
break;
case CMD_ABORT_FAILED:
@ -3204,7 +3203,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"abort failed\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_UNSOLICITED_ABORT:
@ -3219,21 +3218,21 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"%p retried too many times\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ABORT);
break;
case CMD_TIMEOUT:
dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_UNABORTABLE:
dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
default:
@ -3242,7 +3241,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
cmd->err_info->CommandStatus);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
}
@ -3395,7 +3394,9 @@ static void do_cciss_request(struct request_queue *q)
c->Header.SGList = h->max_cmd_sgentries;
set_performant_mode(h, c);
if (likely(creq->cmd_type == REQ_TYPE_FS)) {
switch (req_op(creq)) {
case REQ_OP_READ:
case REQ_OP_WRITE:
if(h->cciss_read == CCISS_READ_10) {
c->Request.CDB[1] = 0;
c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */
@ -3425,12 +3426,16 @@ static void do_cciss_request(struct request_queue *q)
c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
c->Request.CDB[14] = c->Request.CDB[15] = 0;
}
} else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) {
c->Request.CDBLen = creq->cmd_len;
memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB);
} else {
break;
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
c->Request.CDBLen = scsi_req(creq)->cmd_len;
memcpy(c->Request.CDB, scsi_req(creq)->cmd, BLK_MAX_CDB);
scsi_req(creq)->sense = c->err_info->SenseInfo;
break;
default:
dev_warn(&h->pdev->dev, "bad request type %d\n",
creq->cmd_type);
creq->cmd_flags);
BUG();
}

6
drivers/block/drbd/drbd_main.c
View file

@ -2462,7 +2462,7 @@ static int drbd_congested(void *congested_data, int bdi_bits)
if (get_ldev(device)) {
q = bdev_get_queue(device->ldev->backing_bdev);
r = bdi_congested(&q->backing_dev_info, bdi_bits);
r = bdi_congested(q->backing_dev_info, bdi_bits);
put_ldev(device);
if (r)
reason = 'b';
@ -2834,8 +2834,8 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
/* we have no partitions. we contain only ourselves. */
device->this_bdev->bd_contains = device->this_bdev;
q->backing_dev_info.congested_fn = drbd_congested;
q->backing_dev_info.congested_data = device;
q->backing_dev_info->congested_fn = drbd_congested;
q->backing_dev_info->congested_data = device;
blk_queue_make_request(q, drbd_make_request);
blk_queue_write_cache(q, true, true);

12
drivers/block/drbd/drbd_nl.c
View file

@ -1328,11 +1328,13 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
if (b) {
blk_queue_stack_limits(q, b);
if (q->backing_dev_info.ra_pages != b->backing_dev_info.ra_pages) {
if (q->backing_dev_info->ra_pages !=
b->backing_dev_info->ra_pages) {
drbd_info(device, "Adjusting my ra_pages to backing device's (%lu -> %lu)\n",
q->backing_dev_info.ra_pages,
b->backing_dev_info.ra_pages);
q->backing_dev_info.ra_pages = b->backing_dev_info.ra_pages;
q->backing_dev_info->ra_pages,
b->backing_dev_info->ra_pages);
q->backing_dev_info->ra_pages =
b->backing_dev_info->ra_pages;
}
}
fixup_discard_if_not_supported(q);
@ -3345,7 +3347,7 @@ static void device_to_statistics(struct device_statistics *s,
s->dev_disk_flags = md->flags;
q = bdev_get_queue(device->ldev->backing_bdev);
s->dev_lower_blocked =
bdi_congested(&q->backing_dev_info,
bdi_congested(q->backing_dev_info,
(1 << WB_async_congested) |
(1 << WB_sync_congested));
put_ldev(device);

2
drivers/block/drbd/drbd_proc.c
View file

@ -288,7 +288,7 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "%2d: cs:Unconfigured\n", i);
} else {
/* reset device->congestion_reason */
bdi_rw_congested(&device->rq_queue->backing_dev_info);
bdi_rw_congested(device->rq_queue->backing_dev_info);
nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
wp = nc ? nc->wire_protocol - DRBD_PROT_A + 'A' : ' ';

2
drivers/block/drbd/drbd_req.c
View file

@ -938,7 +938,7 @@ static bool remote_due_to_read_balancing(struct drbd_device *device, sector_t se
switch (rbm) {
case RB_CONGESTED_REMOTE:
bdi = &device->ldev->backing_bdev->bd_disk->queue->backing_dev_info;
bdi = device->ldev->backing_bdev->bd_disk->queue->backing_dev_info;
return bdi_read_congested(bdi);
case RB_LEAST_PENDING:
return atomic_read(&device->local_cnt) >

