struct request_list *rl;
}
-See the rq_flag_bits definitions for an explanation of the various flags
-available. Some bits are used by the block layer or i/o scheduler.
+See the req_ops and req_flag_bits definitions for an explanation of the various
+flags available. Some bits are used by the block layer or i/o scheduler.
The behaviour of the various sector counts are almost the same as before,
except that since we have multi-segment bios, current_nr_sectors refers
/**
* __get_request - get a free request
* @rl: request list to allocate from
- * @op: REQ_OP_READ/REQ_OP_WRITE
- * @op_flags: rq_flag_bits
+ * @op: operation and flags
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *__get_request(struct request_list *rl, int op,
- int op_flags, struct bio *bio,
- gfp_t gfp_mask)
+static struct request *__get_request(struct request_list *rl, unsigned int op,
+ struct bio *bio, gfp_t gfp_mask)
{
struct request_queue *q = rl->q;
struct request *rq;
struct elevator_type *et = q->elevator->type;
struct io_context *ioc = rq_ioc(bio);
struct io_cq *icq = NULL;
- const bool is_sync = rw_is_sync(op, op_flags) != 0;
+ const bool is_sync = op_is_sync(op);
int may_queue;
req_flags_t rq_flags = RQF_ALLOCED;
if (unlikely(blk_queue_dying(q)))
return ERR_PTR(-ENODEV);
- may_queue = elv_may_queue(q, op, op_flags);
+ may_queue = elv_may_queue(q, op);
if (may_queue == ELV_MQUEUE_NO)
goto rq_starved;
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- req_set_op_attrs(rq, op, op_flags);
+ rq->cmd_flags = op;
rq->rq_flags = rq_flags;
/* init elvpriv */
/**
* get_request - get a free request
* @q: request_queue to allocate request from
- * @op: REQ_OP_READ/REQ_OP_WRITE
- * @op_flags: rq_flag_bits
+ * @op: operation and flags
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *get_request(struct request_queue *q, int op,
- int op_flags, struct bio *bio,
- gfp_t gfp_mask)
+static struct request *get_request(struct request_queue *q, unsigned int op,
+ struct bio *bio, gfp_t gfp_mask)
{
- const bool is_sync = rw_is_sync(op, op_flags) != 0;
+ const bool is_sync = op_is_sync(op);
DEFINE_WAIT(wait);
struct request_list *rl;
struct request *rq;
rl = blk_get_rl(q, bio); /* transferred to @rq on success */
retry:
- rq = __get_request(rl, op, op_flags, bio, gfp_mask);
+ rq = __get_request(rl, op, bio, gfp_mask);
if (!IS_ERR(rq))
return rq;
create_io_context(gfp_mask, q->node);
spin_lock_irq(q->queue_lock);
- rq = get_request(q, rw, 0, NULL, gfp_mask);
+ rq = get_request(q, rw, NULL, gfp_mask);
if (IS_ERR(rq)) {
spin_unlock_irq(q->queue_lock);
return rq;
*/
if (rq_flags & RQF_ALLOCED) {
struct request_list *rl = blk_rq_rl(req);
- bool sync = rw_is_sync(req_op(req), req->cmd_flags);
+ bool sync = op_is_sync(req->cmd_flags);
BUG_ON(!list_empty(&req->queuelist));
BUG_ON(ELV_ON_HASH(req));
void init_request_from_bio(struct request *req, struct bio *bio)
{
req->cmd_type = REQ_TYPE_FS;
-
- req->cmd_flags |= bio->bi_opf & REQ_COMMON_MASK;
if (bio->bi_opf & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
{
- const bool sync = !!(bio->bi_opf & REQ_SYNC);
struct blk_plug *plug;
- int el_ret, rw_flags = 0, where = ELEVATOR_INSERT_SORT;
+ int el_ret, where = ELEVATOR_INSERT_SORT;
struct request *req;
unsigned int request_count = 0;
}
get_rq:
- /*
- * This sync check and mask will be re-done in init_request_from_bio(),
- * but we need to set it earlier to expose the sync flag to the
- * rq allocator and io schedulers.
