arq->state = AS_RQ_NEW;
if (rq_data_dir(arq->request) == READ
- || (arq->request->flags & REQ_RW_SYNC))
+ || (arq->request->cmd_flags & REQ_RW_SYNC))
arq->is_sync = 1;
else
arq->is_sync = 0;
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
- if (pos->flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
+ if (pos->cmd_flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
break;
if (rq->sector >= boundary) {
if (pos->sector < boundary)
e->ops->elevator_deactivate_req_fn(q, rq);
}
- rq->flags &= ~REQ_STARTED;
+ rq->cmd_flags &= ~REQ_STARTED;
elv_insert(q, rq, ELEVATOR_INSERT_REQUEUE);
}
switch (where) {
case ELEVATOR_INSERT_FRONT:
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
list_add(&rq->queuelist, &q->queue_head);
break;
case ELEVATOR_INSERT_BACK:
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
elv_drain_elevator(q);
list_add_tail(&rq->queuelist, &q->queue_head);
/*
case ELEVATOR_INSERT_SORT:
BUG_ON(!blk_fs_request(rq));
- rq->flags |= REQ_SORTED;
+ rq->cmd_flags |= REQ_SORTED;
q->nr_sorted++;
if (q->last_merge == NULL && rq_mergeable(rq))
q->last_merge = rq;
* insertion; otherwise, requests should be requeued
* in ordseq order.
*/
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
if (q->ordseq == 0) {
list_add(&rq->queuelist, &q->queue_head);
int plug)
{
if (q->ordcolor)
- rq->flags |= REQ_ORDERED_COLOR;
+ rq->cmd_flags |= REQ_ORDERED_COLOR;
- if (rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
+ if (rq->cmd_flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
/*
* toggle ordered color
*/
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
}
- } else if (!(rq->flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
+ } else if (!(rq->cmd_flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
where = ELEVATOR_INSERT_BACK;
if (plug)
int ret;
while ((rq = __elv_next_request(q)) != NULL) {
- if (!(rq->flags & REQ_STARTED)) {
+ if (!(rq->cmd_flags & REQ_STARTED)) {
elevator_t *e = q->elevator;
/*
* it, a request that has been delayed should
* not be passed by new incoming requests
*/
- rq->flags |= REQ_STARTED;
+ rq->cmd_flags |= REQ_STARTED;
blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
}
q->boundary_rq = NULL;
}
- if ((rq->flags & REQ_DONTPREP) || !q->prep_rq_fn)
+ if ((rq->cmd_flags & REQ_DONTPREP) || !q->prep_rq_fn)
break;
ret = q->prep_rq_fn(q, rq);
nr_bytes = rq->data_len;
blkdev_dequeue_request(rq);
- rq->flags |= REQ_QUIET;
+ rq->cmd_flags |= REQ_QUIET;
end_that_request_chunk(rq, 0, nr_bytes);
end_that_request_last(rq, 0);
} else {
if (rq == &q->post_flush_rq)
return QUEUE_ORDSEQ_POSTFLUSH;
- if ((rq->flags & REQ_ORDERED_COLOR) ==
- (q->orig_bar_rq->flags & REQ_ORDERED_COLOR))
+ if ((rq->cmd_flags & REQ_ORDERED_COLOR) ==
+ (q->orig_bar_rq->cmd_flags & REQ_ORDERED_COLOR))
return QUEUE_ORDSEQ_DRAIN;
else
return QUEUE_ORDSEQ_DONE;
end_io = post_flush_end_io;
}
+ rq->cmd_flags = REQ_HARDBARRIER;
rq_init(q, rq);
- rq->flags = REQ_HARDBARRIER;
rq->elevator_private = NULL;
rq->rq_disk = q->bar_rq.rq_disk;
rq->rl = NULL;
blkdev_dequeue_request(rq);
q->orig_bar_rq = rq;
rq = &q->bar_rq;
+ rq->cmd_flags = 0;
rq_init(q, rq);
- rq->flags = bio_data_dir(q->orig_bar_rq->bio);
- rq->flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
+ if (bio_data_dir(q->orig_bar_rq->bio) == WRITE)
+ rq->cmd_flags |= REQ_RW;
+ rq->cmd_flags |= q->ordered & QUEUE_ORDERED_FUA ? REQ_FUA : 0;
rq->elevator_private = NULL;
rq->rl = NULL;
init_request_from_bio(rq, q->orig_bar_rq->bio);
}
list_del_init(&rq->queuelist);
- rq->flags &= ~REQ_QUEUED;
+ rq->cmd_flags &= ~REQ_QUEUED;
rq->tag = -1;
if (unlikely(bqt->tag_index[tag] == NULL))
struct blk_queue_tag *bqt = q->queue_tags;
int tag;
- if (unlikely((rq->flags & REQ_QUEUED))) {
+ if (unlikely((rq->cmd_flags & REQ_QUEUED))) {
printk(KERN_ERR
"%s: request %p for device [%s] already tagged %d",
__FUNCTION__, rq,
__set_bit(tag, bqt->tag_map);
- rq->flags |= REQ_QUEUED;
+ rq->cmd_flags |= REQ_QUEUED;
rq->tag = tag;
bqt->tag_index[tag] = rq;
blkdev_dequeue_request(rq);
printk(KERN_ERR
"%s: bad tag found on list\n", __FUNCTION__);
list_del_init(&rq->queuelist);
- rq->flags &= ~REQ_QUEUED;
+ rq->cmd_flags &= ~REQ_QUEUED;
} else
blk_queue_end_tag(q, rq);
- rq->flags &= ~REQ_STARTED;
+ rq->cmd_flags &= ~REQ_STARTED;
__elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 0);
}
}
EXPORT_SYMBOL(blk_queue_invalidate_tags);
-static const char * const rq_flags[] = {
- "REQ_RW",
- "REQ_FAILFAST",
- "REQ_SORTED",
- "REQ_SOFTBARRIER",
- "REQ_HARDBARRIER",
- "REQ_FUA",
- "REQ_CMD",
- "REQ_NOMERGE",
- "REQ_STARTED",
- "REQ_DONTPREP",
- "REQ_QUEUED",
- "REQ_ELVPRIV",
- "REQ_PC",
- "REQ_BLOCK_PC",
- "REQ_SENSE",
- "REQ_FAILED",
- "REQ_QUIET",
- "REQ_SPECIAL",
- "REQ_DRIVE_CMD",
- "REQ_DRIVE_TASK",
- "REQ_DRIVE_TASKFILE",
- "REQ_PREEMPT",
- "REQ_PM_SUSPEND",
- "REQ_PM_RESUME",
- "REQ_PM_SHUTDOWN",
- "REQ_ORDERED_COLOR",
-};
-
void blk_dump_rq_flags(struct request *rq, char *msg)
{
int bit;
- printk("%s: dev %s: flags = ", msg,
- rq->rq_disk ? rq->rq_disk->disk_name : "?");
- bit = 0;
- do {
- if (rq->flags & (1 << bit))
- printk("%s ", rq_flags[bit]);
- bit++;
- } while (bit < __REQ_NR_BITS);
+ printk("%s: dev %s: type=%x, flags=%x\n", msg,
+ rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->cmd_type,
+ rq->cmd_flags);
printk("\nsector %llu, nr/cnr %lu/%u\n", (unsigned long long)rq->sector,
rq->nr_sectors,
rq->current_nr_sectors);