4
drivers/block/floppy.c
View file

@ -2900,8 +2900,8 @@ static void do_fd_request(struct request_queue *q)
return;
if (WARN(atomic_read(&usage_count) == 0,
"warning: usage count=0, current_req=%p sect=%ld type=%x flags=%llx\n",
current_req, (long)blk_rq_pos(current_req), current_req->cmd_type,
"warning: usage count=0, current_req=%p sect=%ld flags=%llx\n",
current_req, (long)blk_rq_pos(current_req),
(unsigned long long) current_req->cmd_flags))
return;

45
drivers/block/hd.c
View file

@ -626,30 +626,29 @@ repeat:
req_data_dir(req) == READ ? "read" : "writ",
cyl, head, sec, nsect, bio_data(req->bio));
#endif
if (req->cmd_type == REQ_TYPE_FS) {
switch (rq_data_dir(req)) {
case READ:
hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_READ,
&read_intr);
if (reset)
goto repeat;
break;
case WRITE:
hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_WRITE,
&write_intr);
if (reset)
goto repeat;
if (wait_DRQ()) {
bad_rw_intr();
goto repeat;
}
outsw(HD_DATA, bio_data(req->bio), 256);
break;
default:
printk("unknown hd-command\n");
hd_end_request_cur(-EIO);
break;
switch (req_op(req)) {
case REQ_OP_READ:
hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_READ,
&read_intr);
if (reset)
goto repeat;
break;
case REQ_OP_WRITE:
hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_WRITE,
&write_intr);
if (reset)
goto repeat;
if (wait_DRQ()) {
bad_rw_intr();
goto repeat;
}
outsw(HD_DATA, bio_data(req->bio), 256);
break;
default:
printk("unknown hd-command\n");
hd_end_request_cur(-EIO);
break;
}
}

31
drivers/block/mg_disk.c
View file

@ -670,15 +670,17 @@ static void mg_request_poll(struct request_queue *q)
break;
}
if (unlikely(host->req->cmd_type != REQ_TYPE_FS)) {
mg_end_request_cur(host, -EIO);
continue;
}
if (rq_data_dir(host->req) == READ)
switch (req_op(host->req)) {
case REQ_OP_READ:
mg_read(host->req);
else
break;
case REQ_OP_WRITE:
mg_write(host->req);
break;
default:
mg_end_request_cur(host, -EIO);
break;
}
}
}
@ -687,13 +689,15 @@ static unsigned int mg_issue_req(struct request *req,
unsigned int sect_num,
unsigned int sect_cnt)
{
if (rq_data_dir(req) == READ) {
switch (req_op(host->req)) {
case REQ_OP_READ:
if (mg_out(host, sect_num, sect_cnt, MG_CMD_RD, &mg_read_intr)
!= MG_ERR_NONE) {
mg_bad_rw_intr(host);
return host->error;
}
} else {
break;
case REQ_OP_WRITE:
/* TODO : handler */
outb(ATA_NIEN, (unsigned long)host->dev_base + MG_REG_DRV_CTRL);
if (mg_out(host, sect_num, sect_cnt, MG_CMD_WR, &mg_write_intr)
@ -712,6 +716,10 @@ static unsigned int mg_issue_req(struct request *req,
mod_timer(&host->timer, jiffies + 3 * HZ);
outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
MG_REG_COMMAND);
break;
default:
mg_end_request_cur(host, -EIO);
break;
}
return MG_ERR_NONE;
}
@ -753,11 +761,6 @@ static void mg_request(struct request_queue *q)
continue;
}
if (unlikely(req->cmd_type != REQ_TYPE_FS)) {
mg_end_request_cur(host, -EIO);
continue;
}
if (!mg_issue_req(req, host, sect_num, sect_cnt))
return;
}

