block layer would invoke to pre-build device commands for a given request,
or perform other preparatory processing for the request. This is routine is
called by elv_next_request(), i.e. typically just before servicing a request.
-(The prepare function would not be called for requests that have REQ_DONTPREP
+(The prepare function would not be called for requests that have RQF_DONTPREP
enabled)
Aside:
if (error)
bio->bi_error = error;
- if (unlikely(rq->cmd_flags & REQ_QUIET))
+ if (unlikely(rq->rq_flags & RQF_QUIET))
bio_set_flag(bio, BIO_QUIET);
bio_advance(bio, nbytes);
/* don't actually finish bio if it's part of flush sequence */
- if (bio->bi_iter.bi_size == 0 && !(rq->cmd_flags & REQ_FLUSH_SEQ))
+ if (bio->bi_iter.bi_size == 0 && !(rq->rq_flags & RQF_FLUSH_SEQ))
bio_endio(bio);
}
static inline void blk_free_request(struct request_list *rl, struct request *rq)
{
- if (rq->cmd_flags & REQ_ELVPRIV) {
+ if (rq->rq_flags & RQF_ELVPRIV) {
elv_put_request(rl->q, rq);
if (rq->elv.icq)
put_io_context(rq->elv.icq->ioc);
* A request has just been released. Account for it, update the full and
* congestion status, wake up any waiters. Called under q->queue_lock.
*/
-static void freed_request(struct request_list *rl, int op, unsigned int flags)
+static void freed_request(struct request_list *rl, bool sync,
+ req_flags_t rq_flags)
{
struct request_queue *q = rl->q;
- int sync = rw_is_sync(op, flags);
q->nr_rqs[sync]--;
rl->count[sync]--;
- if (flags & REQ_ELVPRIV)
+ if (rq_flags & RQF_ELVPRIV)
q->nr_rqs_elvpriv--;
__freed_request(rl, sync);
struct io_cq *icq = NULL;
const bool is_sync = rw_is_sync(op, op_flags) != 0;
int may_queue;
+ req_flags_t rq_flags = RQF_ALLOCED;
if (unlikely(blk_queue_dying(q)))
return ERR_PTR(-ENODEV);
/*
* Decide whether the new request will be managed by elevator. If
- * so, mark @op_flags and increment elvpriv. Non-zero elvpriv will
+ * so, mark @rq_flags and increment elvpriv. Non-zero elvpriv will
* prevent the current elevator from being destroyed until the new
* request is freed. This guarantees icq's won't be destroyed and
* makes creating new ones safe.
* it will be created after releasing queue_lock.
*/
if (blk_rq_should_init_elevator(bio) && !blk_queue_bypass(q)) {
- op_flags |= REQ_ELVPRIV;
+ rq_flags |= RQF_ELVPRIV;
q->nr_rqs_elvpriv++;
if (et->icq_cache && ioc)
icq = ioc_lookup_icq(ioc, q);
}
if (blk_queue_io_stat(q))
- op_flags |= REQ_IO_STAT;
+ rq_flags |= RQF_IO_STAT;
spin_unlock_irq(q->queue_lock);
/* allocate and init request */
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- req_set_op_attrs(rq, op, op_flags | REQ_ALLOCED);
+ req_set_op_attrs(rq, op, op_flags);
+ rq->rq_flags = rq_flags;
/* init elvpriv */
- if (op_flags & REQ_ELVPRIV) {
+ if (rq_flags & RQF_ELVPRIV) {
if (unlikely(et->icq_cache && !icq)) {
if (ioc)
icq = ioc_create_icq(ioc, q, gfp_mask);
printk_ratelimited(KERN_WARNING "%s: dev %s: request aux data allocation failed, iosched may be disturbed\n",
__func__, dev_name(q->backing_dev_info.dev));
- rq->cmd_flags &= ~REQ_ELVPRIV;
+ rq->rq_flags &= ~RQF_ELVPRIV;
rq->elv.icq = NULL;
spin_lock_irq(q->queue_lock);
* queue, but this is pretty rare.
*/
spin_lock_irq(q->queue_lock);
- freed_request(rl, op, op_flags);
+ freed_request(rl, is_sync, rq_flags);
/*
* in the very unlikely event that allocation failed and no
blk_clear_rq_complete(rq);
trace_block_rq_requeue(q, rq);
- if (rq->cmd_flags & REQ_QUEUED)
+ if (rq->rq_flags & RQF_QUEUED)
blk_queue_end_tag(q, rq);
BUG_ON(blk_queued_rq(rq));
#ifdef CONFIG_PM
static void blk_pm_put_request(struct request *rq)
{
- if (rq->q->dev && !(rq->cmd_flags & REQ_PM) && !--rq->q->nr_pending)
+ if (rq->q->dev && !(rq->rq_flags & RQF_PM) && !--rq->q->nr_pending)
pm_runtime_mark_last_busy(rq->q->dev);
}
#else
*/
void __blk_put_request(struct request_queue *q, struct request *req)
{
+ req_flags_t rq_flags = req->rq_flags;
+
if (unlikely(!q))
return;
* Request may not have originated from ll_rw_blk. if not,
* it didn't come out of our reserved rq pools
*/
- if (req->cmd_flags & REQ_ALLOCED) {
- unsigned int flags = req->cmd_flags;
- int op = req_op(req);
+ if (rq_flags & RQF_ALLOCED) {
struct request_list *rl = blk_rq_rl(req);
+ bool sync = rw_is_sync(req_op(req), req->cmd_flags);
BUG_ON(!list_empty(&req->queuelist));
BUG_ON(ELV_ON_HASH(req));
blk_free_request(rl, req);
- freed_request(rl, op, flags);
+ freed_request(rl, sync, rq_flags);
blk_put_rl(rl);
}
}
unsigned int bytes = 0;
struct bio *bio;
- if (!(rq->cmd_flags & REQ_MIXED_MERGE))
+ if (!(rq->rq_flags & RQF_MIXED_MERGE))
return blk_rq_bytes(rq);
/*
* normal IO on queueing nor completion. Accounting the
* containing request is enough.