printk("bio %p, biotail %p, buffer %p, data %p, len %u\n", rq->bio, rq->biotail, rq->buffer, rq->data, rq->data_len);
- if (rq->flags & (REQ_BLOCK_PC | REQ_PC)) {
+ if (blk_pc_request(rq)) {
printk("cdb: ");
for (bit = 0; bit < sizeof(rq->cmd); bit++)
printk("%02x ", rq->cmd[bit]);
int nr_phys_segs = bio_phys_segments(q, bio);
if (req->nr_phys_segments + nr_phys_segs > q->max_phys_segments) {
- req->flags |= REQ_NOMERGE;
+ req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
if (req->nr_hw_segments + nr_hw_segs > q->max_hw_segments
|| req->nr_phys_segments + nr_phys_segs > q->max_phys_segments) {
- req->flags |= REQ_NOMERGE;
+ req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
max_sectors = q->max_sectors;
if (req->nr_sectors + bio_sectors(bio) > max_sectors) {
- req->flags |= REQ_NOMERGE;
+ req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
if (req->nr_sectors + bio_sectors(bio) > max_sectors) {
- req->flags |= REQ_NOMERGE;
+ req->cmd_flags |= REQ_NOMERGE;
if (req == q->last_merge)
q->last_merge = NULL;
return 0;
static inline void blk_free_request(request_queue_t *q, struct request *rq)
{
- if (rq->flags & REQ_ELVPRIV)
+ if (rq->cmd_flags & REQ_ELVPRIV)
elv_put_request(q, rq);
mempool_free(rq, q->rq.rq_pool);
}
return NULL;
/*
- * first three bits are identical in rq->flags and bio->bi_rw,
+ * first three bits are identical in rq->cmd_flags and bio->bi_rw,
* see bio.h and blkdev.h
*/
- rq->flags = rw;
+ rq->cmd_flags = rw;
if (priv) {
if (unlikely(elv_set_request(q, rq, bio, gfp_mask))) {
mempool_free(rq, q->rq.rq_pool);
return NULL;
}
- rq->flags |= REQ_ELVPRIV;
+ rq->cmd_flags |= REQ_ELVPRIV;
}
return rq;
* must not attempt merges on this) and that it acts as a soft
* barrier
*/
- rq->flags |= REQ_SPECIAL | REQ_SOFTBARRIER;
+ rq->cmd_type = REQ_TYPE_SPECIAL;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
rq->special = data;
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
rq->rq_disk = bd_disk;
- rq->flags |= REQ_NOMERGE;
+ rq->cmd_flags |= REQ_NOMERGE;
rq->end_io = done;
WARN_ON(irqs_disabled());
spin_lock_irq(q->queue_lock);
*/
if (rl) {
int rw = rq_data_dir(req);
- int priv = req->flags & REQ_ELVPRIV;
+ int priv = req->cmd_flags & REQ_ELVPRIV;
BUG_ON(!list_empty(&req->queuelist));
static void init_request_from_bio(struct request *req, struct bio *bio)
{
- req->flags |= REQ_CMD;
+ req->cmd_type = REQ_TYPE_FS;
/*
* inherit FAILFAST from bio (for read-ahead, and explicit FAILFAST)
*/
if (bio_rw_ahead(bio) || bio_failfast(bio))
- req->flags |= REQ_FAILFAST;
+ req->cmd_flags |= REQ_FAILFAST;
/*
* REQ_BARRIER implies no merging, but lets make it explicit
*/
if (unlikely(bio_barrier(bio)))
- req->flags |= (REQ_HARDBARRIER | REQ_NOMERGE);
+ req->cmd_flags |= (REQ_HARDBARRIER | REQ_NOMERGE);
if (bio_sync(bio))
- req->flags |= REQ_RW_SYNC;
+ req->cmd_flags |= REQ_RW_SYNC;
req->errors = 0;
req->hard_sector = req->sector = bio->bi_sector;
req->errors = 0;
if (!uptodate) {
- if (blk_fs_request(req) && !(req->flags & REQ_QUIET))
+ if (blk_fs_request(req) && !(req->cmd_flags & REQ_QUIET))
printk("end_request: I/O error, dev %s, sector %llu\n",
req->rq_disk ? req->rq_disk->disk_name : "?",
(unsigned long long)req->sector);
void blk_rq_bio_prep(request_queue_t *q, struct request *rq, struct bio *bio)
{
- /* first two bits are identical in rq->flags and bio->bi_rw */
- rq->flags |= (bio->bi_rw & 3);
+ /* first two bits are identical in rq->cmd_flags and bio->bi_rw */
+ rq->cmd_flags |= (bio->bi_rw & 3);
rq->nr_phys_segments = bio_phys_segments(q, bio);
rq->nr_hw_segments = bio_hw_segments(q, bio);
rq->sense = sense;
rq->sense_len = 0;
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
bio = rq->bio;
/*
memset(sense, 0, sizeof(sense));
rq->sense = sense;
rq->sense_len = 0;
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
blk_execute_rq(q, disk, rq, 0);
int err;
rq = blk_get_request(q, WRITE, __GFP_WAIT);
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->data = NULL;
rq->data_len = 0;
rq->timeout = BLK_DEFAULT_TIMEOUT;
if (usage_count == 0) {
printk("warning: usage count=0, current_req=%p exiting\n",
current_req);
- printk("sect=%ld flags=%lx\n", (long)current_req->sector,
- current_req->flags);
+ printk("sect=%ld type=%x flags=%x\n", (long)current_req->sector,
+ current_req->cmd_type, current_req->cmd_flags);
return;
}
if (test_bit(0, &fdc_busy)) {
struct nbd_device *lo;
blkdev_dequeue_request(req);
- dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%lx)\n",
- req->rq_disk->disk_name, req, req->flags);
+ dprintk(DBG_BLKDEV, "%s: request %p: dequeued (flags=%x)\n",
+ req->rq_disk->disk_name, req, req->cmd_type);
- if (!(req->flags & REQ_CMD))
+ if (!blk_fs_request(req))
goto error_out;
lo = req->rq_disk->private_data;
switch (cmd) {
case NBD_DISCONNECT:
printk(KERN_INFO "%s: NBD_DISCONNECT\n", lo->disk->disk_name);
- sreq.flags = REQ_SPECIAL;
+ sreq.cmd_type = REQ_TYPE_SPECIAL;
nbd_cmd(&sreq) = NBD_CMD_DISC;
/*
* Set these to sane values in case server implementation
static enum action do_pd_io_start(void)
{
- if (pd_req->flags & REQ_SPECIAL) {
+ if (blk_special_request(pd_req)) {
phase = pd_special;
return pd_special();
}
rq->sense = sense;
memset(sense, 0, sizeof(sense));
rq->sense_len = 0;
- rq->flags |= REQ_BLOCK_PC | REQ_HARDBARRIER;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
+ rq->cmd_flags |= REQ_HARDBARRIER;
if (cgc->quiet)
- rq->flags |= REQ_QUIET;
+ rq->cmd_flags |= REQ_QUIET;
memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
if (sizeof(rq->cmd) > CDROM_PACKET_SIZE)
memset(rq->cmd + CDROM_PACKET_SIZE, 0, sizeof(rq->cmd) - CDROM_PACKET_SIZE);
rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
rq->ref_count++;
- rq->flags |= REQ_NOMERGE;
rq->waiting = &wait;
rq->end_io = blk_end_sync_rq;
elv_add_request(q, rq, ELEVATOR_INSERT_BACK, 1);
int res = 0;
int retry;
- if (!(req->flags & REQ_CMD)) {
+ if (!blk_fs_request(req)) {
end_request(req, 0);
continue;
}
rq->cmd[9] = 0xf8;
rq->cmd_len = 12;
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->timeout = 60 * HZ;
bio = rq->bio;
}
/* WTF??? */
- if (!(req->flags & REQ_CMD))
+ if (!blk_fs_request(req)) {
+ end_request(req, 0);
continue;
+ }
if (rq_data_dir(req) == WRITE) {
end_request(req, 0);
continue;
{
int log = 0;
- if (!sense || !rq || (rq->flags & REQ_QUIET))
+ if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
return 0;
switch (sense->sense_key) {
struct cdrom_info *cd = drive->driver_data;
ide_init_drive_cmd(rq);
- rq->flags = REQ_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->rq_disk = cd->disk;
}
rq->cmd[0] = GPCMD_REQUEST_SENSE;
rq->cmd[4] = rq->data_len = 18;
- rq->flags = REQ_SENSE;
+ rq->cmd_type = REQ_TYPE_SENSE;
/* NOTE! Save the failed command in "rq->buffer" */
rq->buffer = (void *) failed_command;
struct request *rq = HWGROUP(drive)->rq;
int nsectors = rq->hard_cur_sectors;
- if ((rq->flags & REQ_SENSE) && uptodate) {
+ if (blk_sense_request(rq) && uptodate) {
/*
- * For REQ_SENSE, "rq->buffer" points to the original failed
- * request
+ * For REQ_TYPE_SENSE, "rq->buffer" points to the original
+ * failed request
*/
struct request *failed = (struct request *) rq->buffer;
struct cdrom_info *info = drive->driver_data;
return 1;
}
- if (rq->flags & REQ_SENSE) {
+ if (blk_sense_request(rq)) {
/* We got an error trying to get sense info
from the drive (probably while trying
to recover from a former error). Just give up. */
- rq->flags |= REQ_FAILED;
+ rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
ide_error(drive, "request sense failure", stat);
return 1;
- } else if (rq->flags & (REQ_PC | REQ_BLOCK_PC)) {
+ } else if (blk_pc_request(rq)) {
/* All other functions, except for READ. */
unsigned long flags;
* if we have an error, pass back CHECK_CONDITION as the
* scsi status byte
*/
- if ((rq->flags & REQ_BLOCK_PC) && !rq->errors)
+ if (!rq->errors)
rq->errors = SAM_STAT_CHECK_CONDITION;
/* Check for tray open. */
cdrom_saw_media_change (drive);
/*printk("%s: media changed\n",drive->name);*/
return 0;
- } else if (!(rq->flags & REQ_QUIET)) {
+ } else if (!(rq->cmd_flags & REQ_QUIET)) {
/* Otherwise, print an error. */
ide_dump_status(drive, "packet command error", stat);
}
- rq->flags |= REQ_FAILED;
+ rq->cmd_flags |= REQ_FAILED;
/*
* instead of playing games with moving completions around,
wait = ATAPI_WAIT_PC;
break;
default:
- if (!(rq->flags & REQ_QUIET))
+ if (!(rq->cmd_flags & REQ_QUIET))
printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
wait = 0;
break;
if (rq->current_nr_sectors > 0) {
printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n",
drive->name, rq->current_nr_sectors);
- rq->flags |= REQ_FAILED;
+ rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
} else
cdrom_end_request(drive, 1);
printk ("%s: cdrom_pc_intr: data underrun %d\n",
drive->name, pc->buflen);
*/
- rq->flags |= REQ_FAILED;
+ rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
}
return ide_stopped;
rq->data += thislen;
rq->data_len -= thislen;
- if (rq->flags & REQ_SENSE)
+ if (blk_sense_request(rq))
rq->sense_len += thislen;
} else {
confused:
"appears confused (ireason = 0x%02x). "
"Trying to recover by ending request.\n",
drive->name, ireason);
- rq->flags |= REQ_FAILED;
+ rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
return ide_stopped;
}
struct cdrom_info *info = drive->driver_data;
info->dma = 0;
- rq->flags &= ~REQ_FAILED;
+ rq->cmd_flags &= ~REQ_FAILED;
len = rq->data_len;
/* Start sending the command to the drive. */
{
struct request_sense sense;
int retries = 10;
- unsigned int flags = rq->flags;
+ unsigned int flags = rq->cmd_flags;
if (rq->sense == NULL)
rq->sense = &sense;
do {
int error;
unsigned long time = jiffies;
- rq->flags = flags;
+ rq->cmd_flags = flags;
error = ide_do_drive_cmd(drive, rq, ide_wait);
time = jiffies - time;
/* FIXME: we should probably abort/retry or something
* in case of failure */
- if (rq->flags & REQ_FAILED) {
+ if (rq->cmd_flags & REQ_FAILED) {
/* The request failed. Retry if it was due to a unit
attention status
(usually means media was changed). */
}
/* End of retry loop. */
- } while ((rq->flags & REQ_FAILED) && retries >= 0);
+ } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
/* Return an error if the command failed. */
- return (rq->flags & REQ_FAILED) ? -EIO : 0;
+ return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
}
/*
{
struct cdrom_info *info = drive->driver_data;
- rq->flags |= REQ_QUIET;
+ rq->cmd_flags |= REQ_QUIET;
info->dma = 0;
}
info->last_block = block;
return action;
- } else if (rq->flags & (REQ_PC | REQ_SENSE)) {
+ } else if (rq->cmd_type == REQ_TYPE_SENSE) {
return cdrom_do_packet_command(drive);
- } else if (rq->flags & REQ_BLOCK_PC) {
+ } else if (blk_pc_request(rq)) {
return cdrom_do_block_pc(drive, rq);
- } else if (rq->flags & REQ_SPECIAL) {
+ } else if (blk_special_request(rq)) {
/*
* right now this can only be a reset...