260
drivers/block/nbd.c
View file

@ -41,6 +41,9 @@
#include <linux/nbd.h>
static DEFINE_IDR(nbd_index_idr);
static DEFINE_MUTEX(nbd_index_mutex);
struct nbd_sock {
struct socket *sock;
struct mutex tx_lock;
@ -89,8 +92,9 @@ static struct dentry *nbd_dbg_dir;
#define NBD_MAGIC 0x68797548
static unsigned int nbds_max = 16;
static struct nbd_device *nbd_dev;
static int max_part;
static struct workqueue_struct *recv_workqueue;
static int part_shift;
static inline struct device *nbd_to_dev(struct nbd_device *nbd)
{
@ -193,13 +197,6 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
set_bit(NBD_TIMEDOUT, &nbd->runtime_flags);
req->errors++;
/*
* If our disconnect packet times out then we're already holding the
* config_lock and could deadlock here, so just set an error and return,
* we'll handle shutting everything down later.
*/
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
return BLK_EH_HANDLED;
mutex_lock(&nbd->config_lock);
sock_shutdown(nbd);
mutex_unlock(&nbd->config_lock);
@ -278,14 +275,29 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
u32 type;
u32 tag = blk_mq_unique_tag(req);
if (req_op(req) == REQ_OP_DISCARD)
switch (req_op(req)) {
case REQ_OP_DISCARD:
type = NBD_CMD_TRIM;
else if (req_op(req) == REQ_OP_FLUSH)
break;
case REQ_OP_FLUSH:
type = NBD_CMD_FLUSH;
else if (rq_data_dir(req) == WRITE)
break;
case REQ_OP_WRITE:
type = NBD_CMD_WRITE;
else
break;
case REQ_OP_READ:
type = NBD_CMD_READ;
break;
default:
return -EIO;
}
if (rq_data_dir(req) == WRITE &&
(nbd->flags & NBD_FLAG_READ_ONLY)) {
dev_err_ratelimited(disk_to_dev(nbd->disk),
"Write on read-only\n");
return -EIO;
}
memset(&request, 0, sizeof(request));
request.magic = htonl(NBD_REQUEST_MAGIC);
@ -510,18 +522,6 @@ static void nbd_handle_cmd(struct nbd_cmd *cmd, int index)
goto error_out;
}
if (req->cmd_type != REQ_TYPE_FS &&
req->cmd_type != REQ_TYPE_DRV_PRIV)
goto error_out;
if (req->cmd_type == REQ_TYPE_FS &&
rq_data_dir(req) == WRITE &&
(nbd->flags & NBD_FLAG_READ_ONLY)) {
dev_err_ratelimited(disk_to_dev(nbd->disk),
"Write on read-only\n");
goto error_out;
}
req->errors = 0;
nsock = nbd->socks[index];
@ -785,7 +785,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
INIT_WORK(&args[i].work, recv_work);
args[i].nbd = nbd;
args[i].index = i;
queue_work(system_long_wq, &args[i].work);
queue_work(recv_workqueue, &args[i].work);
}
wait_event_interruptible(nbd->recv_wq,
atomic_read(&nbd->recv_threads) == 0);
@ -996,6 +996,103 @@ static struct blk_mq_ops nbd_mq_ops = {
.timeout = nbd_xmit_timeout,
};
static void nbd_dev_remove(struct nbd_device *nbd)
{
struct gendisk *disk = nbd->disk;
nbd->magic = 0;
if (disk) {
del_gendisk(disk);
blk_cleanup_queue(disk->queue);
blk_mq_free_tag_set(&nbd->tag_set);
put_disk(disk);
}
kfree(nbd);
}
static int nbd_dev_add(int index)
{
struct nbd_device *nbd;
struct gendisk *disk;
struct request_queue *q;
int err = -ENOMEM;
nbd = kzalloc(sizeof(struct nbd_device), GFP_KERNEL);
if (!nbd)
goto out;
disk = alloc_disk(1 << part_shift);
if (!disk)
goto out_free_nbd;
if (index >= 0) {
err = idr_alloc(&nbd_index_idr, nbd, index, index + 1,
GFP_KERNEL);
if (err == -ENOSPC)
err = -EEXIST;
} else {
err = idr_alloc(&nbd_index_idr, nbd, 0, 0, GFP_KERNEL);
if (err >= 0)
index = err;
}
if (err < 0)
goto out_free_disk;
nbd->disk = disk;
nbd->tag_set.ops = &nbd_mq_ops;
nbd->tag_set.nr_hw_queues = 1;
nbd->tag_set.queue_depth = 128;
nbd->tag_set.numa_node = NUMA_NO_NODE;
nbd->tag_set.cmd_size = sizeof(struct nbd_cmd);
nbd->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
nbd->tag_set.driver_data = nbd;
err = blk_mq_alloc_tag_set(&nbd->tag_set);
if (err)
goto out_free_idr;
q = blk_mq_init_queue(&nbd->tag_set);
if (IS_ERR(q)) {
err = PTR_ERR(q);
goto out_free_tags;
}
disk->queue = q;
/*
* Tell the block layer that we are not a rotational device
*/
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, disk->queue);
disk->queue->limits.discard_granularity = 512;
blk_queue_max_discard_sectors(disk->queue, UINT_MAX);