- */
- if (sync)
- rw_flags |= REQ_SYNC;
-
- /*
- * Add in META/PRIO flags, if set, before we get to the IO scheduler
- */
- rw_flags |= (bio->bi_opf & (REQ_META | REQ_PRIO));
-
/*
* Grab a free request. This is might sleep but can not fail.
* Returns with the queue unlocked.
*/
- req = get_request(q, bio_data_dir(bio), rw_flags, bio, GFP_NOIO);
+ req = get_request(q, bio->bi_opf, bio, GFP_NOIO);
if (IS_ERR(req)) {
bio->bi_error = PTR_ERR(req);
bio_endio(bio);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
- req_set_op(rq, bio_op(bio));
-
if (bio_has_data(bio))
rq->nr_phys_segments = bio_phys_segments(q, bio);
static void __blk_rq_prep_clone(struct request *dst, struct request *src)
{
dst->cpu = src->cpu;
- req_set_op_attrs(dst, req_op(src),
- (src->cmd_flags & REQ_CLONE_MASK) | REQ_NOMERGE);
+ dst->cmd_flags = src->cmd_flags | REQ_NOMERGE;
dst->cmd_type = src->cmd_type;
dst->__sector = blk_rq_pos(src);
dst->__data_len = blk_rq_bytes(src);
int __init blk_dev_init(void)
{
- BUILD_BUG_ON(__REQ_NR_BITS > 8 *
+ BUILD_BUG_ON(REQ_OP_LAST >= (1 << REQ_OP_BITS));
+ BUILD_BUG_ON(REQ_OP_BITS + REQ_FLAG_BITS > 8 *
FIELD_SIZEOF(struct request, cmd_flags));
+ BUILD_BUG_ON(REQ_OP_BITS + REQ_FLAG_BITS > 8 *
+ FIELD_SIZEOF(struct bio, bi_opf));
/* used for unplugging and affects IO latency/throughput - HIGHPRI */
kblockd_workqueue = alloc_workqueue("kblockd",
}
flush_rq->cmd_type = REQ_TYPE_FS;
- req_set_op_attrs(flush_rq, REQ_OP_FLUSH, WRITE_FLUSH);
+ flush_rq->cmd_flags = 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;
struct request_queue *q = bdev_get_queue(bdev);
struct bio *bio = *biop;
unsigned int granularity;
- enum req_op op;
+ unsigned int op;
int alignment;
sector_t bs_mask;
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))
EXPORT_SYMBOL(blk_mq_can_queue);
static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
- struct request *rq, int op,
- unsigned int op_flags)
+ struct request *rq, unsigned int op)
{
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);
+ rq->cmd_flags = op;
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->end_io_data = NULL;
rq->next_rq = NULL;
- ctx->rq_dispatched[rw_is_sync(op, op_flags)]++;
+ ctx->rq_dispatched[op_is_sync(op)]++;
}
static struct request *
-__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int op, int op_flags)
+__blk_mq_alloc_request(struct blk_mq_alloc_data *data, unsigned int op)
{
struct request *rq;
unsigned int tag;
}
rq->tag = tag;
- blk_mq_rq_ctx_init(data->q, data->ctx, rq, op, op_flags);
+ blk_mq_rq_ctx_init(data->q, data->ctx, rq, op);
return rq;
}
ctx = blk_mq_get_ctx(q);
hctx = blk_mq_map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
+ rq = __blk_mq_alloc_request(&alloc_data, rw);
blk_mq_put_ctx(ctx);
if (!rq) {
ctx = __blk_mq_get_ctx(q, cpumask_first(hctx->cpumask));
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
+ rq = __blk_mq_alloc_request(&alloc_data, rw);
if (!rq) {
ret = -EWOULDBLOCK;
goto out_queue_exit;
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
struct request *rq;
- int op = bio_data_dir(bio);
- int op_flags = 0;
blk_queue_enter_live(q);
ctx = blk_mq_get_ctx(q);
hctx = blk_mq_map_queue(q, ctx->cpu);
- if (rw_is_sync(bio_op(bio), bio->bi_opf))
- op_flags |= REQ_SYNC;
-
- trace_block_getrq(q, bio, op);
+ trace_block_getrq(q, bio, bio->bi_opf);
blk_mq_set_alloc_data(data, q, 0, ctx, hctx);
- rq = __blk_mq_alloc_request(data, op, op_flags);
+ rq = __blk_mq_alloc_request(data, bio->bi_opf);
data->hctx->queued++;
return rq;
*/
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio_op(bio), bio->bi_opf);
+ const int is_sync = op_is_sync(bio->bi_opf);
const int is_flush_fua = bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
struct blk_mq_alloc_data data;
struct request *rq;
*/
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio_op(bio), bio->bi_opf);
+ const int is_sync = op_is_sync(bio->bi_opf);
const int is_flush_fua = bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
struct blk_plug *plug;
unsigned int request_count = 0;
} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int op,
- int op_flags)
+ struct cfq_group *curr_cfqg,