*/
req.sense = sense;
req.cmd[0] = GPCMD_TEST_UNIT_READY;
- req.flags |= REQ_QUIET;
+ req.cmd_flags |= REQ_QUIET;
#if ! STANDARD_ATAPI
/* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
req.data = (char *)&capbuf;
req.data_len = sizeof(capbuf);
- req.flags |= REQ_QUIET;
+ req.cmd_flags |= REQ_QUIET;
stat = cdrom_queue_packet_command(drive, &req);
if (stat == 0) {
req.sense = sense;
req.data = buf;
req.data_len = buflen;
- req.flags |= REQ_QUIET;
+ req.cmd_flags |= REQ_QUIET;
req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
req.cmd[6] = trackno;
req.cmd[7] = (buflen >> 8);
req.timeout = cgc->timeout;
if (cgc->quiet)
- req.flags |= REQ_QUIET;
+ req.cmd_flags |= REQ_QUIET;
req.sense = cgc->sense;
cgc->stat = cdrom_queue_packet_command(drive, &req);
int ret;
cdrom_prepare_request(drive, &req);
- req.flags = REQ_SPECIAL | REQ_QUIET;
+ req.cmd_type = REQ_TYPE_SPECIAL;
+ req.cmd_flags = REQ_QUIET;
ret = ide_do_drive_cmd(drive, &req, ide_wait);
/*
static int ide_cdrom_prep_fn(request_queue_t *q, struct request *rq)
{
- if (rq->flags & REQ_CMD)
+ if (blk_fs_request(rq))
return ide_cdrom_prep_fs(q, rq);
- else if (rq->flags & REQ_BLOCK_PC)
+ else if (blk_pc_request(rq))
return ide_cdrom_prep_pc(rq);
return 0;
rq->cmd[0] = WIN_FLUSH_CACHE;
- rq->flags |= REQ_DRIVE_TASK;
+ rq->cmd_type = REQ_TYPE_ATA_TASK;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
rq->buffer = rq->cmd;
}
if (drive->special.b.set_multmode)
return -EBUSY;
ide_init_drive_cmd (&rq);
- rq.flags = REQ_DRIVE_CMD;
+ rq.cmd_type = REQ_TYPE_ATA_CMD;
drive->mult_req = arg;
drive->special.b.set_multmode = 1;
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
ide_hwif_t *hwif = HWIF(drive);
struct scatterlist *sg = hwif->sg_table;
- BUG_ON((rq->flags & REQ_DRIVE_TASKFILE) && rq->nr_sectors > 256);
+ BUG_ON((rq->cmd_type == REQ_TYPE_ATA_TASKFILE) && rq->nr_sectors > 256);
ide_map_sg(drive, rq);
/* Why does this happen? */
if (!rq)
return 0;
- if (!(rq->flags & REQ_SPECIAL)) { //if (!IDEFLOPPY_RQ_CMD (rq->cmd)) {
+ if (!blk_special_request(rq)) {
/* our real local end request function */
ide_end_request(drive, uptodate, nsecs);
return 0;
ide_init_drive_cmd(rq);
rq->buffer = (char *) pc;
- rq->flags = REQ_SPECIAL; //rq->cmd = IDEFLOPPY_PC_RQ;
+ rq->cmd_type = REQ_TYPE_SPECIAL;
rq->rq_disk = floppy->disk;
(void) ide_do_drive_cmd(drive, rq, ide_preempt);
}
pc->callback = &idefloppy_rw_callback;
pc->rq = rq;
pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
- if (rq->flags & REQ_RW)
+ if (rq->cmd_flags & REQ_RW)
set_bit(PC_WRITING, &pc->flags);
pc->buffer = NULL;
pc->request_transfer = pc->buffer_size = blocks * floppy->block_size;
idefloppy_do_end_request(drive, 0, 0);
return ide_stopped;
}
- if (rq->flags & REQ_CMD) {
+ if (blk_fs_request(rq)) {
if (((long)rq->sector % floppy->bs_factor) ||
(rq->nr_sectors % floppy->bs_factor)) {
printk("%s: unsupported r/w request size\n",
}
pc = idefloppy_next_pc_storage(drive);
idefloppy_create_rw_cmd(floppy, pc, rq, block);
- } else if (rq->flags & REQ_SPECIAL) {
+ } else if (blk_special_request(rq)) {
pc = (idefloppy_pc_t *) rq->buffer;
- } else if (rq->flags & REQ_BLOCK_PC) {
+ } else if (blk_pc_request(rq)) {
pc = idefloppy_next_pc_storage(drive);
if (idefloppy_blockpc_cmd(floppy, pc, rq)) {
idefloppy_do_end_request(drive, 0, 0);
ide_init_drive_cmd (&rq);
rq.buffer = (char *) pc;
- rq.flags = REQ_SPECIAL; // rq.cmd = IDEFLOPPY_PC_RQ;
+ rq.cmd_type = REQ_TYPE_SPECIAL;
rq.rq_disk = floppy->disk;
return ide_do_drive_cmd(drive, &rq, ide_wait);
{
int ret = 1;
- BUG_ON(!(rq->flags & REQ_STARTED));
+ BUG_ON(!blk_rq_started(rq));
/*
* if failfast is set on a request, override number of sectors and
spin_lock_irqsave(&ide_lock, flags);
- BUG_ON(!(rq->flags & REQ_STARTED));
+ BUG_ON(!blk_rq_started(rq));
/*
* if failfast is set on a request, override number of sectors and
rq = HWGROUP(drive)->rq;
spin_unlock_irqrestore(&ide_lock, flags);
- if (rq->flags & REQ_DRIVE_CMD) {
+ if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
u8 *args = (u8 *) rq->buffer;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
args[1] = err;
args[2] = hwif->INB(IDE_NSECTOR_REG);
}
- } else if (rq->flags & REQ_DRIVE_TASK) {
+ } else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
u8 *args = (u8 *) rq->buffer;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
args[5] = hwif->INB(IDE_HCYL_REG);
args[6] = hwif->INB(IDE_SELECT_REG);
}
- } else if (rq->flags & REQ_DRIVE_TASKFILE) {
+ } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = (ide_task_t *) rq->special;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
return ide_stopped;
/* retry only "normal" I/O: */
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
+ if (!blk_fs_request(rq)) {
rq->errors = 1;
ide_end_drive_cmd(drive, stat, err);
return ide_stopped;
return ide_stopped;
/* retry only "normal" I/O: */
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
+ if (!blk_fs_request(rq)) {
rq->errors = 1;
ide_end_drive_cmd(drive, BUSY_STAT, 0);
return ide_stopped;
if (hwif->sg_mapped) /* needed by ide-scsi */
return;
- if ((rq->flags & REQ_DRIVE_TASKFILE) == 0) {
+ if (rq->cmd_type != REQ_TYPE_ATA_TASKFILE) {
hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg);
} else {
sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE);
struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
- if (rq->flags & REQ_DRIVE_TASKFILE) {
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = rq->special;
if (!args)
if (args->tf_out_flags.all != 0)
return flagged_taskfile(drive, args);
return do_rw_taskfile(drive, args);
- } else if (rq->flags & REQ_DRIVE_TASK) {