disk->queue->limits.discard_zeroes_data = 0;
blk_queue_max_hw_sectors(disk->queue, 65536);
disk->queue->limits.max_sectors = 256;
nbd->magic = NBD_MAGIC;
mutex_init(&nbd->config_lock);
disk->major = NBD_MAJOR;
disk->first_minor = index << part_shift;
disk->fops = &nbd_fops;
disk->private_data = nbd;
sprintf(disk->disk_name, "nbd%d", index);
init_waitqueue_head(&nbd->recv_wq);
nbd_reset(nbd);
add_disk(disk);
return index;
out_free_tags:
blk_mq_free_tag_set(&nbd->tag_set);
out_free_idr:
idr_remove(&nbd_index_idr, index);
out_free_disk:
put_disk(disk);
out_free_nbd:
kfree(nbd);
out:
return err;
}
/*
* And here should be modules and kernel interface
* (Just smiley confuses emacs :-)
@ -1003,9 +1100,7 @@ static struct blk_mq_ops nbd_mq_ops = {
static int __init nbd_init(void)
{
int err = -ENOMEM;
int i;
int part_shift;
BUILD_BUG_ON(sizeof(struct nbd_request) != 28);
@ -1034,111 +1129,38 @@ static int __init nbd_init(void)
if (nbds_max > 1UL << (MINORBITS - part_shift))
return -EINVAL;
nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
if (!nbd_dev)
recv_workqueue = alloc_workqueue("knbd-recv",
WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
if (!recv_workqueue)
return -ENOMEM;
for (i = 0; i < nbds_max; i++) {
struct request_queue *q;
struct gendisk *disk = alloc_disk(1 << part_shift);
if (!disk)
goto out;
nbd_dev[i].disk = disk;
nbd_dev[i].tag_set.ops = &nbd_mq_ops;
nbd_dev[i].tag_set.nr_hw_queues = 1;
nbd_dev[i].tag_set.queue_depth = 128;
nbd_dev[i].tag_set.numa_node = NUMA_NO_NODE;
nbd_dev[i].tag_set.cmd_size = sizeof(struct nbd_cmd);
nbd_dev[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
nbd_dev[i].tag_set.driver_data = &nbd_dev[i];
err = blk_mq_alloc_tag_set(&nbd_dev[i].tag_set);
if (err) {
put_disk(disk);
goto out;
}
/*
* The new linux 2.5 block layer implementation requires
* every gendisk to have its very own request_queue struct.
* These structs are big so we dynamically allocate them.
*/
q = blk_mq_init_queue(&nbd_dev[i].tag_set);
if (IS_ERR(q)) {
blk_mq_free_tag_set(&nbd_dev[i].tag_set);
put_disk(disk);
goto out;
}
disk->queue = q;
/*
* Tell the block layer that we are not a rotational device
*/
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, disk->queue);
disk->queue->limits.discard_granularity = 512;
blk_queue_max_discard_sectors(disk->queue, UINT_MAX);
disk->queue->limits.discard_zeroes_data = 0;
blk_queue_max_hw_sectors(disk->queue, 65536);
disk->queue->limits.max_sectors = 256;
}
if (register_blkdev(NBD_MAJOR, "nbd")) {
err = -EIO;
goto out;
}
printk(KERN_INFO "nbd: registered device at major %d\n", NBD_MAJOR);
if (register_blkdev(NBD_MAJOR, "nbd"))
return -EIO;
nbd_dbg_init();
for (i = 0; i < nbds_max; i++) {
struct gendisk *disk = nbd_dev[i].disk;
nbd_dev[i].magic = NBD_MAGIC;
mutex_init(&nbd_dev[i].config_lock);
disk->major = NBD_MAJOR;
disk->first_minor = i << part_shift;
disk->fops = &nbd_fops;
disk->private_data = &nbd_dev[i];
sprintf(disk->disk_name, "nbd%d", i);
init_waitqueue_head(&nbd_dev[i].recv_wq);
nbd_reset(&nbd_dev[i]);
add_disk(disk);
}
mutex_lock(&nbd_index_mutex);
for (i = 0; i < nbds_max; i++)
nbd_dev_add(i);
mutex_unlock(&nbd_index_mutex);
return 0;
}
static int nbd_exit_cb(int id, void *ptr, void *data)
{
struct nbd_device *nbd = ptr;
nbd_dev_remove(nbd);
return 0;
out:
while (i--) {
blk_mq_free_tag_set(&nbd_dev[i].tag_set);
blk_cleanup_queue(nbd_dev[i].disk->queue);
put_disk(nbd_dev[i].disk);
}
kfree(nbd_dev);
return err;
}
static void __exit nbd_cleanup(void)
{
int i;
nbd_dbg_close();
for (i = 0; i < nbds_max; i++) {
struct gendisk *disk = nbd_dev[i].disk;
nbd_dev[i].magic = 0;
if (disk) {
del_gendisk(disk);
blk_cleanup_queue(disk->queue);
blk_mq_free_tag_set(&nbd_dev[i].tag_set);
put_disk(disk);
}
}
idr_for_each(&nbd_index_idr, &nbd_exit_cb, NULL);
idr_destroy(&nbd_index_idr);
destroy_workqueue(recv_workqueue);
unregister_blkdev(NBD_MAJOR, "nbd");
kfree(nbd_dev);
printk(KERN_INFO "nbd: unregistered device at major %d\n", NBD_MAJOR);
}
module_init(nbd_init);