*/
- if (blk_do_io_stat(req) && !(req->cmd_flags & REQ_FLUSH_SEQ)) {
+ if (blk_do_io_stat(req) && !(req->rq_flags & RQF_FLUSH_SEQ)) {
unsigned long duration = jiffies - req->start_time;
const int rw = rq_data_dir(req);
struct hd_struct *part;
struct request *rq)
{
if (q->dev && (q->rpm_status == RPM_SUSPENDED ||
- (q->rpm_status != RPM_ACTIVE && !(rq->cmd_flags & REQ_PM))))
+ (q->rpm_status != RPM_ACTIVE && !(rq->rq_flags & RQF_PM))))
return NULL;
else
return rq;
if (!rq)
break;
- if (!(rq->cmd_flags & REQ_STARTED)) {
+ if (!(rq->rq_flags & RQF_STARTED)) {
/*
* This is the first time the device driver
* sees this request (possibly after
* requeueing). Notify IO scheduler.
*/
- if (rq->cmd_flags & REQ_SORTED)
+ if (rq->rq_flags & RQF_SORTED)
elv_activate_rq(q, rq);
/*
* it, a request that has been delayed should
* not be passed by new incoming requests
*/
- rq->cmd_flags |= REQ_STARTED;
+ rq->rq_flags |= RQF_STARTED;
trace_block_rq_issue(q, rq);
}
q->boundary_rq = NULL;
}
- if (rq->cmd_flags & REQ_DONTPREP)
+ if (rq->rq_flags & RQF_DONTPREP)
break;
if (q->dma_drain_size && blk_rq_bytes(rq)) {
/*
* the request may have been (partially) prepped.
* we need to keep this request in the front to
- * avoid resource deadlock. REQ_STARTED will
+ * avoid resource deadlock. RQF_STARTED will
* prevent other fs requests from passing this one.
*/
if (q->dma_drain_size && blk_rq_bytes(rq) &&
- !(rq->cmd_flags & REQ_DONTPREP)) {
+ !(rq->rq_flags & RQF_DONTPREP)) {
/*
* remove the space for the drain we added
* so that we don't add it again
} else if (ret == BLKPREP_KILL || ret == BLKPREP_INVALID) {
int err = (ret == BLKPREP_INVALID) ? -EREMOTEIO : -EIO;
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
/*
* Mark this request as started so we don't trigger
* any debug logic in the end I/O path.
req->errors = 0;
if (error && req->cmd_type == REQ_TYPE_FS &&
- !(req->cmd_flags & REQ_QUIET)) {
+ !(req->rq_flags & RQF_QUIET)) {
char *error_type;
switch (error) {
req->__sector += total_bytes >> 9;
/* mixed attributes always follow the first bio */
- if (req->cmd_flags & REQ_MIXED_MERGE) {
+ if (req->rq_flags & RQF_MIXED_MERGE) {
req->cmd_flags &= ~REQ_FAILFAST_MASK;
req->cmd_flags |= req->bio->bi_opf & REQ_FAILFAST_MASK;
}
{
struct request_queue *q = req->q;
- req->cmd_flags &= ~REQ_DONTPREP;
+ req->rq_flags &= ~RQF_DONTPREP;
if (q->unprep_rq_fn)
q->unprep_rq_fn(q, req);
}
*/
void blk_finish_request(struct request *req, int error)
{
- if (req->cmd_flags & REQ_QUEUED)
+ if (req->rq_flags & RQF_QUEUED)
blk_queue_end_tag(req->q, req);
BUG_ON(blk_queued_rq(req));
blk_delete_timer(req);
- if (req->cmd_flags & REQ_DONTPREP)
+ if (req->rq_flags & RQF_DONTPREP)
blk_unprep_request(req);
blk_account_io_done(req);
spin_lock_irq(q->queue_lock);
if (unlikely(blk_queue_dying(q))) {
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
rq->errors = -ENXIO;
__blk_end_request_all(rq, rq->errors);
spin_unlock_irq(q->queue_lock);
* Once while executing DATA and again after the whole sequence is
* complete. The first completion updates the contained bio but doesn't
* finish it so that the bio submitter is notified only after the whole
- * sequence is complete. This is implemented by testing REQ_FLUSH_SEQ in
+ * sequence is complete. This is implemented by testing RQF_FLUSH_SEQ in
* req_bio_endio().
*
* The above peculiarity requires that each FLUSH/FUA request has only one
rq->bio = rq->biotail;
/* make @rq a normal request */
- rq->cmd_flags &= ~REQ_FLUSH_SEQ;
+ rq->rq_flags &= ~RQF_FLUSH_SEQ;
rq->end_io = rq->flush.saved_end_io;
}
}
flush_rq->cmd_type = REQ_TYPE_FS;
- req_set_op_attrs(flush_rq, REQ_OP_FLUSH, WRITE_FLUSH | REQ_FLUSH_SEQ);
+ req_set_op_attrs(flush_rq, REQ_OP_FLUSH, WRITE_FLUSH);
+ flush_rq->rq_flags |= RQF_FLUSH_SEQ;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
*/
memset(&rq->flush, 0, sizeof(rq->flush));
INIT_LIST_HEAD(&rq->flush.list);
- rq->cmd_flags |= REQ_FLUSH_SEQ;
+ rq->rq_flags |= RQF_FLUSH_SEQ;
rq->flush.saved_end_io = rq->end_io; /* Usually NULL */
if (q->mq_ops) {
rq->end_io = mq_flush_data_end_io;
} while (iov_iter_count(&i));
if (!bio_flagged(bio, BIO_USER_MAPPED))
- rq->cmd_flags |= REQ_COPY_USER;
+ rq->rq_flags |= RQF_COPY_USER;
return 0;
unmap_rq:
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
if (do_copy)
- rq->cmd_flags |= REQ_COPY_USER;
+ rq->rq_flags |= RQF_COPY_USER;
ret = blk_rq_append_bio(rq, bio);
if (unlikely(ret)) {
if (rq->bio)
nsegs = __blk_bios_map_sg(q, rq->bio, sglist, &sg);
- if (unlikely(rq->cmd_flags & REQ_COPY_USER) &&
+ if (unlikely(rq->rq_flags & RQF_COPY_USER) &&
(blk_rq_bytes(rq) & q->dma_pad_mask)) {
unsigned int pad_len =
(q->dma_pad_mask & ~blk_rq_bytes(rq)) + 1;
unsigned int ff = rq->cmd_flags & REQ_FAILFAST_MASK;
struct bio *bio;
- if (rq->cmd_flags & REQ_MIXED_MERGE)
+ if (rq->rq_flags & RQF_MIXED_MERGE)
return;
/*
(bio->bi_opf & REQ_FAILFAST_MASK) != ff);
bio->bi_opf |= ff;
}
- rq->cmd_flags |= REQ_MIXED_MERGE;
+ rq->rq_flags |= RQF_MIXED_MERGE;
}
static void blk_account_io_merge(struct request *req)
* makes sure that all involved bios have mixable attributes
* set properly.