+ } else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
u8 *args = rq->buffer;
u8 sel;
hwif->OUTB(sel, IDE_SELECT_REG);
ide_cmd(drive, args[0], args[2], &drive_cmd_intr);
return ide_started;
- } else if (rq->flags & REQ_DRIVE_CMD) {
+ } else if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
u8 *args = rq->buffer;
if (!args)
ide_startstop_t startstop;
sector_t block;
- BUG_ON(!(rq->flags & REQ_STARTED));
+ BUG_ON(!blk_rq_started(rq));
#ifdef DEBUG
printk("%s: start_request: current=0x%08lx\n",
if (!drive->special.all) {
ide_driver_t *drv;
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK))
- return execute_drive_cmd(drive, rq);
- else if (rq->flags & REQ_DRIVE_TASKFILE)
+ if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
+ rq->cmd_type == REQ_TYPE_ATA_TASK ||
+ rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->end_io_data;
* We count how many times we loop here to make sure we service
* all drives in the hwgroup without looping for ever
*/
- if (drive->blocked && !blk_pm_request(rq) && !(rq->flags & REQ_PREEMPT)) {
+ if (drive->blocked && !blk_pm_request(rq) && !(rq->cmd_flags & REQ_PREEMPT)) {
drive = drive->next ? drive->next : hwgroup->drive;
if (loops++ < 4 && !blk_queue_plugged(drive->queue))
goto again;
void ide_init_drive_cmd (struct request *rq)
{
memset(rq, 0, sizeof(*rq));
- rq->flags = REQ_DRIVE_CMD;
+ rq->cmd_type = REQ_TYPE_ATA_CMD;
rq->ref_count = 1;
}
hwgroup->rq = NULL;
if (action == ide_preempt || action == ide_head_wait) {
where = ELEVATOR_INSERT_FRONT;
- rq->flags |= REQ_PREEMPT;
+ rq->cmd_flags |= REQ_PREEMPT;
}
__elv_add_request(drive->queue, rq, where, 0);
ide_do_request(hwgroup, IDE_NO_IRQ);
spin_unlock(&ide_lock);
if (!rq)
return;
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK)) {
+ if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
+ rq->cmd_type == REQ_TYPE_ATA_TASK) {
char *args = rq->buffer;
if (args) {
opcode = args[0];
found = 1;
}
- } else if (rq->flags & REQ_DRIVE_TASKFILE) {
+ } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *args = rq->special;
if (args) {
task_struct_t *tf = (task_struct_t *) args->tfRegister;
static void idetape_init_rq(struct request *rq, u8 cmd)
{
memset(rq, 0, sizeof(*rq));
- rq->flags = REQ_SPECIAL;
+ rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[0] = cmd;
}
rq->sector, rq->nr_sectors, rq->current_nr_sectors);
#endif /* IDETAPE_DEBUG_LOG */
- if ((rq->flags & REQ_SPECIAL) == 0) {
+ if (!blk_special_request(rq)) {
/*
* We do not support buffer cache originated requests.
*/
printk(KERN_NOTICE "ide-tape: %s: Unsupported request in "
- "request queue (%ld)\n", drive->name, rq->flags);
+ "request queue (%d)\n", drive->name, rq->cmd_type);
ide_end_request(drive, 0, 0);
return ide_stopped;
}
idetape_tape_t *tape = drive->driver_data;
#if IDETAPE_DEBUG_BUGS
- if (rq == NULL || (rq->flags & REQ_SPECIAL) == 0) {
+ if (rq == NULL || !blk_special_request(rq)) {
printk (KERN_ERR "ide-tape: bug: Trying to sleep on non-valid request\n");
return;
}
static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
{
- if (rq->flags & REQ_DRIVE_TASKFILE) {
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *task = rq->special;
if (task->tf_out_flags.all) {
struct request rq;
memset(&rq, 0, sizeof(rq));
- rq.flags = REQ_DRIVE_TASKFILE;
+ rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
rq.buffer = buf;
/*
rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors;
if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE)
- rq.flags |= REQ_RW;
+ rq.cmd_flags |= REQ_RW;
}
rq.special = args;
struct request rq;
ide_init_drive_cmd(&rq);
- rq.flags = REQ_DRIVE_TASK;
+ rq.cmd_type = REQ_TYPE_ATA_TASK;
rq.buffer = buf;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
memset(&rq, 0, sizeof(rq));
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
- rq.flags = REQ_PM_SUSPEND;
+ rq.cmd_type = REQ_TYPE_PM_SUSPEND;
rq.special = &args;
rq.end_io_data = &rqpm;
rqpm.pm_step = ide_pm_state_start_suspend;
memset(&rq, 0, sizeof(rq));
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
- rq.flags = REQ_PM_RESUME;
+ rq.cmd_type = REQ_TYPE_PM_RESUME;
rq.special = &args;
rq.end_io_data = &rqpm;
rqpm.pm_step = ide_pm_state_start_resume;
req->rq_disk->disk_name, (req->cmd == READ)?"read":"writ",
cyl, head, sec, nsect, req->buffer);
#endif
- if (req->flags & REQ_CMD) {
+ if (blk_fs_request(req)) {
switch (rq_data_dir(req)) {
case READ:
hd_out(disk,nsect,sec,head,cyl,WIN_READ,&read_intr);
memset(&rq->cmd, 0, BLK_MAX_CDB);
rq->timeout = EMC_FAILOVER_TIMEOUT;
- rq->flags |= (REQ_BLOCK_PC | REQ_FAILFAST | REQ_NOMERGE);
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
+ rq->cmd_flags |= REQ_FAILFAST | REQ_NOMERGE;
return rq;
}
}
/* request is already processed by us, so return */
- if (req->flags & REQ_SPECIAL) {
+ if (blk_special_request(req)) {
osm_debug("REQ_SPECIAL already set!\n");
- req->flags |= REQ_DONTPREP;
+ req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
}
ireq = req->special;
/* do not come back here */
- req->flags |= REQ_DONTPREP | REQ_SPECIAL;
+ req->cmd_type = REQ_TYPE_SPECIAL;
+ req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
};
struct mmc_queue *mq = q->queuedata;
int ret = BLKPREP_KILL;
- if (req->flags & REQ_SPECIAL) {
+ if (blk_special_request(req)) {
/*
* Special commands already have the command
* blocks already setup in req->special.
BUG_ON(!req->special);
ret = BLKPREP_OK;
- } else if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
+ } else if (blk_fs_request(req) || blk_pc_request(req)) {
/*
* Block I/O requests need translating according
* to the protocol.