4
drivers/block/null_blk.c
View file

@ -432,11 +432,11 @@ static int null_lnvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
struct request *rq;
struct bio *bio = rqd->bio;
rq = blk_mq_alloc_request(q, bio_data_dir(bio), 0);
rq = blk_mq_alloc_request(q,
op_is_write(bio_op(bio)) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return -ENOMEM;
rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->__sector = bio->bi_iter.bi_sector;
rq->ioprio = bio_prio(bio);

6
drivers/block/osdblk.c
View file

@ -308,12 +308,6 @@ static void osdblk_rq_fn(struct request_queue *q)
if (!rq)
break;
/* filter out block requests we don't understand */
if (rq->cmd_type != REQ_TYPE_FS) {
blk_end_request_all(rq, 0);
continue;
}
/* deduce our operation (read, write, flush) */
/* I wish the block layer simplified cmd_type/cmd_flags/cmd[]
* into a clearly defined set of RPC commands:

1
drivers/block/paride/Kconfig
View file

@ -25,6 +25,7 @@ config PARIDE_PD
config PARIDE_PCD
tristate "Parallel port ATAPI CD-ROMs"
depends on PARIDE
select BLK_SCSI_REQUEST # only for the generic cdrom code
---help---
This option enables the high-level driver for ATAPI CD-ROM devices
connected through a parallel port. If you chose to build PARIDE

15
drivers/block/paride/pd.c
View file

@ -439,18 +439,16 @@ static int pd_retries = 0; /* i/o error retry count */
static int pd_block; /* address of next requested block */
static int pd_count; /* number of blocks still to do */
static int pd_run; /* sectors in current cluster */
static int pd_cmd; /* current command READ/WRITE */
static char *pd_buf; /* buffer for request in progress */
static enum action do_pd_io_start(void)
{
if (pd_req->cmd_type == REQ_TYPE_DRV_PRIV) {
switch (req_op(pd_req)) {
case REQ_OP_DRV_IN:
phase = pd_special;
return pd_special();
}
pd_cmd = rq_data_dir(pd_req);
if (pd_cmd == READ || pd_cmd == WRITE) {
case REQ_OP_READ:
case REQ_OP_WRITE:
pd_block = blk_rq_pos(pd_req);
pd_count = blk_rq_cur_sectors(pd_req);
if (pd_block + pd_count > get_capacity(pd_req->rq_disk))
@ -458,7 +456,7 @@ static enum action do_pd_io_start(void)
pd_run = blk_rq_sectors(pd_req);
pd_buf = bio_data(pd_req->bio);
pd_retries = 0;
if (pd_cmd == READ)
if (req_op(pd_req) == REQ_OP_READ)
return do_pd_read_start();
else
return do_pd_write_start();
@ -723,11 +721,10 @@ static int pd_special_command(struct pd_unit *disk,
struct request *rq;
int err = 0;
rq = blk_get_request(disk->gd->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(disk->gd->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->special = func;
err = blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);

12
drivers/block/pktcdvd.c
View file

@ -704,10 +704,10 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
int ret = 0;
rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ?
WRITE : READ, __GFP_RECLAIM);
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
blk_rq_set_block_pc(rq);
scsi_req_init(rq);
if (cgc->buflen) {
ret = blk_rq_map_kern(q, rq, cgc->buffer, cgc->buflen,
@ -716,8 +716,8 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
goto out;
}
rq->cmd_len = COMMAND_SIZE(cgc->cmd[0]);
memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
scsi_req(rq)->cmd_len = COMMAND_SIZE(cgc->cmd[0]);
memcpy(scsi_req(rq)->cmd, cgc->cmd, CDROM_PACKET_SIZE);
rq->timeout = 60*HZ;
if (cgc->quiet)
@ -1243,7 +1243,7 @@ try_next_bio:
&& pd->bio_queue_size <= pd->write_congestion_off);
spin_unlock(&pd->lock);
if (wakeup) {
clear_bdi_congested(&pd->disk->queue->backing_dev_info,
clear_bdi_congested(pd->disk->queue->backing_dev_info,
BLK_RW_ASYNC);
}
@ -2370,7 +2370,7 @@ static void pkt_make_request_write(struct request_queue *q, struct bio *bio)
spin_lock(&pd->lock);
if (pd->write_congestion_on > 0
&& pd->bio_queue_size >= pd->write_congestion_on) {
set_bdi_congested(&q->backing_dev_info, BLK_RW_ASYNC);
set_bdi_congested(q->backing_dev_info, BLK_RW_ASYNC);
do {
spin_unlock(&pd->lock);
congestion_wait(BLK_RW_ASYNC, HZ);

15
drivers/block/ps3disk.c
View file

@ -196,16 +196,19 @@ static void ps3disk_do_request(struct ps3_storage_device *dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
while ((req = blk_fetch_request(q))) {
if (req_op(req) == REQ_OP_FLUSH) {
switch (req_op(req)) {
case REQ_OP_FLUSH:
if (ps3disk_submit_flush_request(dev, req))
break;
} else if (req->cmd_type == REQ_TYPE_FS) {
return;
break;
case REQ_OP_READ:
case REQ_OP_WRITE:
if (ps3disk_submit_request_sg(dev, req))
break;
} else {
return;
break;
default:
blk_dump_rq_flags(req, DEVICE_NAME " bad request");
__blk_end_request_all(req, -EIO);
continue;
}
}
}

