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block: fold cmd_type into the REQ_OP_ space 

Instead of keeping two levels of indirection for requests types, fold it
all into the operations.  The little caveat here is that previously
cmd_type only applied to struct request, while the request and bio op
fields were set to plain REQ_OP_READ/WRITE even for passthrough
operations.

Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
private requests, althought it has to add two for each so that we
can communicate the data in/out nature of the request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Christoph Hellwig 2017-01-31 16:57:31 +01:00 committed by Jens Axboe
parent 2f5a8e80f7
commit aebf526b53
53 changed files with 338 additions and 326 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
block/bio.c
View File

@ -1227,9 +1227,6 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
if (!bio)
goto out_bmd;
if (iter->type & WRITE)
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
ret = 0;
if (map_data) {
@ -1394,12 +1391,6 @@ struct bio *bio_map_user_iov(struct request_queue *q,
kfree(pages);
/*
* set data direction, and check if mapped pages need bouncing
*/
if (iter->type & WRITE)
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
bio_set_flag(bio, BIO_USER_MAPPED);
/*
@ -1590,7 +1581,6 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
bio->bi_private = data;
} else {
bio->bi_end_io = bio_copy_kern_endio;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
}
return bio;

6
block/blk-core.c
View File

@ -158,8 +158,8 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
void blk_dump_rq_flags(struct request *rq, char *msg)
{
printk(KERN_INFO "%s: dev %s: type=%x, flags=%llx\n", msg,
rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->cmd_type,
printk(KERN_INFO "%s: dev %s: flags=%llx\n", msg,
rq->rq_disk ? rq->rq_disk->disk_name : "?",
(unsigned long long) rq->cmd_flags);
printk(KERN_INFO " sector %llu, nr/cnr %u/%u\n",
@ -1593,7 +1593,6 @@ out:
void init_request_from_bio(struct request *req, struct bio *bio)
{
req->cmd_type = REQ_TYPE_FS;
if (bio->bi_opf & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@ -2983,7 +2982,6 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone);
static void __blk_rq_prep_clone(struct request *dst, struct request *src)
{
dst->cpu = src->cpu;
dst->cmd_type = src->cmd_type;
dst->__sector = blk_rq_pos(src);
dst->__data_len = blk_rq_bytes(src);
dst->nr_phys_segments = src->nr_phys_segments;

1
block/blk-flush.c
View File

@ -327,7 +327,6 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq)
blk_mq_tag_set_rq(hctx, first_rq->tag, flush_rq);
}
flush_rq->cmd_type = REQ_TYPE_FS;
flush_rq->cmd_flags = REQ_OP_FLUSH | REQ_PREFLUSH;
flush_rq->rq_flags |= RQF_FLUSH_SEQ;
flush_rq->rq_disk = first_rq->rq_disk;

13
block/blk-map.c
View File

@ -16,8 +16,6 @@
int blk_rq_append_bio(struct request *rq, struct bio *bio)
{
if (!rq->bio) {
rq->cmd_flags &= REQ_OP_MASK;
rq->cmd_flags |= (bio->bi_opf & REQ_OP_MASK);
blk_rq_bio_prep(rq->q, rq, bio);
} else {
if (!ll_back_merge_fn(rq->q, rq, bio))
@ -62,6 +60,9 @@ static int __blk_rq_map_user_iov(struct request *rq,
if (IS_ERR(bio))
return PTR_ERR(bio);
bio->bi_opf &= ~REQ_OP_MASK;
bio->bi_opf |= req_op(rq);
if (map_data && map_data->null_mapped)
bio_set_flag(bio, BIO_NULL_MAPPED);
@ -90,7 +91,7 @@ static int __blk_rq_map_user_iov(struct request *rq,
}
/**
* blk_rq_map_user_iov - map user data to a request, for REQ_TYPE_BLOCK_PC usage
* blk_rq_map_user_iov - map user data to a request, for passthrough requests
* @q: request queue where request should be inserted
* @rq: request to map data to
* @map_data: pointer to the rq_map_data holding pages (if necessary)
@ -199,7 +200,7 @@ int blk_rq_unmap_user(struct bio *bio)
EXPORT_SYMBOL(blk_rq_unmap_user);
/**
* blk_rq_map_kern - map kernel data to a request, for REQ_TYPE_BLOCK_PC usage
* blk_rq_map_kern - map kernel data to a request, for passthrough requests
* @q: request queue where request should be inserted
* @rq: request to fill
* @kbuf: the kernel buffer
@ -234,8 +235,8 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
if (IS_ERR(bio))
return PTR_ERR(bio);
if (!reading)
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
bio->bi_opf &= ~REQ_OP_MASK;
bio->bi_opf |= req_op(rq);
if (do_copy)
rq->rq_flags |= RQF_COPY_USER;

4
block/blk-mq-debugfs.c
View File

@ -88,8 +88,8 @@ static int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
{
struct request *rq = list_entry_rq(v);
seq_printf(m, "%p {.cmd_type=%u, .cmd_flags=0x%x, .rq_flags=0x%x, .tag=%d, .internal_tag=%d}\n",
rq, rq->cmd_type, rq->cmd_flags, (unsigned int)rq->rq_flags,
seq_printf(m, "%p {.cmd_flags=0x%x, .rq_flags=0x%x, .tag=%d, .internal_tag=%d}\n",
rq, rq->cmd_flags, (unsigned int)rq->rq_flags,
rq->tag, rq->internal_tag);
return 0;
}

17
block/bsg.c
View File

@ -177,7 +177,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
* Check if sg_io_v4 from user is allowed and valid
*/
static int
bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw)
bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *op)
{
int ret = 0;
@ -198,7 +198,7 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw)
ret = -EINVAL;
}
*rw = hdr->dout_xfer_len ? WRITE : READ;
*op = hdr->dout_xfer_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN;
return ret;
}
@ -210,8 +210,8 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
{
struct request_queue *q = bd->queue;
struct request *rq, *next_rq = NULL;
int ret, rw;
unsigned int dxfer_len;
int ret;
unsigned int op, dxfer_len;
void __user *dxferp = NULL;
struct bsg_class_device *bcd = &q->bsg_dev;
@ -226,14 +226,14 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp,
hdr->din_xfer_len);
ret = bsg_validate_sgv4_hdr(hdr, &rw);
ret = bsg_validate_sgv4_hdr(hdr, &op);
if (ret)
return ERR_PTR(ret);
/*
* map scatter-gather elements separately and string them to request
*/
rq = blk_get_request(q, rw, GFP_KERNEL);
rq = blk_get_request(q, op, GFP_KERNEL);
if (IS_ERR(rq))
return rq;
scsi_req_init(rq);
@ -242,20 +242,19 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
if (ret)
goto out;
if (rw == WRITE && hdr->din_xfer_len) {
if (op == REQ_OP_SCSI_OUT && hdr->din_xfer_len) {
if (!test_bit(QUEUE_FLAG_BIDI, &q->queue_flags)) {
ret = -EOPNOTSUPP;
goto out;
}
next_rq = blk_get_request(q, READ, GFP_KERNEL);
next_rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(next_rq)) {
ret = PTR_ERR(next_rq);
next_rq = NULL;
goto out;
}
rq->next_rq = next_rq;
next_rq->cmd_type = rq->cmd_type;
dxferp = (void __user *)(unsigned long)hdr->din_xferp;
ret = blk_rq_map_user(q, next_rq, NULL, dxferp,

9
block/scsi_ioctl.c
View File

@ -321,7 +321,8 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
at_head = 1;
ret = -ENOMEM;
rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
rq = blk_get_request(q, writing ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
GFP_KERNEL);
if (IS_ERR(rq))
return PTR_ERR(rq);
req = scsi_req(rq);
@ -448,7 +449,8 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
}
rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_RECLAIM);
rq = blk_get_request(q, in_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
__GFP_RECLAIM);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto error_free_buffer;
@ -537,7 +539,7 @@ static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq;
int err;
rq = blk_get_request(q, WRITE, __GFP_RECLAIM);
rq = blk_get_request(q, REQ_OP_SCSI_OUT, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
scsi_req_init(rq);
@ -745,7 +747,6 @@ void scsi_req_init(struct request *rq)
{
struct scsi_request *req = scsi_req(rq);
rq->cmd_type = REQ_TYPE_BLOCK_PC;
memset(req->__cmd, 0, sizeof(req->__cmd));
req->cmd = req->__cmd;
req->cmd_len = BLK_MAX_CDB;

13
drivers/block/cciss.c
View File

@ -3394,7 +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 */
@ -3424,13 +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) {
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;
} else {
break;
default:
dev_warn(&h->pdev->dev, "bad request type %d\n",
creq->cmd_type);
creq->cmd_flags);
BUG();
}

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;
}

19
drivers/block/nbd.c
View File

@ -271,17 +271,22 @@ 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->cmd_type != REQ_TYPE_FS)
return -EIO;
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)) {

4
drivers/block/null_blk.c
View File

@ -431,11 +431,11 @@ 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:

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);

2
drivers/block/pktcdvd.c
View File

@ -704,7 +704,7 @@ 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);
scsi_req_init(rq);

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;
}
}
}

22
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) {

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);

61
drivers/block/virtio_blk.c
View File

@ -175,11 +175,12 @@ static inline void virtblk_request_done(struct request *req)
struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
int error = virtblk_result(vbr);
switch (req->cmd_type) {
case REQ_TYPE_BLOCK_PC:
switch (req_op(req)) {
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
virtblk_scsi_reques_done(req);
break;
case REQ_TYPE_DRV_PRIV:
case REQ_OP_DRV_IN:
req->errors = (error != 0);
break;
}
@ -226,36 +227,35 @@ 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);
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(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(req));
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(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(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(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, req, vbr->sg);
@ -267,7 +267,7 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
}
spin_lock_irqsave(&vblk->vqs[qid].lock, flags);
if (req->cmd_type == REQ_TYPE_BLOCK_PC)
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);
@ -300,10 +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)

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/cdrom/cdrom.c
View File

@ -2191,7 +2191,7 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
len = nr * CD_FRAMESIZE_RAW;
rq = blk_get_request(q, READ, GFP_KERNEL);
rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
break;

29
drivers/cdrom/gdrom.c
View File

@ -659,23 +659,24 @@ static void gdrom_request(struct request_queue *rq)
struct request *req;
while ((req = blk_fetch_request(rq)) != NULL) {
if (req->cmd_type != REQ_TYPE_FS) {
printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
__blk_end_request_all(req, -EIO);
continue;
}
if (rq_data_dir(req) != READ) {
switch (req_op(req)) {
case REQ_OP_READ:
/*
* Add to list of deferred work and then schedule
* workqueue.
*/
list_add_tail(&req->queuelist, &gdrom_deferred);
schedule_work(&work);
break;
case REQ_OP_WRITE:
pr_notice("Read only device - write request ignored\n");
__blk_end_request_all(req, -EIO);
continue;
break;
default:
printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
__blk_end_request_all(req, -EIO);
break;
}
/*
* Add to list of deferred work and then schedule
* workqueue.
*/
list_add_tail(&req->queuelist, &gdrom_deferred);
schedule_work(&work);
}
}

21
drivers/ide/ide-atapi.c
View File

@ -92,9 +92,8 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
struct request *rq;
int error;
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = (char *)pc;
@ -212,7 +211,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
}
sense_rq->rq_disk = rq->rq_disk;
sense_rq->cmd_type = REQ_TYPE_DRV_PRIV;
sense_rq->cmd_flags = REQ_OP_DRV_IN;
ide_req(sense_rq)->type = ATA_PRIV_SENSE;
sense_rq->rq_flags |= RQF_PREEMPT;
@ -312,19 +311,21 @@ EXPORT_SYMBOL_GPL(ide_cd_expiry);
int ide_cd_get_xferlen(struct request *rq)
{
switch (rq->cmd_type) {
case REQ_TYPE_FS:
switch (req_op(rq)) {
default:
return 32768;
case REQ_TYPE_BLOCK_PC:
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
return blk_rq_bytes(rq);
case REQ_TYPE_DRV_PRIV:
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
switch (ide_req(rq)->type) {
case ATA_PRIV_PC:
case ATA_PRIV_SENSE:
return blk_rq_bytes(rq);
default:
return 0;
}
default:
return 0;
}
}
EXPORT_SYMBOL_GPL(ide_cd_get_xferlen);
@ -491,7 +492,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
error = 0;
} else {
if (rq->cmd_type != REQ_TYPE_FS && uptodate <= 0) {
if (blk_rq_is_passthrough(rq) && uptodate <= 0) {
if (rq->errors == 0)
rq->errors = -EIO;
}

76
drivers/ide/ide-cd.c
View File

@ -176,7 +176,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
if (!sense->valid)
break;
if (failed_command == NULL ||
failed_command->cmd_type != REQ_TYPE_FS)
blk_rq_is_passthrough(failed_command))
break;
sector = (sense->information[0] << 24) |
(sense->information[1] << 16) |
@ -293,7 +293,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
}
/* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
if (rq->cmd_type == REQ_TYPE_BLOCK_PC && !rq->errors)
if (blk_rq_is_scsi(rq) && !rq->errors)
rq->errors = SAM_STAT_CHECK_CONDITION;
if (blk_noretry_request(rq))
@ -301,13 +301,13 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
switch (sense_key) {
case NOT_READY:
if (rq->cmd_type == REQ_TYPE_FS && rq_data_dir(rq) == WRITE) {
if (req_op(rq) == REQ_OP_WRITE) {
if (ide_cd_breathe(drive, rq))
return 1;
} else {
cdrom_saw_media_change(drive);
if (rq->cmd_type == REQ_TYPE_FS &&
if (!blk_rq_is_passthrough(rq) &&
!(rq->rq_flags & RQF_QUIET))
printk(KERN_ERR PFX "%s: tray open\n",
drive->name);
@ -317,7 +317,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
case UNIT_ATTENTION:
cdrom_saw_media_change(drive);
if (rq->cmd_type != REQ_TYPE_FS)
if (blk_rq_is_passthrough(rq))
return 0;
/*
@ -365,7 +365,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
do_end_request = 1;
break;
default:
if (rq->cmd_type != REQ_TYPE_FS)
if (blk_rq_is_passthrough(rq))
break;
if (err & ~ATA_ABORTED) {
/* go to the default handler for other errors */
@ -376,7 +376,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
do_end_request = 1;
}
if (rq->cmd_type != REQ_TYPE_FS) {
if (blk_rq_is_passthrough(rq)) {
rq->rq_flags |= RQF_FAILED;
do_end_request = 1;
}
@ -435,10 +435,10 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
int error;
bool delay = false;
rq = blk_get_request(drive->queue, write, __GFP_RECLAIM);
rq = blk_get_request(drive->queue,
write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_PC;
rq->rq_flags |= rq_flags;
rq->timeout = timeout;
@ -564,7 +564,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
ide_read_bcount_and_ireason(drive, &len, &ireason);
thislen = (rq->cmd_type == REQ_TYPE_FS) ? len : cmd->nleft;
thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
if (thislen > len)
thislen = len;
@ -573,7 +573,8 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
/* If DRQ is clear, the command has completed. */
if ((stat & ATA_DRQ) == 0) {
if (rq->cmd_type == REQ_TYPE_FS) {
switch (req_op(rq)) {
default:
/*
* If we're not done reading/writing, complain.
* Otherwise, complete the command normally.
@ -587,7 +588,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
rq->rq_flags |= RQF_FAILED;
uptodate = 0;
}
} else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
goto out_end;
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
ide_cd_request_sense_fixup(drive, cmd);
uptodate = cmd->nleft ? 0 : 1;
@ -603,8 +606,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
if (!uptodate)
rq->rq_flags |= RQF_FAILED;
goto out_end;
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
goto out_end;
}
goto out_end;
}
rc = ide_check_ireason(drive, rq, len, ireason, write);
@ -636,7 +642,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
/* pad, if necessary */
if (len > 0) {
if (rq->cmd_type != REQ_TYPE_FS || write == 0)
if (blk_rq_is_passthrough(rq) || write == 0)
ide_pad_transfer(drive, write, len);
else {
printk(KERN_ERR PFX "%s: confused, missing data\n",
@ -645,12 +651,18 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
}
}
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
switch (req_op(rq)) {
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
timeout = rq->timeout;
} else {
break;
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
expiry = ide_cd_expiry;
/*FALLTHRU*/
default:
timeout = ATAPI_WAIT_PC;
if (rq->cmd_type != REQ_TYPE_FS)
expiry = ide_cd_expiry;
break;
}
hwif->expiry = expiry;
@ -658,7 +670,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
return ide_started;
out_end:
if (rq->cmd_type == REQ_TYPE_BLOCK_PC && rc == 0) {
if (blk_rq_is_scsi(rq) && rc == 0) {
scsi_req(rq)->resid_len = 0;
blk_end_request_all(rq, 0);
hwif->rq = NULL;
@ -666,7 +678,7 @@ out_end:
if (sense && uptodate)
ide_cd_complete_failed_rq(drive, rq);
if (rq->cmd_type == REQ_TYPE_FS) {
if (!blk_rq_is_passthrough(rq)) {
if (cmd->nleft == 0)
uptodate = 1;
} else {
@ -679,7 +691,7 @@ out_end:
return ide_stopped;
/* make sure it's fully ended */
if (rq->cmd_type != REQ_TYPE_FS) {
if (blk_rq_is_passthrough(rq)) {
scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
scsi_req(rq)->resid_len += cmd->last_xfer_len;
@ -739,7 +751,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
rq->cmd[0], rq->cmd_type);
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
if (blk_rq_is_scsi(rq))
rq->rq_flags |= RQF_QUIET;
else
rq->rq_flags &= ~RQF_FAILED;
@ -781,18 +793,20 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
if (drive->debug_mask & IDE_DBG_RQ)
blk_dump_rq_flags(rq, "ide_cd_do_request");
switch (rq->cmd_type) {
case REQ_TYPE_FS:
switch (req_op(rq)) {
default:
if (cdrom_start_rw(drive, rq) == ide_stopped)
goto out_end;
break;
case REQ_TYPE_BLOCK_PC:
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
handle_pc:
if (!rq->timeout)
rq->timeout = ATAPI_WAIT_PC;
cdrom_do_block_pc(drive, rq);
break;
case REQ_TYPE_DRV_PRIV:
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
switch (ide_req(rq)->type) {
case ATA_PRIV_MISC:
/* right now this can only be a reset... */
@ -801,9 +815,9 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
case ATA_PRIV_SENSE:
case ATA_PRIV_PC:
goto handle_pc;
default:
BUG();
}
default:
BUG();
}
/* prepare sense request for this command */
@ -816,7 +830,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
cmd.rq = rq;
if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
@ -1373,9 +1387,9 @@ static int ide_cdrom_prep_pc(struct request *rq)
static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
{
if (rq->cmd_type == REQ_TYPE_FS)
if (!blk_rq_is_passthrough(rq))
return ide_cdrom_prep_fs(q, rq);
else if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
else if (blk_rq_is_scsi(rq))
return ide_cdrom_prep_pc(rq);
return 0;

3
drivers/ide/ide-cd_ioctl.c
View File

@ -303,9 +303,8 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
struct request *rq;
int ret;
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
rq->rq_flags = RQF_QUIET;
ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);

3
drivers/ide/ide-devsets.c
View File

@ -165,9 +165,8 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
if (!(setting->flags & DS_SYNC))
return setting->set(drive, arg);
rq = blk_get_request(q, READ, __GFP_RECLAIM);
rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd_len = 5;
scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;

9
drivers/ide/ide-disk.c
View File

@ -184,7 +184,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
ide_hwif_t *hwif = drive->hwif;
BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
BUG_ON(rq->cmd_type != REQ_TYPE_FS);
BUG_ON(blk_rq_is_passthrough(rq));
ledtrig_disk_activity();
@ -452,8 +452,8 @@ static int idedisk_prep_fn(struct request_queue *q, struct request *rq)
cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
cmd->tf_flags = IDE_TFLAG_DYN;
cmd->protocol = ATA_PROT_NODATA;
rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->cmd_flags &= ~REQ_OP_MASK;
rq->cmd_flags |= REQ_OP_DRV_OUT;
ide_req(rq)->type = ATA_PRIV_TASKFILE;
rq->special = cmd;
cmd->rq = rq;
@ -478,9 +478,8 @@ static int set_multcount(ide_drive_t *drive, int arg)
if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
return -EBUSY;
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_TASKFILE;
drive->mult_req = arg;

2
drivers/ide/ide-eh.c
View File

@ -123,7 +123,7 @@ ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat)
return ide_stopped;
/* retry only "normal" I/O: */
if (rq->cmd_type != REQ_TYPE_FS) {
if (blk_rq_is_passthrough(rq)) {
if (ata_taskfile_request(rq)) {
struct ide_cmd *cmd = rq->special;

19
drivers/ide/ide-floppy.c
View File

@ -72,7 +72,7 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
drive->failed_pc = NULL;
if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
rq->cmd_type == REQ_TYPE_BLOCK_PC)
(req_op(rq) == REQ_OP_SCSI_IN || req_op(rq) == REQ_OP_SCSI_OUT))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
@ -254,8 +254,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
goto out_end;
}
switch (rq->cmd_type) {
case REQ_TYPE_FS:
switch (req_op(rq)) {
default:
if (((long)blk_rq_pos(rq) % floppy->bs_factor) ||
(blk_rq_sectors(rq) % floppy->bs_factor)) {
printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
@ -265,11 +265,13 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
pc = &floppy->queued_pc;
idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
break;
case REQ_TYPE_BLOCK_PC:
case REQ_OP_SCSI_IN:
case REQ_OP_SCSI_OUT:
pc = &floppy->queued_pc;
idefloppy_blockpc_cmd(floppy, pc, rq);
break;
case REQ_TYPE_DRV_PRIV:
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
switch (ide_req(rq)->type) {
case ATA_PRIV_MISC:
case ATA_PRIV_SENSE:
@ -278,9 +280,6 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
default:
BUG();
}
break;
default:
BUG();
}
ide_prep_sense(drive, rq);
@ -292,7 +291,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
cmd.rq = rq;
if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
@ -302,7 +301,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
return ide_floppy_issue_pc(drive, &cmd, pc);
out_end:
drive->failed_pc = NULL;
if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
if (blk_rq_is_passthrough(rq) && rq->errors == 0)
rq->errors = -EIO;
ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
return ide_stopped;

2
drivers/ide/ide-io.c
View File

@ -145,7 +145,7 @@ void ide_kill_rq(ide_drive_t *drive, struct request *rq)
} else {
if (media == ide_tape)
rq->errors = IDE_DRV_ERROR_GENERAL;
else if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
else if (blk_rq_is_passthrough(rq) && rq->errors == 0)
rq->errors = -EIO;
}

6
drivers/ide/ide-ioctls.c
View File

@ -125,9 +125,8 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
if (NULL == (void *) arg) {
struct request *rq;
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_TASKFILE;
err = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
@ -223,9 +222,8 @@ static int generic_drive_reset(ide_drive_t *drive)
struct request *rq;
int ret = 0;
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd_len = 1;
scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;

6
drivers/ide/ide-park.c
View File

@ -31,11 +31,10 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
}
spin_unlock_irq(&hwif->lock);
rq = blk_get_request(q, READ, __GFP_RECLAIM);
rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
scsi_req(rq)->cmd_len = 1;
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = &timeout;
rc = blk_execute_rq(q, NULL, rq, 1);
@ -47,14 +46,13 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
* Make sure that *some* command is sent to the drive after the
* timeout has expired, so power management will be reenabled.
*/
rq = blk_get_request(q, READ, GFP_NOWAIT);
rq = blk_get_request(q, REQ_OP_DRV_IN, GFP_NOWAIT);
scsi_req_init(rq);
if (IS_ERR(rq))
goto out;
scsi_req(rq)->cmd[0] = REQ_UNPARK_HEADS;
scsi_req(rq)->cmd_len = 1;
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);

10
drivers/ide/ide-pm.c
View File

@ -18,9 +18,8 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
}
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
@ -90,9 +89,8 @@ int generic_ide_resume(struct device *dev)
}
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_PM_RESUME;
rq->rq_flags |= RQF_PREEMPT;
rq->special = &rqpm;
@ -244,12 +242,12 @@ void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct ide_pm_state *pm = rq->special;
if (rq->cmd_type == REQ_TYPE_DRV_PRIV &&
if (blk_rq_is_private(rq) &&
ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&
pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
else if (rq->cmd_type == REQ_TYPE_DRV_PRIV &&
else if (blk_rq_is_private(rq) &&
ide_req(rq)->type == ATA_PRIV_PM_RESUME &&
pm->pm_step == IDE_PM_START_RESUME) {
/*

5
drivers/ide/ide-tape.c
View File

@ -577,7 +577,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
req->cmd[0], (unsigned long long)blk_rq_pos(rq),
blk_rq_sectors(rq));
BUG_ON(rq->cmd_type != REQ_TYPE_DRV_PRIV);
BUG_ON(!blk_rq_is_private(rq));
BUG_ON(ide_req(rq)->type != ATA_PRIV_MISC &&
ide_req(rq)->type != ATA_PRIV_SENSE);
@ -854,9 +854,8 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE);
BUG_ON(size < 0 || size % tape->blk_size);
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd[13] = cmd;
rq->rq_disk = tape->disk;

6
drivers/ide/ide-taskfile.c
View File

@ -428,11 +428,11 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
{
struct request *rq;
int error;
int rw = !(cmd->tf_flags & IDE_TFLAG_WRITE) ? READ : WRITE;
rq = blk_get_request(drive->queue, rw, __GFP_RECLAIM);
rq = blk_get_request(drive->queue,
(cmd->tf_flags & IDE_TFLAG_WRITE) ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
ide_req(rq)->type = ATA_PRIV_TASKFILE;
/*

13
drivers/mtd/mtd_blkdevs.c
View File

@ -84,9 +84,6 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
nsect = blk_rq_cur_bytes(req) >> tr->blkshift;
buf = bio_data(req->bio);
if (req->cmd_type != REQ_TYPE_FS)
return -EIO;
if (req_op(req) == REQ_OP_FLUSH)
return tr->flush(dev);
@ -94,16 +91,16 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
get_capacity(req->rq_disk))
return -EIO;
if (req_op(req) == REQ_OP_DISCARD)
switch (req_op(req)) {
case REQ_OP_DISCARD:
return tr->discard(dev, block, nsect);
if (rq_data_dir(req) == READ) {
case REQ_OP_READ:
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->readsect(dev, block, buf))
return -EIO;
rq_flush_dcache_pages(req);
return 0;
} else {
case REQ_OP_WRITE:
if (!tr->writesect)
return -EIO;
@ -112,6 +109,8 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (tr->writesect(dev, block, buf))
return -EIO;
return 0;
default:
return -EIO;
}
}

15
drivers/mtd/ubi/block.c
View File

@ -323,16 +323,15 @@ static int ubiblock_queue_rq(struct blk_mq_hw_ctx *hctx,
struct ubiblock *dev = hctx->queue->queuedata;
struct ubiblock_pdu *pdu = blk_mq_rq_to_pdu(req);
if (req->cmd_type != REQ_TYPE_FS)
switch (req_op(req)) {
case REQ_OP_READ:
ubi_sgl_init(&pdu->usgl);
queue_work(dev->wq, &pdu->work);
return BLK_MQ_RQ_QUEUE_OK;
default:
return BLK_MQ_RQ_QUEUE_ERROR;
}
if (rq_data_dir(req) != READ)
return BLK_MQ_RQ_QUEUE_ERROR; /* Write not implemented */
ubi_sgl_init(&pdu->usgl);
queue_work(dev->wq, &pdu->work);
return BLK_MQ_RQ_QUEUE_OK;
}
static int ubiblock_init_request(void *data, struct request *req,

26
drivers/nvme/host/core.c
View File

@ -208,18 +208,18 @@ EXPORT_SYMBOL_GPL(nvme_requeue_req);
struct request *nvme_alloc_request(struct request_queue *q,
struct nvme_command *cmd, unsigned int flags, int qid)
{
unsigned op = nvme_is_write(cmd) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN;
struct request *req;
if (qid == NVME_QID_ANY) {
req = blk_mq_alloc_request(q, nvme_is_write(cmd), flags);
req = blk_mq_alloc_request(q, op, flags);
} else {
req = blk_mq_alloc_request_hctx(q, nvme_is_write(cmd), flags,
req = blk_mq_alloc_request_hctx(q, op, flags,
qid ? qid - 1 : 0);
}
if (IS_ERR(req))
return req;
req->cmd_type = REQ_TYPE_DRV_PRIV;
req->cmd_flags |= REQ_FAILFAST_DRIVER;
nvme_req(req)->cmd = cmd;
@ -309,17 +309,27 @@ int nvme_setup_cmd(struct nvme_ns *ns, struct request *req,
{
int ret = BLK_MQ_RQ_QUEUE_OK;
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
switch (req_op(req)) {
case REQ_OP_DRV_IN:
case REQ_OP_DRV_OUT:
memcpy(cmd, nvme_req(req)->cmd, sizeof(*cmd));
else if (req_op(req) == REQ_OP_FLUSH)
break;
case REQ_OP_FLUSH:
nvme_setup_flush(ns, cmd);
else if (req_op(req) == REQ_OP_DISCARD)
break;
case REQ_OP_DISCARD:
ret = nvme_setup_discard(ns, req, cmd);
else
break;
case REQ_OP_READ:
case REQ_OP_WRITE:
nvme_setup_rw(ns, req, cmd);
break;
default:
WARN_ON_ONCE(1);
return BLK_MQ_RQ_QUEUE_ERROR;
}
cmd->common.command_id = req->tag;
return ret;
}
EXPORT_SYMBOL_GPL(nvme_setup_cmd);

2
drivers/nvme/host/rdma.c
View File

@ -1471,7 +1471,7 @@ static int nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
ib_dma_sync_single_for_device(dev, sqe->dma,
sizeof(struct nvme_command), DMA_TO_DEVICE);
if (rq->cmd_type == REQ_TYPE_FS && req_op(rq) == REQ_OP_FLUSH)
if (req_op(rq) == REQ_OP_FLUSH)
flush = true;
ret = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge,
req->mr->need_inval ? &req->reg_wr.wr : NULL, flush);

3
drivers/scsi/osd/osd_initiator.c
View File

@ -1565,7 +1565,8 @@ static struct request *_make_request(struct request_queue *q, bool has_write,
struct bio *bio = oii->bio;
int ret;
req = blk_get_request(q, has_write ? WRITE : READ, flags);
req = blk_get_request(q, has_write ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
flags);
if (IS_ERR(req))
return req;
scsi_req_init(req);

3
drivers/scsi/osst.c
View File

@ -367,7 +367,8 @@ static int osst_execute(struct osst_request *SRpnt, const unsigned char *cmd,
int err = 0;
int write = (data_direction == DMA_TO_DEVICE);
req = blk_get_request(SRpnt->stp->device->request_queue, write, GFP_KERNEL);
req = blk_get_request(SRpnt->stp->device->request_queue,
write ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return DRIVER_ERROR << 24;

2
drivers/scsi/scsi_error.c
View File

@ -1974,7 +1974,7 @@ static void scsi_eh_lock_door(struct scsi_device *sdev)
* blk_get_request with GFP_KERNEL (__GFP_RECLAIM) sleeps until a
* request becomes available
*/
req = blk_get_request(sdev->request_queue, READ, GFP_KERNEL);
req = blk_get_request(sdev->request_queue, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return;
rq = scsi_req(req);

30
drivers/scsi/scsi_lib.c
View File

@ -219,11 +219,12 @@ static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
req_flags_t rq_flags, int *resid)
{
struct request *req;
int write = (data_direction == DMA_TO_DEVICE);
struct scsi_request *rq;
int ret = DRIVER_ERROR << 24;
req = blk_get_request(sdev->request_queue, write, __GFP_RECLAIM);
req = blk_get_request(sdev->request_queue,
data_direction == DMA_TO_DEVICE ?
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, __GFP_RECLAIM);
if (IS_ERR(req))
return ret;
rq = scsi_req(req);
@ -839,8 +840,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
}
} else if (blk_rq_bytes(req) == 0 && result && !sense_deferred) {
/*
* Certain non BLOCK_PC requests are commands that don't
* actually transfer anything (FLUSH), so cannot use
* Flush commands do not transfers any data, and thus cannot use
* good_bytes != blk_rq_bytes(req) as the signal for an error.
* This sets the error explicitly for the problem case.
*/
@ -859,8 +859,8 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
blk_rq_sectors(req), good_bytes));
/*
* Recovered errors need reporting, but they're always treated
* as success, so fiddle the result code here. For BLOCK_PC
* Recovered errors need reporting, but they're always treated as
* success, so fiddle the result code here. For passthrough requests
* we already took a copy of the original into rq->errors which
* is what gets returned to the user
*/
@ -874,7 +874,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
else if (!(req->rq_flags & RQF_QUIET))
scsi_print_sense(cmd);
result = 0;
/* BLOCK_PC may have set error */
/* for passthrough error may be set */
error = 0;
}
@ -1179,12 +1179,12 @@ void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd)
spin_unlock_irqrestore(&dev->list_lock, flags);
}
static int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
static int scsi_setup_scsi_cmnd(struct scsi_device *sdev, struct request *req)
{
struct scsi_cmnd *cmd = req->special;
/*
* BLOCK_PC requests may transfer data, in which case they must
* Passthrough requests may transfer data, in which case they must
* a bio attached to them. Or they might contain a SCSI command
* that does not transfer data, in which case they may optionally
* submit a request without an attached bio.
@ -1207,7 +1207,7 @@ static int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
}
/*
* Setup a REQ_TYPE_FS command. These are simple request from filesystems
* Setup a normal block command. These are simple request from filesystems
* that still need to be translated to SCSI CDBs from the ULD.
*/
static int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req)
@ -1236,14 +1236,10 @@ static int scsi_setup_cmnd(struct scsi_device *sdev, struct request *req)
else
cmd->sc_data_direction = DMA_FROM_DEVICE;
switch (req->cmd_type) {
case REQ_TYPE_FS:
if (blk_rq_is_scsi(req))
return scsi_setup_scsi_cmnd(sdev, req);
else
return scsi_setup_fs_cmnd(sdev, req);
case REQ_TYPE_BLOCK_PC:
return scsi_setup_blk_pc_cmnd(sdev, req);
default:
return BLKPREP_KILL;
}
}
static int

3
drivers/scsi/sg.c
View File

@ -1698,7 +1698,8 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
* With scsi-mq disabled, blk_get_request() with GFP_KERNEL usually
* does not sleep except under memory pressure.
*/
rq = blk_get_request(q, rw, GFP_KERNEL);
rq = blk_get_request(q, hp->dxfer_direction == SG_DXFER_TO_DEV ?
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
kfree(long_cmdp);
return PTR_ERR(rq);

9
drivers/scsi/sr.c
View File

@ -437,14 +437,17 @@ static int sr_init_command(struct scsi_cmnd *SCpnt)
goto out;
}
if (rq_data_dir(rq) == WRITE) {
switch (req_op(rq)) {
case REQ_OP_WRITE:
if (!cd->writeable)
goto out;
SCpnt->cmnd[0] = WRITE_10;
cd->cdi.media_written = 1;
} else if (rq_data_dir(rq) == READ) {
break;
case REQ_OP_READ:
SCpnt->cmnd[0] = READ_10;
} else {
break;
default:
blk_dump_rq_flags(rq, "Unknown sr command");
goto out;
}

6
drivers/scsi/st.c
View File

@ -541,11 +541,11 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
struct scsi_request *rq;
struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data;
int err = 0;
int write = (data_direction == DMA_TO_DEVICE);
struct scsi_tape *STp = SRpnt->stp;
req = blk_get_request(SRpnt->stp->device->request_queue, write,
GFP_KERNEL);
req = blk_get_request(SRpnt->stp->device->request_queue,
data_direction == DMA_TO_DEVICE ?
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return DRIVER_ERROR << 24;
rq = scsi_req(req);

3
drivers/target/target_core_pscsi.c
View File

@ -1005,7 +1005,8 @@ pscsi_execute_cmd(struct se_cmd *cmd)
scsi_command_size(cmd->t_task_cdb));
req = blk_get_request(pdv->pdv_sd->request_queue,
(cmd->data_direction == DMA_TO_DEVICE),
cmd->data_direction == DMA_TO_DEVICE ?
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
GFP_KERNEL);
if (IS_ERR(req)) {
pr_err("PSCSI: blk_get_request() failed\n");

2
fs/nfsd/blocklayout.c
View File

@ -223,7 +223,7 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev,
if (!buf)
return -ENOMEM;
rq = blk_get_request(q, READ, GFP_KERNEL);
rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
error = -ENOMEM;
goto out_free_buf;

7
include/linux/blk_types.h
View File

@ -162,6 +162,13 @@ enum req_opf {
/* write the zero filled sector many times */
REQ_OP_WRITE_ZEROES = 8,
/* SCSI passthrough using struct scsi_request */
REQ_OP_SCSI_IN = 32,
REQ_OP_SCSI_OUT = 33,
/* Driver private requests */
REQ_OP_DRV_IN = 34,
REQ_OP_DRV_OUT = 35,
REQ_OP_LAST,
};

22
include/linux/blkdev.h
View File

@ -70,15 +70,6 @@ struct request_list {
unsigned int flags;
};
/*
* request command types
*/
enum rq_cmd_type_bits {
REQ_TYPE_FS = 1, /* fs request */
REQ_TYPE_BLOCK_PC, /* scsi command */
REQ_TYPE_DRV_PRIV, /* driver defined types from here */
};
/*
* request flags */
typedef __u32 __bitwise req_flags_t;
@ -145,7 +136,6 @@ struct request {
struct blk_mq_ctx *mq_ctx;
int cpu;
unsigned cmd_type;
unsigned int cmd_flags; /* op and common flags */
req_flags_t rq_flags;
unsigned long atomic_flags;
@ -242,9 +232,19 @@ struct request {
struct request *next_rq;
};
static inline bool blk_rq_is_scsi(struct request *rq)
{
return req_op(rq) == REQ_OP_SCSI_IN || req_op(rq) == REQ_OP_SCSI_OUT;
}
static inline bool blk_rq_is_private(struct request *rq)
{
return req_op(rq) == REQ_OP_DRV_IN || req_op(rq) == REQ_OP_DRV_OUT;
}
static inline bool blk_rq_is_passthrough(struct request *rq)
{
return rq->cmd_type != REQ_TYPE_FS;
return blk_rq_is_scsi(rq) || blk_rq_is_private(rq);
}
static inline unsigned short req_get_ioprio(struct request *req)

14
include/linux/ide.h
View File

@ -63,31 +63,27 @@ static inline struct ide_request *ide_req(struct request *rq)
static inline bool ata_misc_request(struct request *rq)
{
return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
ide_req(rq)->type == ATA_PRIV_MISC;
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_MISC;
}
static inline bool ata_taskfile_request(struct request *rq)
{
return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
ide_req(rq)->type == ATA_PRIV_TASKFILE;
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_TASKFILE;
}
static inline bool ata_pc_request(struct request *rq)
{
return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
ide_req(rq)->type == ATA_PRIV_PC;
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_PC;
}
static inline bool ata_sense_request(struct request *rq)
{
return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
ide_req(rq)->type == ATA_PRIV_SENSE;
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_SENSE;
}
static inline bool ata_pm_request(struct request *rq)
{
return rq->cmd_type == REQ_TYPE_DRV_PRIV &&
return blk_rq_is_private(rq) &&
(ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
ide_req(rq)->type == ATA_PRIV_PM_RESUME);
}