}
if (ret == BLKPREP_OK)
- req->flags |= REQ_DONTPREP;
+ req->cmd_flags |= REQ_DONTPREP;
return ret;
}
nsect = req->current_nr_sectors;
buf = req->buffer;
- if (!(req->flags & REQ_CMD))
+ if (!blk_fs_request(req))
return 0;
if (block + nsect > get_capacity(req->rq_disk))
}
cqr->retries = DIAG_MAX_RETRIES;
cqr->buildclk = get_clock();
- if (req->flags & REQ_FAILFAST)
+ if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = DIAG_TIMEOUT;
recid++;
}
}
- if (req->flags & REQ_FAILFAST)
+ if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
recid++;
}
}
- if (req->flags & REQ_FAILFAST)
+ if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
cqr->device = device;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
aic_dev->r_total++;
ptr = aic_dev->r_bins;
}
- if(cmd->device->simple_tags && cmd->request->flags & REQ_HARDBARRIER)
+ if(cmd->device->simple_tags && cmd->request->cmd_flags & REQ_HARDBARRIER)
{
aic_dev->barrier_total++;
if(scb->tag_action == MSG_ORDERED_Q_TAG)
/* We always force TEST_UNIT_READY to untagged */
if (cmd->cmnd[0] != TEST_UNIT_READY && sdptr->simple_tags)
{
- if (req->flags & REQ_HARDBARRIER)
+ if (req->cmd_flags & REQ_HARDBARRIER)
{
if(sdptr->ordered_tags)
{
pc->buffer = buf;
pc->c[0] = REQUEST_SENSE;
pc->c[4] = pc->request_transfer = pc->buffer_size = SCSI_SENSE_BUFFERSIZE;
- rq->flags = REQ_SENSE;
+ rq->cmd_type = REQ_TYPE_SENSE;
pc->timeout = jiffies + WAIT_READY;
/* NOTE! Save the failed packet command in "rq->buffer" */
rq->buffer = (void *) failed_command->special;
int errors = rq->errors;
unsigned long flags;
- if (!(rq->flags & (REQ_SPECIAL|REQ_SENSE))) {
+ if (!blk_special_request(rq) && !blk_sense_request(rq)) {
ide_end_request(drive, uptodate, nrsecs);
return 0;
}
ide_end_drive_cmd (drive, 0, 0);
- if (rq->flags & REQ_SENSE) {
+ if (blk_sense_request(rq)) {
idescsi_pc_t *opc = (idescsi_pc_t *) rq->buffer;
if (log) {
printk ("ide-scsi: %s: wrap up check %lu, rst = ", drive->name, opc->scsi_cmd->serial_number);
printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors);
#endif /* IDESCSI_DEBUG_LOG */
- if (rq->flags & (REQ_SPECIAL|REQ_SENSE)) {
+ if (blk_sense_request(rq) || blk_special_request(rq)) {
return idescsi_issue_pc (drive, (idescsi_pc_t *) rq->special);
}
blk_dump_rq_flags(rq, "ide-scsi: unsup command");
ide_init_drive_cmd (rq);
rq->special = (char *) pc;
- rq->flags = REQ_SPECIAL;
+ rq->cmd_type = REQ_TYPE_SPECIAL;
spin_unlock_irq(host->host_lock);
rq->rq_disk = scsi->disk;
(void) ide_do_drive_cmd (drive, rq, ide_end);
*/
printk (KERN_ERR "ide-scsi: cmd aborted!\n");
- if (scsi->pc->rq->flags & REQ_SENSE)
+ if (blk_sense_request(scsi->pc->rq))
kfree(scsi->pc->buffer);
kfree(scsi->pc->rq);
kfree(scsi->pc);
/* kill current request */
blkdev_dequeue_request(req);
end_that_request_last(req, 0);
- if (req->flags & REQ_SENSE)
+ if (blk_sense_request(req))
kfree(scsi->pc->buffer);
kfree(scsi->pc);
scsi->pc = NULL;
static void __init pluto_detect_scsi_done(Scsi_Cmnd *SCpnt)
{
- SCpnt->request->rq_status = RQ_SCSI_DONE;
PLND(("Detect done %08lx\n", (long)SCpnt))
if (atomic_dec_and_test (&fcss))
up(&fc_sem);
SCpnt->cmd_len = COMMAND_SIZE(INQUIRY);
- SCpnt->request->rq_status = RQ_SCSI_BUSY;
+ SCpnt->request->cmd_flags &= ~REQ_STARTED;
SCpnt->done = pluto_detect_done;
SCpnt->request_bufflen = 256;
for (retry = 0; retry < 5; retry++) {
for (i = 0; i < fcscount; i++) {
if (!fcs[i].fc) break;
- if (fcs[i].cmd.request->rq_status != RQ_SCSI_DONE) {
+ if (!(fcs[i].cmd.request->cmd_flags & REQ_STARTED)) {
+ fcs[i].cmd.request->cmd_flags |= REQ_STARTED;
disable_irq(fcs[i].fc->irq);
PLND(("queuecommand %d %d\n", retry, i))
fcp_scsi_queuecommand (&(fcs[i].cmd),
{
struct scsi_cmnd *cmd = req->special;
- req->flags &= ~REQ_DONTPREP;
+ req->cmd_flags &= ~REQ_DONTPREP;
req->special = NULL;
scsi_put_command(cmd);
req->sense_len = 0;
req->retries = retries;
req->timeout = timeout;
- req->flags |= flags | REQ_BLOCK_PC | REQ_SPECIAL | REQ_QUIET;
+ req->cmd_type = REQ_TYPE_BLOCK_PC;
+ req->cmd_flags |= flags | REQ_QUIET | REQ_PREEMPT;
/*
* head injection *required* here otherwise quiesce won't work
req = blk_get_request(sdev->request_queue, write, gfp);
if (!req)
goto free_sense;
- req->flags |= REQ_BLOCK_PC | REQ_QUIET;
+ req->cmd_type = REQ_TYPE_BLOCK_PC;
+ req->cmd_flags |= REQ_QUIET;
if (use_sg)
err = scsi_req_map_sg(req, buffer, use_sg, bufflen, gfp);
break;
}
}
- if (!(req->flags & REQ_QUIET)) {
+ if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"Device not ready: ");
scsi_print_sense_hdr("", &sshdr);
scsi_end_request(cmd, 0, this_count, 1);
return;
case VOLUME_OVERFLOW:
- if (!(req->flags & REQ_QUIET)) {
+ if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"Volume overflow, CDB: ");
__scsi_print_command(cmd->cmnd);
return;
}
if (result) {
- if (!(req->flags & REQ_QUIET)) {
+ if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"SCSI error: return code = 0x%08x\n",
result);
/*
* if this is a rq->data based REQ_BLOCK_PC, setup for a non-sg xfer
*/
- if ((req->flags & REQ_BLOCK_PC) && !req->bio) {
+ if (blk_pc_request(req) && !req->bio) {
cmd->request_bufflen = req->data_len;
cmd->request_buffer = req->data;
req->buffer = req->data;
* these two cases differently. We differentiate by looking
* at request->cmd, as this tells us the real story.
*/
- if (req->flags & REQ_SPECIAL && req->special) {
+ if (blk_special_request(req) && req->special)
cmd = req->special;
- } else if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
-
- if(unlikely(specials_only) && !(req->flags & REQ_SPECIAL)) {
- if(specials_only == SDEV_QUIESCE ||
- specials_only == SDEV_BLOCK)
+ else if (blk_pc_request(req) || blk_fs_request(req)) {
+ if (unlikely(specials_only) && !(req->cmd_flags & REQ_PREEMPT)){
+ if (specials_only == SDEV_QUIESCE ||
+ specials_only == SDEV_BLOCK)
goto defer;
sdev_printk(KERN_ERR, sdev,
goto kill;
}
-
/*
* Now try and find a command block that we can use.
*/
* lock. We hope REQ_STARTED prevents anything untoward from
* happening now.
*/
- if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) {
+ if (blk_fs_request(req) || blk_pc_request(req)) {
int ret;
/*
/*
* Initialize the actual SCSI command for this request.