24
drivers/block/rbd.c
View file

@ -4099,20 +4099,22 @@ static void rbd_queue_workfn(struct work_struct *work)
bool must_be_locked;
int result;
if (rq->cmd_type != REQ_TYPE_FS) {
dout("%s: non-fs request type %d\n", __func__,
(int) rq->cmd_type);
switch (req_op(rq)) {
case REQ_OP_DISCARD:
op_type = OBJ_OP_DISCARD;
break;
case REQ_OP_WRITE:
op_type = OBJ_OP_WRITE;
break;
case REQ_OP_READ:
op_type = OBJ_OP_READ;
break;
default:
dout("%s: non-fs request type %d\n", __func__, req_op(rq));
result = -EIO;
goto err;
}
if (req_op(rq) == REQ_OP_DISCARD)
op_type = OBJ_OP_DISCARD;
else if (req_op(rq) == REQ_OP_WRITE)
op_type = OBJ_OP_WRITE;
else
op_type = OBJ_OP_READ;
/* Ignore/skip any zero-length requests */
if (!length) {
@ -4524,7 +4526,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
q->limits.discard_zeroes_data = 1;
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
disk->queue = q;

15
drivers/block/skd_main.c
View file

@ -1204,10 +1204,11 @@ static void skd_complete_special(struct skd_device *skdev,
static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode,
uint cmd_in, ulong arg)
{
int rc = 0;
static const int sg_version_num = 30527;
int rc = 0, timeout;
struct gendisk *disk = bdev->bd_disk;
struct skd_device *skdev = disk->private_data;
void __user *p = (void *)arg;
int __user *p = (int __user *)arg;
pr_debug("%s:%s:%d %s: CMD[%s] ioctl mode 0x%x, cmd 0x%x arg %0lx\n",
skdev->name, __func__, __LINE__,
@ -1218,12 +1219,18 @@ static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode,
switch (cmd_in) {
case SG_SET_TIMEOUT:
rc = get_user(timeout, p);
if (!rc)
disk->queue->sg_timeout = clock_t_to_jiffies(timeout);
break;
case SG_GET_TIMEOUT:
rc = jiffies_to_clock_t(disk->queue->sg_timeout);
break;
case SG_GET_VERSION_NUM:
rc = scsi_cmd_ioctl(disk->queue, disk, mode, cmd_in, p);
rc = put_user(sg_version_num, p);
break;
case SG_IO:
rc = skd_ioctl_sg_io(skdev, mode, p);
rc = skd_ioctl_sg_io(skdev, mode, (void __user *)arg);
break;
default:

4
drivers/block/sx8.c
View file

@ -567,7 +567,7 @@ static struct carm_request *carm_get_special(struct carm_host *host)
if (!crq)
return NULL;
rq = blk_get_request(host->oob_q, WRITE /* bogus */, GFP_KERNEL);
rq = blk_get_request(host->oob_q, REQ_OP_DRV_OUT, GFP_KERNEL);
if (IS_ERR(rq)) {
spin_lock_irqsave(&host->lock, flags);
carm_put_request(host, crq);
@ -620,7 +620,6 @@ 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", idx);
crq->rq->cmd_type = REQ_TYPE_DRV_PRIV;
crq->rq->special = crq;
blk_execute_rq_nowait(host->oob_q, NULL, crq->rq, true, NULL);
@ -661,7 +660,6 @@ 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", idx);
crq->rq->cmd_type = REQ_TYPE_DRV_PRIV;
crq->rq->special = crq;
blk_execute_rq_nowait(host->oob_q, NULL, crq->rq, true, NULL);