*/
- if ((req->cmd_flags | next->cmd_flags) & REQ_MIXED_MERGE ||
+ if (((req->rq_flags | next->rq_flags) & RQF_MIXED_MERGE) ||
(req->cmd_flags & REQ_FAILFAST_MASK) !=
(next->cmd_flags & REQ_FAILFAST_MASK)) {
blk_rq_set_mixed_merge(req);
struct request *rq, int op,
unsigned int op_flags)
{
- if (blk_queue_io_stat(q))
- op_flags |= REQ_IO_STAT;
-
INIT_LIST_HEAD(&rq->queuelist);
/* csd/requeue_work/fifo_time is initialized before use */
rq->q = q;
rq->mq_ctx = ctx;
req_set_op_attrs(rq, op, op_flags);
+ if (blk_queue_io_stat(q))
+ rq->rq_flags |= RQF_IO_STAT;
/* do not touch atomic flags, it needs atomic ops against the timer */
rq->cpu = -1;
INIT_HLIST_NODE(&rq->hash);
rq = data->hctx->tags->rqs[tag];
if (blk_mq_tag_busy(data->hctx)) {
- rq->cmd_flags = REQ_MQ_INFLIGHT;
+ rq->rq_flags = RQF_MQ_INFLIGHT;
atomic_inc(&data->hctx->nr_active);
}
const int tag = rq->tag;
struct request_queue *q = rq->q;
- if (rq->cmd_flags & REQ_MQ_INFLIGHT)
+ if (rq->rq_flags & RQF_MQ_INFLIGHT)
atomic_dec(&hctx->nr_active);
- rq->cmd_flags = 0;
+ rq->rq_flags = 0;
clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
blk_mq_put_tag(hctx, ctx, tag);
spin_unlock_irqrestore(&q->requeue_lock, flags);
list_for_each_entry_safe(rq, next, &rq_list, queuelist) {
- if (!(rq->cmd_flags & REQ_SOFTBARRIER))
+ if (!(rq->rq_flags & RQF_SOFTBARRIER))
continue;
- rq->cmd_flags &= ~REQ_SOFTBARRIER;
+ rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
blk_mq_insert_request(rq, true, false, false);
}
* We abuse this flag that is otherwise used by the I/O scheduler to
* request head insertation from the workqueue.
*/
- BUG_ON(rq->cmd_flags & REQ_SOFTBARRIER);
+ BUG_ON(rq->rq_flags & RQF_SOFTBARRIER);
spin_lock_irqsave(&q->requeue_lock, flags);
if (at_head) {
- rq->cmd_flags |= REQ_SOFTBARRIER;
+ rq->rq_flags |= RQF_SOFTBARRIER;
list_add(&rq->queuelist, &q->requeue_list);
} else {
list_add_tail(&rq->queuelist, &q->requeue_list);
BUG_ON(tag >= bqt->real_max_depth);
list_del_init(&rq->queuelist);
- rq->cmd_flags &= ~REQ_QUEUED;
+ rq->rq_flags &= ~RQF_QUEUED;
rq->tag = -1;
if (unlikely(bqt->tag_index[tag] == NULL))
unsigned max_depth;
int tag;
- if (unlikely((rq->cmd_flags & REQ_QUEUED))) {
+ if (unlikely((rq->rq_flags & RQF_QUEUED))) {
printk(KERN_ERR
"%s: request %p for device [%s] already tagged %d",
__func__, rq,
*/
bqt->next_tag = (tag + 1) % bqt->max_depth;
- rq->cmd_flags |= REQ_QUEUED;
+ rq->rq_flags |= RQF_QUEUED;
rq->tag = tag;
bqt->tag_index[tag] = rq;
blk_start_request(rq);
/*
* Internal elevator interface
*/
-#define ELV_ON_HASH(rq) ((rq)->cmd_flags & REQ_HASHED)
+#define ELV_ON_HASH(rq) ((rq)->rq_flags & RQF_HASHED)
void blk_insert_flush(struct request *rq);
static inline int blk_do_io_stat(struct request *rq)
{
return rq->rq_disk &&
- (rq->cmd_flags & REQ_IO_STAT) &&
+ (rq->rq_flags & RQF_IO_STAT) &&
(rq->cmd_type == REQ_TYPE_FS);
}
static inline void __elv_rqhash_del(struct request *rq)
{
hash_del(&rq->hash);
- rq->cmd_flags &= ~REQ_HASHED;
+ rq->rq_flags &= ~RQF_HASHED;
}
static void elv_rqhash_del(struct request_queue *q, struct request *rq)
BUG_ON(ELV_ON_HASH(rq));
hash_add(e->hash, &rq->hash, rq_hash_key(rq));
- rq->cmd_flags |= REQ_HASHED;
+ rq->rq_flags |= RQF_HASHED;
}
static void elv_rqhash_reposition(struct request_queue *q, struct request *rq)
{
sector_t boundary;
struct list_head *entry;
- int stop_flags;
if (q->last_merge == rq)
q->last_merge = NULL;
q->nr_sorted--;
boundary = q->end_sector;
- stop_flags = REQ_SOFTBARRIER | REQ_STARTED;
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
break;
if (rq_data_dir(rq) != rq_data_dir(pos))
break;
- if (pos->cmd_flags & stop_flags)
+ if (pos->rq_flags & (RQF_STARTED | RQF_SOFTBARRIER))
break;
if (blk_rq_pos(rq) >= boundary) {
if (blk_rq_pos(pos) < boundary)
struct request *next)
{
struct elevator_queue *e = q->elevator;
- const int next_sorted = next->cmd_flags & REQ_SORTED;
+ const int next_sorted = next->rq_flags & RQF_SORTED;
if (next_sorted && e->type->ops.elevator_merge_req_fn)
e->type->ops.elevator_merge_req_fn(q, rq, next);
#ifdef CONFIG_PM
static void blk_pm_requeue_request(struct request *rq)
{
- if (rq->q->dev && !(rq->cmd_flags & REQ_PM))
+ if (rq->q->dev && !(rq->rq_flags & RQF_PM))
rq->q->nr_pending--;
}
static void blk_pm_add_request(struct request_queue *q, struct request *rq)
{
- if (q->dev && !(rq->cmd_flags & REQ_PM) && q->nr_pending++ == 0 &&
+ if (q->dev && !(rq->rq_flags & RQF_PM) && q->nr_pending++ == 0 &&
(q->rpm_status == RPM_SUSPENDED || q->rpm_status == RPM_SUSPENDING))
pm_request_resume(q->dev);
}
*/
if (blk_account_rq(rq)) {
q->in_flight[rq_is_sync(rq)]--;
- if (rq->cmd_flags & REQ_SORTED)
+ if (rq->rq_flags & RQF_SORTED)
elv_deactivate_rq(q, rq);
}
- rq->cmd_flags &= ~REQ_STARTED;
+ rq->rq_flags &= ~RQF_STARTED;
blk_pm_requeue_request(rq);
rq->q = q;
- if (rq->cmd_flags & REQ_SOFTBARRIER) {
+ if (rq->rq_flags & RQF_SOFTBARRIER) {
/* barriers are scheduling boundary, update end_sector */
if (rq->cmd_type == REQ_TYPE_FS) {
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
}
- } else if (!(rq->cmd_flags & REQ_ELVPRIV) &&
+ } else if (!(rq->rq_flags & RQF_ELVPRIV) &&
(where == ELEVATOR_INSERT_SORT ||
where == ELEVATOR_INSERT_SORT_MERGE))
where = ELEVATOR_INSERT_BACK;
switch (where) {
case ELEVATOR_INSERT_REQUEUE:
case ELEVATOR_INSERT_FRONT:
- rq->cmd_flags |= REQ_SOFTBARRIER;
+ rq->rq_flags |= RQF_SOFTBARRIER;
list_add(&rq->queuelist, &q->queue_head);
break;
case ELEVATOR_INSERT_BACK:
- rq->cmd_flags |= REQ_SOFTBARRIER;
+ rq->rq_flags |= RQF_SOFTBARRIER;
elv_drain_elevator(q);
list_add_tail(&rq->queuelist, &q->queue_head);
/*
break;
case ELEVATOR_INSERT_SORT:
BUG_ON(rq->cmd_type != REQ_TYPE_FS);
- rq->cmd_flags |= REQ_SORTED;
+ rq->rq_flags |= RQF_SORTED;
q->nr_sorted++;
if (rq_mergeable(rq)) {
elv_rqhash_add(q, rq);
break;
case ELEVATOR_INSERT_FLUSH:
- rq->cmd_flags |= REQ_SOFTBARRIER;
+ rq->rq_flags |= RQF_SOFTBARRIER;
blk_insert_flush(rq);
break;
default:
*/
if (blk_account_rq(rq)) {
q->in_flight[rq_is_sync(rq)]--;
- if ((rq->cmd_flags & REQ_SORTED) &&
+ if ((rq->rq_flags & RQF_SORTED) &&
e->type->ops.elevator_completed_req_fn)
e->type->ops.elevator_completed_req_fn(q, rq);
}
rq->timeout = 60*HZ;
if (cgc->quiet)
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
blk_execute_rq(rq->q, pd->bdev->bd_disk, rq, 0);
if (rq->errors)
sense_rq->cmd[0] = GPCMD_REQUEST_SENSE;
sense_rq->cmd[4] = cmd_len;
sense_rq->cmd_type = REQ_TYPE_ATA_SENSE;
- sense_rq->cmd_flags |= REQ_PREEMPT;
+ sense_rq->rq_flags |= RQF_PREEMPT;
if (drive->media == ide_tape)
sense_rq->cmd[13] = REQ_IDETAPE_PC1;
wait = ATAPI_WAIT_PC;
break;
default:
- if (!(rq->cmd_flags & REQ_QUIET))
+ if (!(rq->rq_flags & RQF_QUIET))
printk(KERN_INFO PFX "cmd 0x%x timed out\n",
rq->cmd[0]);
wait = 0;
}
if (dev_is_idecd(drive) && rq->cmd_type == REQ_TYPE_ATA_PC)
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
return 1;
}
struct request_sense *sense = &drive->sense_data;
int log = 0;
- if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
+ if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
return 0;
ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
* (probably while trying to recover from a former error).
* Just give up.
*/
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
return 2;
}
cdrom_saw_media_change(drive);
if (rq->cmd_type == REQ_TYPE_FS &&
- !(rq->cmd_flags & REQ_QUIET))
+ !(rq->rq_flags & RQF_QUIET))
printk(KERN_ERR PFX "%s: tray open\n",
drive->name);
}
* No point in retrying after an illegal request or data
* protect error.
*/
- if (!(rq->cmd_flags & REQ_QUIET))
+ if (!(rq->rq_flags & RQF_QUIET))
ide_dump_status(drive, "command error", stat);
do_end_request = 1;
break;
* No point in re-trying a zillion times on a bad sector.
* If we got here the error is not correctable.
*/
- if (!(rq->cmd_flags & REQ_QUIET))
+ if (!(rq->rq_flags & RQF_QUIET))
ide_dump_status(drive, "media error "
"(bad sector)", stat);
do_end_request = 1;
break;
case BLANK_CHECK:
/* disk appears blank? */
- if (!(rq->cmd_flags & REQ_QUIET))
+ if (!(rq->rq_flags & RQF_QUIET))
ide_dump_status(drive, "media error (blank)",
stat);
do_end_request = 1;
}
if (rq->cmd_type != REQ_TYPE_FS) {
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
do_end_request = 1;
}
int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
int write, void *buffer, unsigned *bufflen,
struct request_sense *sense, int timeout,
- unsigned int cmd_flags)
+ req_flags_t rq_flags)
{
struct cdrom_info *info = drive->driver_data;
struct request_sense local_sense;
int retries = 10;
- unsigned int flags = 0;
+ req_flags_t flags = 0;
if (!sense)
sense = &local_sense;
ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
- "cmd_flags: 0x%x",
- cmd[0], write, timeout, cmd_flags);
+ "rq_flags: 0x%x",
+ cmd[0], write, timeout, rq_flags);
/* start of retry loop */
do {
memcpy(rq->cmd, cmd, BLK_MAX_CDB);
rq->cmd_type = REQ_TYPE_ATA_PC;
rq->sense = sense;
- rq->cmd_flags |= cmd_flags;
+ rq->rq_flags |= rq_flags;
rq->timeout = timeout;
if (buffer) {
error = blk_rq_map_kern(drive->queue, rq, buffer,
if (buffer)
*bufflen = rq->resid_len;
- flags = rq->cmd_flags;
+ flags = rq->rq_flags;
blk_put_request(rq);
/*
* FIXME: we should probably abort/retry or something in case of
* failure.
*/
- if (flags & REQ_FAILED) {
+ if (flags & RQF_FAILED) {
/*
* The request failed. Retry if it was due to a unit
* attention status (usually means media was changed).
}
/* end of retry loop */
- } while ((flags & REQ_FAILED) && retries >= 0);
+ } while ((flags & RQF_FAILED) && retries >= 0);
/* return an error if the command failed */
- return (flags & REQ_FAILED) ? -EIO : 0;
+ return (flags & RQF_FAILED) ? -EIO : 0;
}
/*
"(%u bytes)\n", drive->name, __func__,
cmd->nleft);
if (!write)
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
uptodate = 0;
}
} else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
}
if (!uptodate)
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
}
goto out_end;
}
rq->cmd[0], rq->cmd_type);
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
else
- rq->cmd_flags &= ~REQ_FAILED;
+ rq->rq_flags &= ~RQF_FAILED;
drive->dma = 0;
*/
cmd[7] = cdi->sanyo_slot % 3;
- return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
+ return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, RQF_QUIET);
}
static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
cmd[0] = GPCMD_READ_CDVD_CAPACITY;
stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
- REQ_QUIET);
+ RQF_QUIET);
if (stat)
return stat;
if (msf_flag)
cmd[1] = 2;
- return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
+ return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, RQF_QUIET);
}
/* Try to read the entire TOC for the disk into our internal buffer. */
/* ide-cd.c functions used by ide-cd_ioctl.c */
int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
- unsigned *, struct request_sense *, int, unsigned int);
+ unsigned *, struct request_sense *, int, req_flags_t);
int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
void ide_cdrom_update_speed(ide_drive_t *, u8 *);
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq->cmd_type = REQ_TYPE_DRV_PRIV;
- rq->cmd_flags = REQ_QUIET;
+ rq->rq_flags = RQF_QUIET;
ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
blk_put_request(rq);
/*
struct packet_command *cgc)
{
ide_drive_t *drive = cdi->handle;
- unsigned int flags = 0;
+ req_flags_t flags = 0;
unsigned len = cgc->buflen;
if (cgc->timeout <= 0)
memset(cgc->sense, 0, sizeof(struct request_sense));
if (cgc->quiet)
- flags |= REQ_QUIET;
+ flags |= RQF_QUIET;
cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
cgc->data_direction == CGC_DATA_WRITE,
{
ide_startstop_t startstop;
- BUG_ON(!(rq->cmd_flags & REQ_STARTED));
+ BUG_ON(!(rq->rq_flags & RQF_STARTED));
#ifdef DEBUG
printk("%s: start_request: current=0x%08lx\n",
/* bail early if we've exceeded max_failures */
if (drive->max_failures && (drive->failures > drive->max_failures)) {
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
goto kill_rq;
}
*/
if ((drive->dev_flags & IDE_DFLAG_BLOCKED) &&
ata_pm_request(rq) == 0 &&
- (rq->cmd_flags & REQ_PREEMPT) == 0) {
+ (rq->rq_flags & RQF_PREEMPT) == 0) {
/* there should be no pending command at this point */
ide_unlock_port(hwif);
goto plug_device;
spin_lock_irq(q->queue_lock);
if (unlikely(blk_queue_dying(q))) {
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
rq->errors = -ENXIO;
__blk_end_request_all(rq, rq->errors);
spin_unlock_irq(q->queue_lock);
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
rq->cmd_type = REQ_TYPE_ATA_PM_RESUME;
- rq->cmd_flags |= REQ_PREEMPT;
+ rq->rq_flags |= RQF_PREEMPT;
rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
if (!rq->q->mq_ops) {
rq->special = NULL;
- rq->cmd_flags &= ~REQ_DONTPREP;
+ rq->rq_flags &= ~RQF_DONTPREP;
}
if (clone)
return;
}
- if (rq->cmd_flags & REQ_FAILED)
+ if (rq->rq_flags & RQF_FAILED)
mapped = false;
dm_done(clone, tio->error, mapped);
*/
static void dm_kill_unmapped_request(struct request *rq, int error)
{
- rq->cmd_flags |= REQ_FAILED;
+ rq->rq_flags |= RQF_FAILED;
dm_complete_request(rq, error);
}
* For just cleaning up the information of the queue in which
* the clone was dispatched.
* The clone is *NOT* freed actually here because it is alloced
- * from dm own mempool (REQ_ALLOCED isn't set).
+ * from dm own mempool (RQF_ALLOCED isn't set).
*/
__blk_put_request(clone->q, clone);
}
int r;
if (blk_queue_io_stat(clone->q))
- clone->cmd_flags |= REQ_IO_STAT;
+ clone->rq_flags |= RQF_IO_STAT;
clone->start_time = jiffies;
r = blk_insert_cloned_request(clone->q, clone);
return BLKPREP_DEFER;
rq->special = tio;
- rq->cmd_flags |= REQ_DONTPREP;
+ rq->rq_flags |= RQF_DONTPREP;
return BLKPREP_OK;
}
blk_dump_rq_flags(req, "MS unsupported request");
return BLKPREP_KILL;
}
- req->cmd_flags |= REQ_DONTPREP;
+ req->rq_flags |= RQF_DONTPREP;
return BLKPREP_OK;
}
return BLKPREP_KILL;
}
- req->cmd_flags |= REQ_DONTPREP;
+ req->rq_flags |= RQF_DONTPREP;
return BLKPREP_OK;
}
mmc_blk_abort_packed_req(mq_rq);
} else {
if (mmc_card_removed(card))
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
while (ret)
ret = blk_end_request(req, -EIO,
blk_rq_cur_bytes(req));
start_new_req:
if (rqc) {
if (mmc_card_removed(card)) {
- rqc->cmd_flags |= REQ_QUIET;
+ rqc->rq_flags |= RQF_QUIET;
blk_end_request_all(rqc, -EIO);
} else {
/*
if (mq && (mmc_card_removed(mq->card) || mmc_access_rpmb(mq)))
return BLKPREP_KILL;
- req->cmd_flags |= REQ_DONTPREP;
+ req->rq_flags |= RQF_DONTPREP;
return BLKPREP_OK;
}
if (!mq) {
while ((req = blk_fetch_request(q)) != NULL) {
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
__blk_end_request_all(req, -EIO);
}
return;
iod->nents = 0;
iod->length = size;
- if (!(rq->cmd_flags & REQ_DONTPREP)) {
+ if (!(rq->rq_flags & RQF_DONTPREP)) {
rq->retries = 0;
- rq->cmd_flags |= REQ_DONTPREP;
+ rq->rq_flags |= RQF_DONTPREP;
}
return 0;
}
return scsi_execute_req_flags(sdev, cdb, DMA_FROM_DEVICE,
buff, bufflen, sshdr,
ALUA_FAILOVER_TIMEOUT * HZ,
- ALUA_FAILOVER_RETRIES, NULL, req_flags);
+ ALUA_FAILOVER_RETRIES, NULL,
+ req_flags, 0);
}
/*
return scsi_execute_req_flags(sdev, cdb, DMA_TO_DEVICE,
stpg_data, stpg_len,
sshdr, ALUA_FAILOVER_TIMEOUT * HZ,
- ALUA_FAILOVER_RETRIES, NULL, req_flags);
+ ALUA_FAILOVER_RETRIES, NULL,
+ req_flags, 0);
}
static struct alua_port_group *alua_find_get_pg(char *id_str, size_t id_size,
state != SCSI_ACCESS_STATE_ACTIVE &&
state != SCSI_ACCESS_STATE_LBA) {
ret = BLKPREP_KILL;
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
}
return ret;
if (h->lun_state != CLARIION_LUN_OWNED) {
ret = BLKPREP_KILL;
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
}
return ret;
if (h->path_state != HP_SW_PATH_ACTIVE) {
ret = BLKPREP_KILL;
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
}
return ret;
if (h->state != RDAC_STATE_ACTIVE) {
ret = BLKPREP_KILL;
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
}
return ret;
}
or->request = req;
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
req->timeout = or->timeout;
req->retries = or->retries;
return DRIVER_ERROR << 24;
blk_rq_set_block_pc(req);
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
SRpnt->bio = NULL;
req->cmd_len = COMMAND_SIZE(req->cmd[0]);
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
req->timeout = 10 * HZ;
req->retries = 5;
{
__scsi_queue_insert(cmd, reason, 1);
}
-/**
- * scsi_execute - insert request and wait for the result
- * @sdev: scsi device
- * @cmd: scsi command
- * @data_direction: data direction
- * @buffer: data buffer
- * @bufflen: len of buffer
- * @sense: optional sense buffer
- * @timeout: request timeout in seconds
- * @retries: number of times to retry request
- * @flags: or into request flags;
- * @resid: optional residual length
- *
- * returns the req->errors value which is the scsi_cmnd result
- * field.
- */
-int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
+
+static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
int data_direction, void *buffer, unsigned bufflen,
unsigned char *sense, int timeout, int retries, u64 flags,
- int *resid)
+ req_flags_t rq_flags, int *resid)
{
struct request *req;
int write = (data_direction == DMA_TO_DEVICE);
req->sense_len = 0;
req->retries = retries;
req->timeout = timeout;
- req->cmd_flags |= flags | REQ_QUIET | REQ_PREEMPT;
+ req->cmd_flags |= flags;
+ req->rq_flags |= rq_flags | RQF_QUIET | RQF_PREEMPT;
/*
* head injection *required* here otherwise quiesce won't work
return ret;
}
+
+/**
+ * scsi_execute - insert request and wait for the result
+ * @sdev: scsi device
+ * @cmd: scsi command
+ * @data_direction: data direction
+ * @buffer: data buffer
+ * @bufflen: len of buffer
+ * @sense: optional sense buffer
+ * @timeout: request timeout in seconds
+ * @retries: number of times to retry request
+ * @flags: or into request flags;
+ * @resid: optional residual length
+ *
+ * returns the req->errors value which is the scsi_cmnd result
+ * field.
+ */
+int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
+ int data_direction, void *buffer, unsigned bufflen,
+ unsigned char *sense, int timeout, int retries, u64 flags,
+ int *resid)
+{
+ return __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, sense,
+ timeout, retries, flags, 0, resid);
+}
EXPORT_SYMBOL(scsi_execute);
int scsi_execute_req_flags(struct scsi_device *sdev, const unsigned char *cmd,
int data_direction, void *buffer, unsigned bufflen,
struct scsi_sense_hdr *sshdr, int timeout, int retries,
- int *resid, u64 flags)
+ int *resid, u64 flags, req_flags_t rq_flags)
{
char *sense = NULL;
int result;
if (!sense)
return DRIVER_ERROR << 24;
}
- result = scsi_execute(sdev, cmd, data_direction, buffer, bufflen,
- sense, timeout, retries, flags, resid);
+ result = __scsi_execute(sdev, cmd, data_direction, buffer, bufflen,
+ sense, timeout, retries, flags, rq_flags, resid);
if (sshdr)
scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, sshdr);
*/
if ((sshdr.asc == 0x0) && (sshdr.ascq == 0x1d))
;
- else if (!(req->cmd_flags & REQ_QUIET))
+ else if (!(req->rq_flags & RQF_QUIET))
scsi_print_sense(cmd);
result = 0;
/* BLOCK_PC may have set error */
switch (action) {
case ACTION_FAIL:
/* Give up and fail the remainder of the request */
- if (!(req->cmd_flags & REQ_QUIET)) {
+ if (!(req->rq_flags & RQF_QUIET)) {
static DEFINE_RATELIMIT_STATE(_rs,
DEFAULT_RATELIMIT_INTERVAL,
DEFAULT_RATELIMIT_BURST);
* A new command will be prepared and issued.
*/
if (q->mq_ops) {
- cmd->request->cmd_flags &= ~REQ_DONTPREP;
+ cmd->request->rq_flags &= ~RQF_DONTPREP;
scsi_mq_uninit_cmd(cmd);
scsi_mq_requeue_cmd(cmd);
} else {
/*
* If the devices is blocked we defer normal commands.
*/
- if (!(req->cmd_flags & REQ_PREEMPT))
+ if (!(req->rq_flags & RQF_PREEMPT))
ret = BLKPREP_DEFER;
break;
default:
* special commands. In particular any user initiated
* command is not allowed.
*/
- if (!(req->cmd_flags & REQ_PREEMPT))
+ if (!(req->rq_flags & RQF_PREEMPT))
ret = BLKPREP_KILL;
break;
}
blk_delay_queue(q, SCSI_QUEUE_DELAY);
break;
default:
- req->cmd_flags |= REQ_DONTPREP;
+ req->rq_flags |= RQF_DONTPREP;
}
return ret;
* we add the dev to the starved list so it eventually gets
* a run when a tag is freed.
*/
- if (blk_queue_tagged(q) && !(req->cmd_flags & REQ_QUEUED)) {
+ if (blk_queue_tagged(q) && !(req->rq_flags & RQF_QUEUED)) {
spin_lock_irq(shost->host_lock);
if (list_empty(&sdev->starved_entry))
list_add_tail(&sdev->starved_entry,
goto out_dec_target_busy;
- if (!(req->cmd_flags & REQ_DONTPREP)) {
+ if (!(req->rq_flags & RQF_DONTPREP)) {
ret = prep_to_mq(scsi_mq_prep_fn(req));
if (ret)
goto out_dec_host_busy;
- req->cmd_flags |= REQ_DONTPREP;
+ req->rq_flags |= RQF_DONTPREP;
} else {
blk_mq_start_request(req);
}
* we hit an error, as we will never see this command
* again.
*/
- if (req->cmd_flags & REQ_DONTPREP)
+ if (req->rq_flags & RQF_DONTPREP)
scsi_mq_uninit_cmd(cmd);
break;
default:
*/
res = scsi_execute_req_flags(sdp, cmd, DMA_NONE, NULL, 0,
&sshdr, timeout, SD_MAX_RETRIES,
- NULL, REQ_PM);
+ NULL, 0, RQF_PM);
if (res == 0)
break;
}
good_bytes = 0;
req->__data_len = blk_rq_bytes(req);
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
}
}
}
return -ENODEV;
res = scsi_execute_req_flags(sdp, cmd, DMA_NONE, NULL, 0, &sshdr,
- SD_TIMEOUT, SD_MAX_RETRIES, NULL, REQ_PM);
+ SD_TIMEOUT, SD_MAX_RETRIES, NULL, 0, RQF_PM);
if (res) {
sd_print_result(sdkp, "Start/Stop Unit failed", res);
if (driver_byte(res) & DRIVER_SENSE)
* this case, so be quiet about the error.
*/
if (req_op(rq) == REQ_OP_ZONE_RESET)
- rq->cmd_flags |= REQ_QUIET;
+ rq->rq_flags |= RQF_QUIET;
break;
case 0x21:
/*
return DRIVER_ERROR << 24;
blk_rq_set_block_pc(req);
- req->cmd_flags |= REQ_QUIET;
+ req->rq_flags |= RQF_QUIET;
mdata->null_mapped = 1;
ret = scsi_execute_req_flags(sdp, cmd, DMA_FROM_DEVICE, buffer,
SCSI_SENSE_BUFFERSIZE, NULL,
- msecs_to_jiffies(1000), 3, NULL, REQ_PM);
+ msecs_to_jiffies(1000), 3, NULL, 0, RQF_PM);
if (ret)
pr_err("%s: failed with err %d\n", __func__, ret);
/*
* Current function would be generally called from the power management
- * callbacks hence set the REQ_PM flag so that it doesn't resume the
+ * callbacks hence set the RQF_PM flag so that it doesn't resume the
* already suspended childs.
*/
ret = scsi_execute_req_flags(sdp, cmd, DMA_NONE, NULL, 0, &sshdr,
- START_STOP_TIMEOUT, 0, NULL, REQ_PM);
+ START_STOP_TIMEOUT, 0, NULL, 0, RQF_PM);
if (ret) {
sdev_printk(KERN_WARNING, sdp,
"START_STOP failed for power mode: %d, result %x\n",
__REQ_PREFLUSH, /* request for cache flush */
__REQ_RAHEAD, /* read ahead, can fail anytime */
- /* request only flags */
- __REQ_SORTED, /* elevator knows about this request */
- __REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
- __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 and also
- for requests for which the SCSI "quiesce"
- state must be ignored. */
- __REQ_ALLOCED, /* request came from our alloc pool */
- __REQ_COPY_USER, /* contains copies of user pages */
- __REQ_FLUSH_SEQ, /* request for flush sequence */
- __REQ_IO_STAT, /* account I/O stat */
- __REQ_MIXED_MERGE, /* merge of different types, fail separately */
- __REQ_PM, /* runtime pm request */
- __REQ_HASHED, /* on IO scheduler merge hash */
- __REQ_MQ_INFLIGHT, /* track inflight for MQ */
__REQ_NR_BITS, /* stops here */
};
/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
- (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_PREFLUSH | REQ_FUA | REQ_FLUSH_SEQ)
+ (REQ_NOMERGE | REQ_PREFLUSH | REQ_FUA)
#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
-#define REQ_SORTED (1ULL << __REQ_SORTED)
-#define REQ_SOFTBARRIER (1ULL << __REQ_SOFTBARRIER)
#define REQ_FUA (1ULL << __REQ_FUA)
#define REQ_NOMERGE (1ULL << __REQ_NOMERGE)
-#define REQ_STARTED (1ULL << __REQ_STARTED)
-#define REQ_DONTPREP (1ULL << __REQ_DONTPREP)
-#define REQ_QUEUED (1ULL << __REQ_QUEUED)
-#define REQ_ELVPRIV (1ULL << __REQ_ELVPRIV)
-#define REQ_FAILED (1ULL << __REQ_FAILED)
-#define REQ_QUIET (1ULL << __REQ_QUIET)
-#define REQ_PREEMPT (1ULL << __REQ_PREEMPT)
-#define REQ_ALLOCED (1ULL << __REQ_ALLOCED)
-#define REQ_COPY_USER (1ULL << __REQ_COPY_USER)
#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
-#define REQ_FLUSH_SEQ (1ULL << __REQ_FLUSH_SEQ)
-#define REQ_IO_STAT (1ULL << __REQ_IO_STAT)
-#define REQ_MIXED_MERGE (1ULL << __REQ_MIXED_MERGE)
-#define REQ_PM (1ULL << __REQ_PM)
-#define REQ_HASHED (1ULL << __REQ_HASHED)
-#define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT)
enum req_op {
REQ_OP_READ,
REQ_TYPE_DRV_PRIV, /* driver defined types from here */
};
+/*
+ * request flags */
+typedef __u32 __bitwise req_flags_t;
+
+/* elevator knows about this request */
+#define RQF_SORTED ((__force req_flags_t)(1 << 0))
+/* drive already may have started this one */
+#define RQF_STARTED ((__force req_flags_t)(1 << 1))
+/* uses tagged queueing */
+#define RQF_QUEUED ((__force req_flags_t)(1 << 2))
+/* may not be passed by ioscheduler */
+#define RQF_SOFTBARRIER ((__force req_flags_t)(1 << 3))
+/* request for flush sequence */
+#define RQF_FLUSH_SEQ ((__force req_flags_t)(1 << 4))
+/* merge of different types, fail separately */
+#define RQF_MIXED_MERGE ((__force req_flags_t)(1 << 5))
+/* track inflight for MQ */
+#define RQF_MQ_INFLIGHT ((__force req_flags_t)(1 << 6))
+/* don't call prep for this one */
+#define RQF_DONTPREP ((__force req_flags_t)(1 << 7))
+/* set for "ide_preempt" requests and also for requests for which the SCSI
+ "quiesce" state must be ignored. */
+#define RQF_PREEMPT ((__force req_flags_t)(1 << 8))
+/* contains copies of user pages */
+#define RQF_COPY_USER ((__force req_flags_t)(1 << 9))
+/* vaguely specified driver internal error. Ignored by the block layer */
+#define RQF_FAILED ((__force req_flags_t)(1 << 10))
+/* don't warn about errors */
+#define RQF_QUIET ((__force req_flags_t)(1 << 11))
+/* elevator private data attached */
+#define RQF_ELVPRIV ((__force req_flags_t)(1 << 12))
+/* account I/O stat */
+#define RQF_IO_STAT ((__force req_flags_t)(1 << 13))
+/* request came from our alloc pool */
+#define RQF_ALLOCED ((__force req_flags_t)(1 << 14))
+/* runtime pm request */
+#define RQF_PM ((__force req_flags_t)(1 << 15))
+/* on IO scheduler merge hash */
+#define RQF_HASHED ((__force req_flags_t)(1 << 16))
+
+/* flags that prevent us from merging requests: */
+#define RQF_NOMERGE_FLAGS \
+ (RQF_STARTED | RQF_SOFTBARRIER | RQF_FLUSH_SEQ)
+
#define BLK_MAX_CDB 16
/*
int cpu;
unsigned cmd_type;
u64 cmd_flags;
+ req_flags_t rq_flags;
unsigned long atomic_flags;
/* the following two fields are internal, NEVER access directly */
REQ_FAILFAST_DRIVER))
#define blk_account_rq(rq) \
- (((rq)->cmd_flags & REQ_STARTED) && \
+ (((rq)->rq_flags & RQF_STARTED) && \
((rq)->cmd_type == REQ_TYPE_FS))
#define blk_rq_cpu_valid(rq) ((rq)->cpu != -1)
if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
return false;
+ if (rq->rq_flags & RQF_NOMERGE_FLAGS)
+ return false;
return true;
}
extern int scsi_execute_req_flags(struct scsi_device *sdev,
const unsigned char *cmd, int data_direction, void *buffer,
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
- int retries, int *resid, u64 flags);
+ int retries, int *resid, u64 flags, req_flags_t rq_flags);
static inline int scsi_execute_req(struct scsi_device *sdev,
const unsigned char *cmd, int data_direction, void *buffer,
unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
int retries, int *resid)
{
return scsi_execute_req_flags(sdev, cmd, data_direction, buffer,
- bufflen, sshdr, timeout, retries, resid, 0);
+ bufflen, sshdr, timeout, retries, resid, 0, 0);
}
extern void sdev_disable_disk_events(struct scsi_device *sdev);
extern void sdev_enable_disk_events(struct scsi_device *sdev);
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