+ unsigned int op)
{
- blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, 1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, 1);
cfqg_stats_end_empty_time(&cfqg->stats);
cfqg_stats_set_start_group_wait_time(cfqg, curr_cfqg);
}
#endif
}
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
- int op_flags)
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg,
+ unsigned int op)
{
- blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, -1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, -1);
}
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
- int op_flags)
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg,
+ unsigned int op)
{
- blkg_rwstat_add(&cfqg->stats.merged, op, op_flags, 1);
+ blkg_rwstat_add(&cfqg->stats.merged, op, 1);
}
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int op,
- int op_flags)
+ uint64_t start_time, uint64_t io_start_time,
+ unsigned int op)
{
struct cfqg_stats *stats = &cfqg->stats;
unsigned long long now = sched_clock();
if (time_after64(now, io_start_time))
- blkg_rwstat_add(&stats->service_time, op, op_flags,
- now - io_start_time);
+ blkg_rwstat_add(&stats->service_time, op, now - io_start_time);
if (time_after64(io_start_time, start_time))
- blkg_rwstat_add(&stats->wait_time, op, op_flags,
+ blkg_rwstat_add(&stats->wait_time, op,
io_start_time - start_time);
}
#define cfq_log_cfqg(cfqd, cfqg, fmt, args...) do {} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int op, int op_flags) { }
+ struct cfq_group *curr_cfqg, unsigned int op) { }
static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg,
uint64_t time, unsigned long unaccounted_time) { }
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
- int op_flags) { }
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
- int op_flags) { }
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg,
+ unsigned int op) { }
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg,
+ unsigned int op) { }
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int op,
- int op_flags) { }
+ uint64_t start_time, uint64_t io_start_time,
+ unsigned int op) { }
#endif /* CONFIG_CFQ_GROUP_IOSCHED */
{
elv_rb_del(&cfqq->sort_list, rq);
cfqq->queued[rq_is_sync(rq)]--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), req_op(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
cfq_add_rq_rb(rq);
cfqg_stats_update_io_add(RQ_CFQG(rq), cfqq->cfqd->serving_group,
- req_op(rq), rq->cmd_flags);
+ rq->cmd_flags);
}
static struct request *
cfq_del_rq_rb(rq);
cfqq->cfqd->rq_queued--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), req_op(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
if (rq->cmd_flags & REQ_PRIO) {
WARN_ON(!cfqq->prio_pending);
cfqq->prio_pending--;
static void cfq_bio_merged(struct request_queue *q, struct request *req,
struct bio *bio)
{
- cfqg_stats_update_io_merged(RQ_CFQG(req), bio_op(bio), bio->bi_opf);
+ cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_opf);
}
static void
if (cfqq->next_rq == next)
cfqq->next_rq = rq;
cfq_remove_request(next);
- cfqg_stats_update_io_merged(RQ_CFQG(rq), req_op(next), next->cmd_flags);
+ cfqg_stats_update_io_merged(RQ_CFQG(rq), next->cmd_flags);
cfqq = RQ_CFQQ(next);
/*
rq->fifo_time = ktime_get_ns() + cfqd->cfq_fifo_expire[rq_is_sync(rq)];
list_add_tail(&rq->queuelist, &cfqq->fifo);
cfq_add_rq_rb(rq);
- cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group, req_op(rq),
+ cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group,
rq->cmd_flags);
cfq_rq_enqueued(cfqd, cfqq, rq);
}
cfqq->dispatched--;
(RQ_CFQG(rq))->dispatched--;
cfqg_stats_update_completion(cfqq->cfqg, rq_start_time_ns(rq),
- rq_io_start_time_ns(rq), req_op(rq),
- rq->cmd_flags);
+ rq_io_start_time_ns(rq), rq->cmd_flags);
cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--;
cfq_schedule_dispatch(cfqd);
}
-static void cfqq_boost_on_prio(struct cfq_queue *cfqq, int op_flags)
+static void cfqq_boost_on_prio(struct cfq_queue *cfqq, unsigned int op)
{
/*
* If REQ_PRIO is set, boost class and prio level, if it's below
* BE/NORM. If prio is not set, restore the potentially boosted
* class/prio level.