*/
- if (req->flags & REQ_BLOCK_PC) {
+ if (blk_pc_request(req)) {
scsi_setup_blk_pc_cmnd(cmd);
} else if (req->rq_disk) {
struct scsi_driver *drv;
/*
* The request is now prepped, no need to come back here
*/
- req->flags |= REQ_DONTPREP;
+ req->cmd_flags |= REQ_DONTPREP;
return BLKPREP_OK;
defer:
if (unlikely(cmd == NULL)) {
printk(KERN_CRIT "impossible request in %s.\n"
"please mail a stack trace to "
- "linux-scsi@vger.kernel.org",
+ "linux-scsi@vger.kernel.org\n",
__FUNCTION__);
+ blk_dump_rq_flags(req, "foo");
BUG();
}
spin_lock(shost->host_lock);
SCpnt->cmnd[0] = READ_6;
SCpnt->sc_data_direction = DMA_FROM_DEVICE;
} else {
- printk(KERN_ERR "sd: Unknown command %lx\n", rq->flags);
-/* overkill panic("Unknown sd command %lx\n", rq->flags); */
+ printk(KERN_ERR "sd: Unknown command %x\n", rq->cmd_flags);
return 0;
}
static void sd_prepare_flush(request_queue_t *q, struct request *rq)
{
memset(rq->cmd, 0, sizeof(rq->cmd));
- rq->flags |= REQ_BLOCK_PC;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->timeout = SD_TIMEOUT;
rq->cmd[0] = SYNCHRONIZE_CACHE;
rq->cmd_len = 10;
if((count > SUN3_DMA_MINSIZE) && (sun3_dma_setup_done
!= cmd))
{
- if(cmd->request->flags & REQ_CMD) {
+ if(blk_fs_request(cmd->request)) {
sun3scsi_dma_setup(d, count,
rq_data_dir(cmd->request));
sun3_dma_setup_done = cmd;
static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted, Scsi_Cmnd *cmd,
int write_flag)
{
- if(cmd->request->flags & REQ_CMD)
+ if(blk_fs_request(cmd->request))
return wanted;
else
return 0;
static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted, Scsi_Cmnd *cmd,
int write_flag)
{
- if(cmd->request->flags & REQ_CMD)
+ if(blk_fs_request(cmd->request))
return wanted;
else
return 0;
wait_queue_head_t wait[2];
};
+/*
+ * request command types
+ */
+enum rq_cmd_type_bits {
+ REQ_TYPE_FS = 1, /* fs request */
+ REQ_TYPE_BLOCK_PC, /* scsi command */
+ REQ_TYPE_SENSE, /* sense request */
+ REQ_TYPE_PM_SUSPEND, /* suspend request */
+ REQ_TYPE_PM_RESUME, /* resume request */
+ REQ_TYPE_PM_SHUTDOWN, /* shutdown request */
+ REQ_TYPE_FLUSH, /* flush request */
+ REQ_TYPE_SPECIAL, /* driver defined type */
+ REQ_TYPE_LINUX_BLOCK, /* generic block layer message */
+ /*
+ * for ATA/ATAPI devices. this really doesn't belong here, ide should
+ * use REQ_TYPE_SPECIAL and use rq->cmd[0] with the range of driver
+ * private REQ_LB opcodes to differentiate what type of request this is
+ */
+ REQ_TYPE_ATA_CMD,
+ REQ_TYPE_ATA_TASK,
+ REQ_TYPE_ATA_TASKFILE,
+};
+
+/*
+ * For request of type REQ_TYPE_LINUX_BLOCK, rq->cmd[0] is the opcode being
+ * sent down (similar to how REQ_TYPE_BLOCK_PC means that ->cmd[] holds a
+ * SCSI cdb.
+ *
+ * 0x00 -> 0x3f are driver private, to be used for whatever purpose they need,
+ * typically to differentiate REQ_TYPE_SPECIAL requests.
+ *
+ */
+enum {
+ /*
+ * just examples for now
+ */
+ REQ_LB_OP_EJECT = 0x40, /* eject request */
+ REQ_LB_OP_FLUSH = 0x41, /* flush device */
+};
+
+/*
+ * request type modified bits. first three bits match BIO_RW* bits, important
+ */
+enum rq_flag_bits {
+ __REQ_RW, /* not set, read. set, write */
+ __REQ_FAILFAST, /* no low level driver retries */
+ __REQ_SORTED, /* elevator knows about this request */
+ __REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
+ __REQ_HARDBARRIER, /* may not be passed by drive either */
+ __REQ_FUA, /* forced unit access */
+ __REQ_NOMERGE, /* don't touch this for merging */
+ __REQ_STARTED, /* drive already may have started this one */
+ __REQ_DONTPREP, /* don't call prep for this one */
+ __REQ_QUEUED, /* uses queueing */
+ __REQ_ELVPRIV, /* elevator private data attached */
+ __REQ_FAILED, /* set if the request failed */
+ __REQ_QUIET, /* don't worry about errors */
+ __REQ_PREEMPT, /* set for "ide_preempt" requests */
+ __REQ_ORDERED_COLOR, /* is before or after barrier */
+ __REQ_RW_SYNC, /* request is sync (O_DIRECT) */
+ __REQ_NR_BITS, /* stops here */
+};
+
+#define REQ_RW (1 << __REQ_RW)
+#define REQ_FAILFAST (1 << __REQ_FAILFAST)
+#define REQ_SORTED (1 << __REQ_SORTED)
+#define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER)
+#define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER)
+#define REQ_FUA (1 << __REQ_FUA)
+#define REQ_NOMERGE (1 << __REQ_NOMERGE)
+#define REQ_STARTED (1 << __REQ_STARTED)
+#define REQ_DONTPREP (1 << __REQ_DONTPREP)
+#define REQ_QUEUED (1 << __REQ_QUEUED)
+#define REQ_ELVPRIV (1 << __REQ_ELVPRIV)
+#define REQ_FAILED (1 << __REQ_FAILED)
+#define REQ_QUIET (1 << __REQ_QUIET)
+#define REQ_PREEMPT (1 << __REQ_PREEMPT)
+#define REQ_ORDERED_COLOR (1 << __REQ_ORDERED_COLOR)
+#define REQ_RW_SYNC (1 << __REQ_RW_SYNC)
+
#define BLK_MAX_CDB 16
/*
struct list_head queuelist;
struct list_head donelist;
- unsigned long flags; /* see REQ_ bits below */
+ unsigned int cmd_flags;
+ enum rq_cmd_type_bits cmd_type;
/* Maintain bio traversal state for part by part I/O submission.
* hard_* are block layer internals, no driver should touch them!