209
drivers/block/virtio_blk.c
View file

@ -52,11 +52,13 @@ struct virtio_blk {
};
struct virtblk_req {
struct request *req;
struct virtio_blk_outhdr out_hdr;
struct virtio_scsi_inhdr in_hdr;
u8 status;
#ifdef CONFIG_VIRTIO_BLK_SCSI
struct scsi_request sreq; /* for SCSI passthrough, must be first */
u8 sense[SCSI_SENSE_BUFFERSIZE];
struct virtio_scsi_inhdr in_hdr;
#endif
struct virtio_blk_outhdr out_hdr;
u8 status;
struct scatterlist sg[];
};
@ -72,28 +74,23 @@ static inline int virtblk_result(struct virtblk_req *vbr)
}
}
static int __virtblk_add_req(struct virtqueue *vq,
struct virtblk_req *vbr,
struct scatterlist *data_sg,
bool have_data)
/*
* If this is a packet command we need a couple of additional headers. Behind
* the normal outhdr we put a segment with the scsi command block, and before
* the normal inhdr we put the sense data and the inhdr with additional status
* information.
*/
#ifdef CONFIG_VIRTIO_BLK_SCSI
static int virtblk_add_req_scsi(struct virtqueue *vq, struct virtblk_req *vbr,
struct scatterlist *data_sg, bool have_data)
{
struct scatterlist hdr, status, cmd, sense, inhdr, *sgs[6];
unsigned int num_out = 0, num_in = 0;
__virtio32 type = vbr->out_hdr.type & ~cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT);
sg_init_one(&hdr, &vbr->out_hdr, sizeof(vbr->out_hdr));
sgs[num_out++] = &hdr;
/*
* If this is a packet command we need a couple of additional headers.
* Behind the normal outhdr we put a segment with the scsi command
* block, and before the normal inhdr we put the sense data and the
* inhdr with additional status information.
*/
if (type == cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_SCSI_CMD)) {
sg_init_one(&cmd, vbr->req->cmd, vbr->req->cmd_len);
sgs[num_out++] = &cmd;
}
sg_init_one(&cmd, vbr->sreq.cmd, vbr->sreq.cmd_len);
sgs[num_out++] = &cmd;
if (have_data) {
if (vbr->out_hdr.type & cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT))
@ -102,12 +99,69 @@ static int __virtblk_add_req(struct virtqueue *vq,
sgs[num_out + num_in++] = data_sg;
}
if (type == cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_SCSI_CMD)) {
memcpy(vbr->sense, vbr->req->sense, SCSI_SENSE_BUFFERSIZE);
sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE);
sgs[num_out + num_in++] = &sense;
sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr));
sgs[num_out + num_in++] = &inhdr;
sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE);
sgs[num_out + num_in++] = &sense;
sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr));
sgs[num_out + num_in++] = &inhdr;
sg_init_one(&status, &vbr->status, sizeof(vbr->status));
sgs[num_out + num_in++] = &status;
return virtqueue_add_sgs(vq, sgs, num_out, num_in, vbr, GFP_ATOMIC);
}
static inline void virtblk_scsi_reques_done(struct request *req)
{
struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
struct virtio_blk *vblk = req->q->queuedata;
struct scsi_request *sreq = &vbr->sreq;
sreq->resid_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.residual);
sreq->sense_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.sense_len);
req->errors = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.errors);
}
static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long data)
{
struct gendisk *disk = bdev->bd_disk;
struct virtio_blk *vblk = disk->private_data;
/*
* Only allow the generic SCSI ioctls if the host can support it.
*/
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
return -ENOTTY;
return scsi_cmd_blk_ioctl(bdev, mode, cmd,
(void __user *)data);
}
#else
static inline int virtblk_add_req_scsi(struct virtqueue *vq,
struct virtblk_req *vbr, struct scatterlist *data_sg,
bool have_data)
{
return -EIO;
}
static inline void virtblk_scsi_reques_done(struct request *req)
{
}
#define virtblk_ioctl NULL
#endif /* CONFIG_VIRTIO_BLK_SCSI */
static int virtblk_add_req(struct virtqueue *vq, struct virtblk_req *vbr,
struct scatterlist *data_sg, bool have_data)
{
struct scatterlist hdr, status, *sgs[3];
unsigned int num_out = 0, num_in = 0;
sg_init_one(&hdr, &vbr->out_hdr, sizeof(vbr->out_hdr));
sgs[num_out++] = &hdr;
if (have_data) {
if (vbr->out_hdr.type & cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT))
sgs[num_out++] = data_sg;
else
sgs[num_out + num_in++] = data_sg;
}
sg_init_one(&status, &vbr->status, sizeof(vbr->status));
@ -119,15 +173,16 @@ static int __virtblk_add_req(struct virtqueue *vq,
static inline void virtblk_request_done(struct request *req)
{
struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
struct virtio_blk *vblk = req->q->queuedata;
int error = virtblk_result(vbr);
if (req->cmd_type == REQ_TYPE_BLOCK_PC) {
req->resid_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.residual);
req->sense_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.sense_len);
req->errors = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.errors);
} else if (req->cmd_type == REQ_TYPE_DRV_PRIV) {
switch (req_op(req)) {
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
virtblk_scsi_reques_done(req);
break;
case REQ_OP_DRV_IN:
req->errors = (error != 0);
break;
}
blk_mq_end_request(req, error);
@ -146,7 +201,9 @@ static void virtblk_done(struct virtqueue *vq)
do {
virtqueue_disable_cb(vq);
while ((vbr = virtqueue_get_buf(vblk->vqs[qid].vq, &len)) != NULL) {
blk_mq_complete_request(vbr->req, vbr->req->errors);
struct request *req = blk_mq_rq_from_pdu(vbr);
blk_mq_complete_request(req, req->errors);
req_done = true;
}
if (unlikely(virtqueue_is_broken(vq)))
@ -170,49 +227,50 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
int qid = hctx->queue_num;
int err;
bool notify = false;
u32 type;
BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
vbr->req = req;
if (req_op(req) == REQ_OP_FLUSH) {
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_FLUSH);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
} else {
switch (req->cmd_type) {
case REQ_TYPE_FS:
vbr->out_hdr.type = 0;
vbr->out_hdr.sector = cpu_to_virtio64(vblk->vdev, blk_rq_pos(vbr->req));
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
break;
case REQ_TYPE_BLOCK_PC:
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_SCSI_CMD);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
break;
case REQ_TYPE_DRV_PRIV:
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_GET_ID);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
break;
default:
/* We don't put anything else in the queue. */
BUG();
}
switch (req_op(req)) {
case REQ_OP_READ:
case REQ_OP_WRITE:
type = 0;
break;
case REQ_OP_FLUSH:
type = VIRTIO_BLK_T_FLUSH;
break;
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
type = VIRTIO_BLK_T_SCSI_CMD;
break;
case REQ_OP_DRV_IN:
type = VIRTIO_BLK_T_GET_ID;
break;
default:
WARN_ON_ONCE(1);
return BLK_MQ_RQ_QUEUE_ERROR;
}
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, type);
vbr->out_hdr.sector = type ?
0 : cpu_to_virtio64(vblk->vdev, blk_rq_pos(req));
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(req));
blk_mq_start_request(req);
num = blk_rq_map_sg(hctx->queue, vbr->req, vbr->sg);
num = blk_rq_map_sg(hctx->queue, req, vbr->sg);
if (num) {
if (rq_data_dir(vbr->req) == WRITE)
if (rq_data_dir(req) == WRITE)
vbr->out_hdr.type |= cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_OUT);
else
vbr->out_hdr.type |= cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_IN);
}
spin_lock_irqsave(&vblk->vqs[qid].lock, flags);
err = __virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num);
if (req_op(req) == REQ_OP_SCSI_IN || req_op(req) == REQ_OP_SCSI_OUT)
err = virtblk_add_req_scsi(vblk->vqs[qid].vq, vbr, vbr->sg, num);
else
err = virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num);
if (err) {
virtqueue_kick(vblk->vqs[qid].vq);
blk_mq_stop_hw_queue(hctx);
@ -242,10 +300,9 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
struct request *req;
int err;
req = blk_get_request(q, READ, GFP_KERNEL);
req = blk_get_request(q, REQ_OP_DRV_IN, GFP_KERNEL);
if (IS_ERR(req))
return PTR_ERR(req);
req->cmd_type = REQ_TYPE_DRV_PRIV;
err = blk_rq_map_kern(q, req, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL);
if (err)
@ -257,22 +314,6 @@ out:
return err;
}
static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long data)
{
struct gendisk *disk = bdev->bd_disk;
struct virtio_blk *vblk = disk->private_data;
/*
* Only allow the generic SCSI ioctls if the host can support it.
*/
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
return -ENOTTY;
return scsi_cmd_blk_ioctl(bdev, mode, cmd,
(void __user *)data);
}
/* We provide getgeo only to please some old bootloader/partitioning tools */
static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo)
{
@ -538,6 +579,9 @@ static int virtblk_init_request(void *data, struct request *rq,
struct virtio_blk *vblk = data;
struct virtblk_req *vbr = blk_mq_rq_to_pdu(rq);
#ifdef CONFIG_VIRTIO_BLK_SCSI
vbr->sreq.sense = vbr->sense;
#endif
sg_init_table(vbr->sg, vblk->sg_elems);
return 0;
}
@ -821,7 +865,10 @@ static const struct virtio_device_id id_table[] = {
static unsigned int features_legacy[] = {
VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_GEOMETRY,
VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE, VIRTIO_BLK_F_SCSI,
VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
#ifdef CONFIG_VIRTIO_BLK_SCSI
VIRTIO_BLK_F_SCSI,
#endif
VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_CONFIG_WCE,
VIRTIO_BLK_F_MQ,
}

2
drivers/block/xen-blkfront.c
View file

@ -865,7 +865,7 @@ static inline void flush_requests(struct blkfront_ring_info *rinfo)
static inline bool blkif_request_flush_invalid(struct request *req,
struct blkfront_info *info)
{
return ((req->cmd_type != REQ_TYPE_FS) ||
return (blk_rq_is_passthrough(req) ||
((req_op(req) == REQ_OP_FLUSH) &&
!info->feature_flush) ||
((req->cmd_flags & REQ_FUA) &&

2
drivers/block/xsysace.c
View file

@ -468,7 +468,7 @@ static struct request *ace_get_next_request(struct request_queue *q)
struct request *req;
while ((req = blk_peek_request(q)) != NULL) {
if (req->cmd_type == REQ_TYPE_FS)
if (!blk_rq_is_passthrough(req))
break;
blk_start_request(req);
__blk_end_request_all(req, -EIO);

2
drivers/block/zram/zram_drv.c
View file

@ -117,7 +117,7 @@ static void zram_revalidate_disk(struct zram *zram)
{
revalidate_disk(zram->disk);
/* revalidate_disk reset the BDI_CAP_STABLE_WRITES so set again */
zram->disk->queue->backing_dev_info.capabilities |=
zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
}