*/
- if (!(op_flags & REQ_PRIO)) {
+ if (!(op & REQ_PRIO)) {
cfqq->ioprio_class = cfqq->org_ioprio_class;
cfqq->ioprio = cfqq->org_ioprio;
} else {
return ELV_MQUEUE_MAY;
}
-static int cfq_may_queue(struct request_queue *q, int op, int op_flags)
+static int cfq_may_queue(struct request_queue *q, unsigned int op)
{
struct cfq_data *cfqd = q->elevator->elevator_data;
struct task_struct *tsk = current;
if (!cic)
return ELV_MQUEUE_MAY;
- cfqq = cic_to_cfqq(cic, rw_is_sync(op, op_flags));
+ cfqq = cic_to_cfqq(cic, op_is_sync(op));
if (cfqq) {
cfq_init_prio_data(cfqq, cic);
- cfqq_boost_on_prio(cfqq, op_flags);
+ cfqq_boost_on_prio(cfqq, op);
return __cfq_may_queue(cfqq);
}
e->type->ops.elevator_put_req_fn(rq);
}
-int elv_may_queue(struct request_queue *q, int op, int op_flags)
+int elv_may_queue(struct request_queue *q, unsigned int op)
{
struct elevator_queue *e = q->elevator;
if (e->type->ops.elevator_may_queue_fn)
- return e->type->ops.elevator_may_queue_fn(q, op, op_flags);
+ return e->type->ops.elevator_may_queue_fn(q, op);
return ELV_MQUEUE_MAY;
}
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
- bio_set_op_attrs(clone, bio_op(io->base_bio), bio_flags(io->base_bio));
+ clone->bi_opf = io->base_bio->bi_opf;
}
static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
} else if (rq_data_dir(rq) == READ) {
SCpnt->cmnd[0] = READ_6;
} else {
- scmd_printk(KERN_ERR, SCpnt, "Unknown command %llu,%llx\n",
- req_op(rq), (unsigned long long) rq->cmd_flags);
+ scmd_printk(KERN_ERR, SCpnt, "Unknown command %d\n", req_op(rq));
goto out;
}
if (!bio)
return -ENOMEM;
- bio_set_op_attrs(bio, bio_op(orig_bio), bio_flags(orig_bio));
+ bio->bi_opf = orig_bio->bi_opf;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
btrfs_io_bio(bio)->logical = file_offset;
start_sector, GFP_NOFS);
if (!bio)
goto out_err;
- bio_set_op_attrs(bio, bio_op(orig_bio),
- bio_flags(orig_bio));
+ bio->bi_opf = orig_bio->bi_opf;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
btrfs_io_bio(bio)->logical = file_offset;
/**
* ll_rw_block: low-level access to block devices (DEPRECATED)
* @op: whether to %READ or %WRITE
- * @op_flags: rq_flag_bits
+ * @op_flags: req_flag_bits
* @nr: number of &struct buffer_heads in the array
* @bhs: array of pointers to &struct buffer_head
*
struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
int op; /* contains REQ_OP_ */
- int op_flags; /* rq_flag_bits */
+ int op_flags; /* req_flag_bits */
block_t new_blkaddr; /* new block address to be written */
block_t old_blkaddr; /* old block address before Cow */
struct page *page; /* page to be written */
* gfs2_log_flush_bio - Submit any pending log bio
* @sdp: The superblock
* @op: REQ_OP
- * @op_flags: rq_flag_bits
+ * @op_flags: req_flag_bits
*
* Submit any pending part-built or full bio to the block device. If
* there is no pending bio, then this is a no-op.
/**
* blkg_rwstat_add - add a value to a blkg_rwstat
* @rwstat: target blkg_rwstat
- * @op: REQ_OP
- * @op_flags: rq_flag_bits
+ * @op: REQ_OP and flags
* @val: value to add
*
* Add @val to @rwstat. The counters are chosen according to @rw. The
* caller is responsible for synchronizing calls to this function.
*/
static inline void blkg_rwstat_add(struct blkg_rwstat *rwstat,
- int op, int op_flags, uint64_t val)
+ unsigned int op, uint64_t val)
{
struct percpu_counter *cnt;
__percpu_counter_add(cnt, val, BLKG_STAT_CPU_BATCH);
- if (op_flags & REQ_SYNC)
+ if (op & REQ_SYNC)
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_SYNC];
else
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_ASYNC];
if (!throtl) {
blkg = blkg ?: q->root_blkg;
- blkg_rwstat_add(&blkg->stat_bytes, bio_op(bio), bio->bi_opf,
+ blkg_rwstat_add(&blkg->stat_bytes, bio->bi_opf,
bio->bi_iter.bi_size);
- blkg_rwstat_add(&blkg->stat_ios, bio_op(bio), bio->bi_opf, 1);
+ blkg_rwstat_add(&blkg->stat_ios, bio->bi_opf, 1);
}
rcu_read_unlock();
struct bio_vec bi_inline_vecs[0];
};
-#define BIO_OP_SHIFT (8 * FIELD_SIZEOF(struct bio, bi_opf) - REQ_OP_BITS)
-#define bio_flags(bio) ((bio)->bi_opf & ((1 << BIO_OP_SHIFT) - 1))
-#define bio_op(bio) ((bio)->bi_opf >> BIO_OP_SHIFT)
-
-#define bio_set_op_attrs(bio, op, op_flags) do { \
- if (__builtin_constant_p(op)) \
- BUILD_BUG_ON((op) + 0U >= (1U << REQ_OP_BITS)); \
- else \
- WARN_ON_ONCE((op) + 0U >= (1U << REQ_OP_BITS)); \
- if (__builtin_constant_p(op_flags)) \
- BUILD_BUG_ON((op_flags) + 0U >= (1U << BIO_OP_SHIFT)); \
- else \
- WARN_ON_ONCE((op_flags) + 0U >= (1U << BIO_OP_SHIFT)); \
- (bio)->bi_opf = bio_flags(bio); \
- (bio)->bi_opf |= (((op) + 0U) << BIO_OP_SHIFT); \
- (bio)->bi_opf |= (op_flags); \
-} while (0)
-
#define BIO_RESET_BYTES offsetof(struct bio, bi_max_vecs)
/*
#endif /* CONFIG_BLOCK */
/*
- * Request flags. For use in the cmd_flags field of struct request, and in
- * bi_opf of struct bio. Note that some flags are only valid in either one.
+ * Operations and flags common to the bio and request structures.
+ * We use 8 bits for encoding the operation, and the remaining 24 for flags.
*/
-enum rq_flag_bits {
- /* common flags */
- __REQ_FAILFAST_DEV, /* no driver retries of device errors */
+#define REQ_OP_BITS 8
+#define REQ_OP_MASK ((1 << REQ_OP_BITS) - 1)
+#define REQ_FLAG_BITS 24
+
+enum req_opf {
+ REQ_OP_READ,
+ REQ_OP_WRITE,
+ REQ_OP_DISCARD, /* request to discard sectors */
+ REQ_OP_SECURE_ERASE, /* request to securely erase sectors */
+ REQ_OP_WRITE_SAME, /* write same block many times */
+ REQ_OP_FLUSH, /* request for cache flush */
+ REQ_OP_ZONE_REPORT, /* Get zone information */
+ REQ_OP_ZONE_RESET, /* Reset a zone write pointer */
+
+ REQ_OP_LAST,
+};
+
+enum req_flag_bits {
+ __REQ_FAILFAST_DEV = /* no driver retries of device errors */
+ REQ_OP_BITS,
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
-
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_PRIO, /* boost priority in cfq */
-
__REQ_NOMERGE, /* don't touch this for merging */
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
__REQ_FUA, /* forced unit access */
__REQ_PREFLUSH, /* request for cache flush */
__REQ_RAHEAD, /* read ahead, can fail anytime */
-
__REQ_NR_BITS, /* stops here */
};
#define REQ_SYNC (1ULL << __REQ_SYNC)
#define REQ_META (1ULL << __REQ_META)
#define REQ_PRIO (1ULL << __REQ_PRIO)
+#define REQ_NOMERGE (1ULL << __REQ_NOMERGE)
#define REQ_NOIDLE (1ULL << __REQ_NOIDLE)
#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
+#define REQ_FUA (1ULL << __REQ_FUA)
+#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
+#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
-#define REQ_COMMON_MASK \
- (REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
- REQ_PREFLUSH | REQ_FUA | REQ_INTEGRITY | REQ_NOMERGE | REQ_RAHEAD)
-#define REQ_CLONE_MASK REQ_COMMON_MASK
-/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
(REQ_NOMERGE | REQ_PREFLUSH | REQ_FUA)
-#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
-#define REQ_FUA (1ULL << __REQ_FUA)
-#define REQ_NOMERGE (1ULL << __REQ_NOMERGE)
-#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
+#define bio_op(bio) \
+ ((bio)->bi_opf & REQ_OP_MASK)
+#define req_op(req) \
+ ((req)->cmd_flags & REQ_OP_MASK)
-enum req_op {
- REQ_OP_READ,
- REQ_OP_WRITE,
- REQ_OP_DISCARD, /* request to discard sectors */
- REQ_OP_SECURE_ERASE, /* request to securely erase sectors */
- REQ_OP_WRITE_SAME, /* write same block many times */
- REQ_OP_FLUSH, /* request for cache flush */
- REQ_OP_ZONE_REPORT, /* Get zone information */
- REQ_OP_ZONE_RESET, /* Reset a zone write pointer */
-};
+/* obsolete, don't use in new code */
+#define bio_set_op_attrs(bio, op, op_flags) \
+ ((bio)->bi_opf |= (op | op_flags))
-#define REQ_OP_BITS 3
+static inline bool op_is_sync(unsigned int op)
+{
+ return (op & REQ_OP_MASK) == REQ_OP_READ || (op & REQ_SYNC);
+}
typedef unsigned int blk_qc_t;
#define BLK_QC_T_NONE -1U
int cpu;
unsigned cmd_type;
- u64 cmd_flags;
+ unsigned int cmd_flags; /* op and common flags */
req_flags_t rq_flags;
unsigned long atomic_flags;
struct request *next_rq;
};
-#define REQ_OP_SHIFT (8 * sizeof(u64) - REQ_OP_BITS)
-#define req_op(req) ((req)->cmd_flags >> REQ_OP_SHIFT)
-
-#define req_set_op(req, op) do { \
- WARN_ON(op >= (1 << REQ_OP_BITS)); \
- (req)->cmd_flags &= ((1ULL << REQ_OP_SHIFT) - 1); \
- (req)->cmd_flags |= ((u64) (op) << REQ_OP_SHIFT); \
-} while (0)
-
-#define req_set_op_attrs(req, op, flags) do { \
- req_set_op(req, op); \
- (req)->cmd_flags |= flags; \
-} while (0)
-
static inline unsigned short req_get_ioprio(struct request *req)
{
return req->ioprio;
return blk_queue_is_zoned(q) ? q->limits.chunk_sectors : 0;
}
-/*
- * We regard a request as sync, if either a read or a sync write
- */
-static inline bool rw_is_sync(int op, unsigned int rw_flags)
-{
- return op == REQ_OP_READ || (rw_flags & REQ_SYNC);
-}
-
static inline bool rq_is_sync(struct request *rq)
{
- return rw_is_sync(req_op(rq), rq->cmd_flags);
+ return op_is_sync(rq->cmd_flags);
}
static inline bool blk_rl_full(struct request_list *rl, bool sync)
}
extern void blk_dump_cmd(char *buf, struct request *rq);
-extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes);
+extern void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
struct dm_io_client;
struct dm_io_request {
int bi_op; /* REQ_OP */
- int bi_op_flags; /* rq_flag_bits */
+ int bi_op_flags; /* req_flag_bits */
struct dm_io_memory mem; /* Memory to use for io */
struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
struct dm_io_client *client; /* Client memory handler */
typedef void (elevator_add_req_fn) (struct request_queue *, struct request *);
typedef struct request *(elevator_request_list_fn) (struct request_queue *, struct request *);
typedef void (elevator_completed_req_fn) (struct request_queue *, struct request *);
-typedef int (elevator_may_queue_fn) (struct request_queue *, int, int);
+typedef int (elevator_may_queue_fn) (struct request_queue *, unsigned int);
typedef void (elevator_init_icq_fn) (struct io_cq *);
typedef void (elevator_exit_icq_fn) (struct io_cq *);
extern struct request *elv_latter_request(struct request_queue *, struct request *);
extern int elv_register_queue(struct request_queue *q);
extern void elv_unregister_queue(struct request_queue *q);
-extern int elv_may_queue(struct request_queue *, int, int);
+extern int elv_may_queue(struct request_queue *, unsigned int);
extern void elv_completed_request(struct request_queue *, struct request *);
extern int elv_set_request(struct request_queue *q, struct request *rq,
struct bio *bio, gfp_t gfp_mask);
__entry->sector = bio->bi_iter.bi_sector;
__entry->orig_sector = bio->bi_iter.bi_sector - 16;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u",
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
__entry->cache_hit = hit;
__entry->bypass = bypass;
),
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
__entry->writeback = writeback;
__entry->bypass = bypass;
),
0 : blk_rq_sectors(rq);
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
- blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
),
__entry->nr_sector = nr_bytes >> 9;
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, nr_bytes);
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
blk_dump_cmd(__get_str(cmd), rq);
),
__entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_bytes(rq) : 0;
- blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
- blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
bio->bi_bdev->bd_dev : 0;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
__entry->error = error;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u [%d]",
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
__entry->sector = bio ? bio->bi_iter.bi_sector : 0;
__entry->nr_sector = bio ? bio_sectors(bio) : 0;
- blk_fill_rwbs(__entry->rwbs, bio ? bio_op(bio) : 0,
+ blk_fill_rwbs(__entry->rwbs,
bio ? bio->bi_opf : 0, __entry->nr_sector);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->new_sector = new_sector;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
__entry->nr_sector = bio_sectors(bio);
__entry->old_dev = dev;
__entry->old_sector = from;
- blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_opf,
- bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
__entry->old_dev = dev;
__entry->old_sector = from;
__entry->nr_bios = blk_rq_count_bios(rq);
- blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
- blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
}
}
-void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
+void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes)
{
int i = 0;
- if (rw & REQ_PREFLUSH)
+ if (op & REQ_PREFLUSH)
rwbs[i++] = 'F';
- switch (op) {
+ switch (op & REQ_OP_MASK) {
case REQ_OP_WRITE:
case REQ_OP_WRITE_SAME:
rwbs[i++] = 'W';
rwbs[i++] = 'N';
}
- if (rw & REQ_FUA)
+ if (op & REQ_FUA)
rwbs[i++] = 'F';
- if (rw & REQ_RAHEAD)
+ if (op & REQ_RAHEAD)
rwbs[i++] = 'A';
- if (rw & REQ_SYNC)
+ if (op & REQ_SYNC)
rwbs[i++] = 'S';
- if (rw & REQ_META)
+ if (op & REQ_META)
rwbs[i++] = 'M';
rwbs[i] = '\0';
projects / linux.git / commitdiff