};
/*
- * first three bits match BIO_RW* bits, important
- */
-enum rq_flag_bits {
- __REQ_RW, /* not set, read. set, write */
- __REQ_FAILFAST, /* no low level driver retries */
- __REQ_SORTED, /* elevator knows about this request */
- __REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
- __REQ_HARDBARRIER, /* may not be passed by drive either */
- __REQ_FUA, /* forced unit access */
- __REQ_CMD, /* is a regular fs rw request */
- __REQ_NOMERGE, /* don't touch this for merging */
- __REQ_STARTED, /* drive already may have started this one */
- __REQ_DONTPREP, /* don't call prep for this one */
- __REQ_QUEUED, /* uses queueing */
- __REQ_ELVPRIV, /* elevator private data attached */
- /*
- * for ATA/ATAPI devices
- */
- __REQ_PC, /* packet command (special) */
- __REQ_BLOCK_PC, /* queued down pc from block layer */
- __REQ_SENSE, /* sense retrival */
-
- __REQ_FAILED, /* set if the request failed */
- __REQ_QUIET, /* don't worry about errors */
- __REQ_SPECIAL, /* driver suplied command */
- __REQ_DRIVE_CMD,
- __REQ_DRIVE_TASK,
- __REQ_DRIVE_TASKFILE,
- __REQ_PREEMPT, /* set for "ide_preempt" requests */
- __REQ_PM_SUSPEND, /* suspend request */
- __REQ_PM_RESUME, /* resume request */
- __REQ_PM_SHUTDOWN, /* shutdown request */
- __REQ_ORDERED_COLOR, /* is before or after barrier */
- __REQ_RW_SYNC, /* request is sync (O_DIRECT) */
- __REQ_NR_BITS, /* stops here */
-};
-
-#define REQ_RW (1 << __REQ_RW)
-#define REQ_FAILFAST (1 << __REQ_FAILFAST)
-#define REQ_SORTED (1 << __REQ_SORTED)
-#define REQ_SOFTBARRIER (1 << __REQ_SOFTBARRIER)
-#define REQ_HARDBARRIER (1 << __REQ_HARDBARRIER)
-#define REQ_FUA (1 << __REQ_FUA)
-#define REQ_CMD (1 << __REQ_CMD)
-#define REQ_NOMERGE (1 << __REQ_NOMERGE)
-#define REQ_STARTED (1 << __REQ_STARTED)
-#define REQ_DONTPREP (1 << __REQ_DONTPREP)
-#define REQ_QUEUED (1 << __REQ_QUEUED)
-#define REQ_ELVPRIV (1 << __REQ_ELVPRIV)
-#define REQ_PC (1 << __REQ_PC)
-#define REQ_BLOCK_PC (1 << __REQ_BLOCK_PC)
-#define REQ_SENSE (1 << __REQ_SENSE)
-#define REQ_FAILED (1 << __REQ_FAILED)
-#define REQ_QUIET (1 << __REQ_QUIET)
-#define REQ_SPECIAL (1 << __REQ_SPECIAL)
-#define REQ_DRIVE_CMD (1 << __REQ_DRIVE_CMD)
-#define REQ_DRIVE_TASK (1 << __REQ_DRIVE_TASK)
-#define REQ_DRIVE_TASKFILE (1 << __REQ_DRIVE_TASKFILE)
-#define REQ_PREEMPT (1 << __REQ_PREEMPT)
-#define REQ_PM_SUSPEND (1 << __REQ_PM_SUSPEND)
-#define REQ_PM_RESUME (1 << __REQ_PM_RESUME)
-#define REQ_PM_SHUTDOWN (1 << __REQ_PM_SHUTDOWN)
-#define REQ_ORDERED_COLOR (1 << __REQ_ORDERED_COLOR)
-#define REQ_RW_SYNC (1 << __REQ_RW_SYNC)
-
-/*
- * State information carried for REQ_PM_SUSPEND and REQ_PM_RESUME
+ * State information carried for REQ_TYPE_PM_SUSPEND and REQ_TYPE_PM_RESUME
* requests. Some step values could eventually be made generic.
*/
struct request_pm_state
#define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
#define blk_queue_flushing(q) ((q)->ordseq)
-#define blk_fs_request(rq) ((rq)->flags & REQ_CMD)
-#define blk_pc_request(rq) ((rq)->flags & REQ_BLOCK_PC)
-#define blk_noretry_request(rq) ((rq)->flags & REQ_FAILFAST)
-#define blk_rq_started(rq) ((rq)->flags & REQ_STARTED)
+#define blk_fs_request(rq) ((rq)->cmd_type == REQ_TYPE_FS)
+#define blk_pc_request(rq) ((rq)->cmd_type == REQ_TYPE_BLOCK_PC)
+#define blk_special_request(rq) ((rq)->cmd_type == REQ_TYPE_SPECIAL)
+#define blk_sense_request(rq) ((rq)->cmd_type == REQ_TYPE_SENSE)
+
+#define blk_noretry_request(rq) ((rq)->cmd_flags & REQ_FAILFAST)
+#define blk_rq_started(rq) ((rq)->cmd_flags & REQ_STARTED)
#define blk_account_rq(rq) (blk_rq_started(rq) && blk_fs_request(rq))
-#define blk_pm_suspend_request(rq) ((rq)->flags & REQ_PM_SUSPEND)
-#define blk_pm_resume_request(rq) ((rq)->flags & REQ_PM_RESUME)
+#define blk_pm_suspend_request(rq) ((rq)->cmd_type == REQ_TYPE_PM_SUSPEND)
+#define blk_pm_resume_request(rq) ((rq)->cmd_type == REQ_TYPE_PM_RESUME)
#define blk_pm_request(rq) \
- ((rq)->flags & (REQ_PM_SUSPEND | REQ_PM_RESUME))
+ (blk_pm_suspend_request(rq) || blk_pm_resume_request(rq))
-#define blk_sorted_rq(rq) ((rq)->flags & REQ_SORTED)
-#define blk_barrier_rq(rq) ((rq)->flags & REQ_HARDBARRIER)
-#define blk_fua_rq(rq) ((rq)->flags & REQ_FUA)
+#define blk_sorted_rq(rq) ((rq)->cmd_flags & REQ_SORTED)
+#define blk_barrier_rq(rq) ((rq)->cmd_flags & REQ_HARDBARRIER)
+#define blk_fua_rq(rq) ((rq)->cmd_flags & REQ_FUA)
#define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist)
-#define rq_data_dir(rq) ((rq)->flags & 1)
+#define rq_data_dir(rq) ((rq)->cmd_flags & 1)
static inline int blk_queue_full(struct request_queue *q, int rw)
{
#define RQ_NOMERGE_FLAGS \
(REQ_NOMERGE | REQ_STARTED | REQ_HARDBARRIER | REQ_SOFTBARRIER)
#define rq_mergeable(rq) \
- (!((rq)->flags & RQ_NOMERGE_FLAGS) && blk_fs_request((rq)))
+ (!((rq)->cmd_flags & RQ_NOMERGE_FLAGS) && blk_fs_request((rq)))
/*
* noop, requests are automagically marked as active/inactive by I/O
*/
#define blk_queue_tag_depth(q) ((q)->queue_tags->busy)
#define blk_queue_tag_queue(q) ((q)->queue_tags->busy < (q)->queue_tags->max_depth)
-#define blk_rq_tagged(rq) ((rq)->flags & REQ_QUEUED)
+#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
extern int blk_queue_start_tag(request_queue_t *, struct request *);
extern struct request *blk_queue_find_tag(request_queue_t *, int);
extern void blk_queue_end_tag(request_queue_t *, struct request *);
u32 what)
{
struct blk_trace *bt = q->blk_trace;
- int rw = rq->flags & 0x03;
+ int rw = rq->cmd_flags & 0x03;
if (likely(!bt))
return;
struct scsi_device *sdev = cmd->device;
if (blk_rq_tagged(req)) {
- if (sdev->ordered_tags && req->flags & REQ_HARDBARRIER)
+ if (sdev->ordered_tags && req->cmd_flags & REQ_HARDBARRIER)
*msg++ = MSG_ORDERED_TAG;
else
*msg++ = MSG_SIMPLE_TAG;
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff