From: Mike Christie <mchristi@xxxxxxxxxx> This patch converts the request related block layer code to set request->op to a REQ_OP and cmd_flags to rq_flag_bits. There is some tmp compat code when setting up cmd_flags so it still carries both the op and flags. It will be removed in in later patches in this set when I have converted all drivers. I have not been able to test the mq paths with real mq hardware. Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx> --- block/blk-core.c | 60 ++++++++++++++++++++++++++-------------------- block/blk-flush.c | 1 + block/blk-merge.c | 10 ++++---- block/blk-mq.c | 38 ++++++++++++++++------------- block/cfq-iosched.c | 53 +++++++++++++++++++++++----------------- block/elevator.c | 8 +++---- include/linux/blk-cgroup.h | 13 +++++----- include/linux/blkdev.h | 28 +++++++++++----------- include/linux/elevator.h | 4 ++-- 9 files changed, 120 insertions(+), 95 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 954a450..dacbd68 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -959,10 +959,10 @@ static void __freed_request(struct request_list *rl, int sync) * 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, unsigned int flags) +static void freed_request(struct request_list *rl, int op, unsigned int flags) { struct request_queue *q = rl->q; - int sync = rw_is_sync(flags); + int sync = rw_is_sync(op, flags); q->nr_rqs[sync]--; rl->count[sync]--; @@ -1054,7 +1054,8 @@ static struct io_context *rq_ioc(struct bio *bio) /** * __get_request - get a free request * @rl: request list to allocate from - * @rw_flags: RW and SYNC flags + * @op: REQ_OP_READ/REQ_OP_WRITE + * @op_flags: rq_flag_bits * @bio: bio to allocate request for (can be %NULL) * @gfp_mask: allocation mask * @@ -1065,21 +1066,22 @@ static struct io_context *rq_ioc(struct bio *bio) * 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 rw_flags, - struct bio *bio, gfp_t gfp_mask) +static struct request *__get_request(struct request_list *rl, int op, + int op_flags, 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(rw_flags) != 0; + const bool is_sync = rw_is_sync(op, op_flags) != 0; int may_queue; if (unlikely(blk_queue_dying(q))) return ERR_PTR(-ENODEV); - may_queue = elv_may_queue(q, rw_flags); + may_queue = elv_may_queue(q, op, op_flags); if (may_queue == ELV_MQUEUE_NO) goto rq_starved; @@ -1123,7 +1125,7 @@ static struct request *__get_request(struct request_list *rl, int rw_flags, /* * Decide whether the new request will be managed by elevator. If - * so, mark @rw_flags and increment elvpriv. Non-zero elvpriv will + * so, mark @op_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. @@ -1132,14 +1134,14 @@ static struct request *__get_request(struct request_list *rl, int rw_flags, * it will be created after releasing queue_lock. */ if (blk_rq_should_init_elevator(bio) && !blk_queue_bypass(q)) { - rw_flags |= REQ_ELVPRIV; + op_flags |= REQ_ELVPRIV; q->nr_rqs_elvpriv++; if (et->icq_cache && ioc) icq = ioc_lookup_icq(ioc, q); } if (blk_queue_io_stat(q)) - rw_flags |= REQ_IO_STAT; + op_flags |= REQ_IO_STAT; spin_unlock_irq(q->queue_lock); /* allocate and init request */ @@ -1149,10 +1151,12 @@ static struct request *__get_request(struct request_list *rl, int rw_flags, blk_rq_init(q, rq); blk_rq_set_rl(rq, rl); - rq->cmd_flags = rw_flags | REQ_ALLOCED; + /* tmp compat - allow users to check either one for the op */ + rq->cmd_flags = op | op_flags | REQ_ALLOCED; + rq->op = op; /* init elvpriv */ - if (rw_flags & REQ_ELVPRIV) { + if (op_flags & REQ_ELVPRIV) { if (unlikely(et->icq_cache && !icq)) { if (ioc) icq = ioc_create_icq(ioc, q, gfp_mask); @@ -1178,7 +1182,7 @@ out: if (ioc_batching(q, ioc)) ioc->nr_batch_requests--; - trace_block_getrq(q, bio, rw_flags & 1); + trace_block_getrq(q, bio, op); return rq; fail_elvpriv: @@ -1208,7 +1212,7 @@ fail_alloc: * queue, but this is pretty rare. */ spin_lock_irq(q->queue_lock); - freed_request(rl, rw_flags); + freed_request(rl, op, op_flags); /* * in the very unlikely event that allocation failed and no @@ -1226,7 +1230,8 @@ rq_starved: /** * get_request - get a free request * @q: request_queue to allocate request from - * @rw_flags: RW and SYNC flags + * op: REQ_OP_READ/REQ_OP_WRITE + * @op_flags: rq_flag_bits * @bio: bio to allocate request for (can be %NULL) * @gfp_mask: allocation mask * @@ -1237,17 +1242,18 @@ rq_starved: * 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 rw_flags, - struct bio *bio, gfp_t gfp_mask) +static struct request *get_request(struct request_queue *q, int op, + int op_flags, struct bio *bio, + gfp_t gfp_mask) { - const bool is_sync = rw_is_sync(rw_flags) != 0; + const bool is_sync = rw_is_sync(op, op_flags) != 0; 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, rw_flags, bio, gfp_mask); + rq = __get_request(rl, op, op_flags, bio, gfp_mask); if (!IS_ERR(rq)) return rq; @@ -1260,7 +1266,7 @@ retry: prepare_to_wait_exclusive(&rl->wait[is_sync], &wait, TASK_UNINTERRUPTIBLE); - trace_block_sleeprq(q, bio, rw_flags & 1); + trace_block_sleeprq(q, bio, op); spin_unlock_irq(q->queue_lock); io_schedule(); @@ -1289,7 +1295,7 @@ static struct request *blk_old_get_request(struct request_queue *q, int rw, create_io_context(gfp_mask, q->node); spin_lock_irq(q->queue_lock); - rq = get_request(q, rw, NULL, gfp_mask); + rq = get_request(q, rw, 0, NULL, gfp_mask); if (IS_ERR(rq)) spin_unlock_irq(q->queue_lock); /* q->queue_lock is unlocked at this point */ @@ -1491,13 +1497,14 @@ void __blk_put_request(struct request_queue *q, struct request *req) */ if (req->cmd_flags & REQ_ALLOCED) { unsigned int flags = req->cmd_flags; + int op = req->op; struct request_list *rl = blk_rq_rl(req); BUG_ON(!list_empty(&req->queuelist)); BUG_ON(ELV_ON_HASH(req)); blk_free_request(rl, req); - freed_request(rl, flags); + freed_request(rl, op, flags); blk_put_rl(rl); } } @@ -1712,7 +1719,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio) { const bool sync = !!(bio->bi_rw & REQ_SYNC); struct blk_plug *plug; - int el_ret, rw_flags, where = ELEVATOR_INSERT_SORT; + int el_ret, rw_flags = 0, where = ELEVATOR_INSERT_SORT; struct request *req; unsigned int request_count = 0; @@ -1772,7 +1779,6 @@ get_rq: * but we need to set it earlier to expose the sync flag to the * rq allocator and io schedulers. */ - rw_flags = bio_data_dir(bio); if (sync) rw_flags |= REQ_SYNC; @@ -1780,7 +1786,7 @@ get_rq: * Grab a free request. This is might sleep but can not fail. * Returns with the queue unlocked. */ - req = get_request(q, rw_flags, bio, GFP_NOIO); + req = get_request(q, bio_data_dir(bio), rw_flags, bio, GFP_NOIO); if (IS_ERR(req)) { bio->bi_error = PTR_ERR(req); bio_endio(bio); @@ -2168,7 +2174,7 @@ EXPORT_SYMBOL(submit_bio); static int blk_cloned_rq_check_limits(struct request_queue *q, struct request *rq) { - if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->cmd_flags)) { + if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->op)) { printk(KERN_ERR "%s: over max size limit.\n", __func__); return -EIO; } @@ -2987,6 +2993,7 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq, { /* tmp compat. Allow users to set bi_op or bi_rw */ rq->cmd_flags |= bio_data_dir(bio); + rq->op = bio->bi_op; if (bio_has_data(bio)) rq->nr_phys_segments = bio_phys_segments(q, bio); @@ -3071,6 +3078,7 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone); static void __blk_rq_prep_clone(struct request *dst, struct request *src) { dst->cpu = src->cpu; + dst->op = src->op; dst->cmd_flags |= (src->cmd_flags & REQ_CLONE_MASK) | REQ_NOMERGE; dst->cmd_type = src->cmd_type; dst->__sector = blk_rq_pos(src); diff --git a/block/blk-flush.c b/block/blk-flush.c index b05acca..e01d3ac 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -330,6 +330,7 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq) flush_rq->cmd_type = REQ_TYPE_FS; flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ; + flush_rq->op = REQ_OP_WRITE; flush_rq->rq_disk = first_rq->rq_disk; flush_rq->end_io = flush_end_io; diff --git a/block/blk-merge.c b/block/blk-merge.c index b66f095..de73ed1 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -628,7 +628,8 @@ static int attempt_merge(struct request_queue *q, struct request *req, if (!rq_mergeable(req) || !rq_mergeable(next)) return 0; - if (!blk_check_merge_flags(req->cmd_flags, next->cmd_flags)) + if (!blk_check_merge_flags(req->cmd_flags, req->op, next->cmd_flags, + next->op)) return 0; /* @@ -642,7 +643,7 @@ static int attempt_merge(struct request_queue *q, struct request *req, || req_no_special_merge(next)) return 0; - if (req->cmd_flags & REQ_WRITE_SAME && + if (req->op == REQ_OP_WRITE_SAME && !blk_write_same_mergeable(req->bio, next->bio)) return 0; @@ -730,7 +731,8 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) if (!rq_mergeable(rq) || !bio_mergeable(bio)) return false; - if (!blk_check_merge_flags(rq->cmd_flags, bio->bi_rw)) + if (!blk_check_merge_flags(rq->cmd_flags, rq->op, bio->bi_rw, + bio->bi_op)) return false; /* different data direction or already started, don't merge */ @@ -746,7 +748,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) return false; /* must be using the same buffer */ - if (rq->cmd_flags & REQ_WRITE_SAME && + if (rq->op == REQ_OP_WRITE_SAME && !blk_write_same_mergeable(rq->bio, bio)) return false; diff --git a/block/blk-mq.c b/block/blk-mq.c index 4c0622f..745dae8 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -159,16 +159,19 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx) 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, unsigned int rw_flags) + struct request *rq, int op, + unsigned int op_flags) { if (blk_queue_io_stat(q)) - rw_flags |= REQ_IO_STAT; + 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; - rq->cmd_flags |= rw_flags; + rq->op = op; + /* tmp compat - allow users to check either one for the op */ + rq->cmd_flags |= op | op_flags; /* do not touch atomic flags, it needs atomic ops against the timer */ rq->cpu = -1; INIT_HLIST_NODE(&rq->hash); @@ -203,11 +206,11 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx, rq->end_io_data = NULL; rq->next_rq = NULL; - ctx->rq_dispatched[rw_is_sync(rw_flags)]++; + ctx->rq_dispatched[rw_is_sync(op, op_flags)]++; } static struct request * -__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw) +__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int op, int op_flags) { struct request *rq; unsigned int tag; @@ -222,7 +225,7 @@ __blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw) } rq->tag = tag; - blk_mq_rq_ctx_init(data->q, data->ctx, rq, rw); + blk_mq_rq_ctx_init(data->q, data->ctx, rq, op, op_flags); return rq; } @@ -246,7 +249,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw, hctx = q->mq_ops->map_queue(q, ctx->cpu); blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx); - rq = __blk_mq_alloc_request(&alloc_data, rw); + rq = __blk_mq_alloc_request(&alloc_data, rw, 0); if (!rq && !(flags & BLK_MQ_REQ_NOWAIT)) { __blk_mq_run_hw_queue(hctx); blk_mq_put_ctx(ctx); @@ -254,7 +257,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw, ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx); - rq = __blk_mq_alloc_request(&alloc_data, rw); + rq = __blk_mq_alloc_request(&alloc_data, rw, 0); ctx = alloc_data.ctx; } blk_mq_put_ctx(ctx); @@ -1165,28 +1168,29 @@ static struct request *blk_mq_map_request(struct request_queue *q, struct blk_mq_hw_ctx *hctx; struct blk_mq_ctx *ctx; struct request *rq; - int rw = bio_data_dir(bio); + int op = bio_data_dir(bio); + int op_flags = 0; struct blk_mq_alloc_data alloc_data; blk_queue_enter_live(q); ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); - if (rw_is_sync(bio->bi_rw)) - rw |= REQ_SYNC; + if (rw_is_sync(bio->bi_op, bio->bi_rw)) + op_flags |= REQ_SYNC; - trace_block_getrq(q, bio, rw); + trace_block_getrq(q, bio, op); blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx); - rq = __blk_mq_alloc_request(&alloc_data, rw); + rq = __blk_mq_alloc_request(&alloc_data, op, op_flags); if (unlikely(!rq)) { __blk_mq_run_hw_queue(hctx); blk_mq_put_ctx(ctx); - trace_block_sleeprq(q, bio, rw); + trace_block_sleeprq(q, bio, op); ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx); - rq = __blk_mq_alloc_request(&alloc_data, rw); + rq = __blk_mq_alloc_request(&alloc_data, op, op_flags); ctx = alloc_data.ctx; hctx = alloc_data.hctx; } @@ -1240,7 +1244,7 @@ static int blk_mq_direct_issue_request(struct request *rq, blk_qc_t *cookie) */ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) { - const int is_sync = rw_is_sync(bio->bi_rw); + const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw); const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA); struct blk_map_ctx data; struct request *rq; @@ -1337,7 +1341,7 @@ done: */ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio) { - const int is_sync = rw_is_sync(bio->bi_rw); + const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw); const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA); struct blk_plug *plug; unsigned int request_count = 0; diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 1f9093e..d300aa1 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -660,9 +660,10 @@ static inline void cfqg_put(struct cfq_group *cfqg) } while (0) static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg, - struct cfq_group *curr_cfqg, int rw) + struct cfq_group *curr_cfqg, int op, + int op_flags) { - blkg_rwstat_add(&cfqg->stats.queued, rw, 1); + blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, 1); cfqg_stats_end_empty_time(&cfqg->stats); cfqg_stats_set_start_group_wait_time(cfqg, curr_cfqg); } @@ -676,26 +677,30 @@ static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg, #endif } -static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw) +static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op, + int op_flags) { - blkg_rwstat_add(&cfqg->stats.queued, rw, -1); + blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, -1); } -static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw) +static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op, + int op_flags) { - blkg_rwstat_add(&cfqg->stats.merged, rw, 1); + blkg_rwstat_add(&cfqg->stats.merged, op, op_flags, 1); } static inline void cfqg_stats_update_completion(struct cfq_group *cfqg, - uint64_t start_time, uint64_t io_start_time, int rw) + uint64_t start_time, uint64_t io_start_time, int op, + int op_flags) { 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, rw, now - io_start_time); + blkg_rwstat_add(&stats->service_time, op, op_flags, + now - io_start_time); if (time_after64(io_start_time, start_time)) - blkg_rwstat_add(&stats->wait_time, rw, + blkg_rwstat_add(&stats->wait_time, op, op_flags, io_start_time - start_time); } @@ -769,13 +774,16 @@ static inline void cfqg_put(struct cfq_group *cfqg) { } #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 rw) { } + struct cfq_group *curr_cfqg, int op, int op_flags) { } static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg, unsigned long time, unsigned long unaccounted_time) { } -static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw) { } -static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw) { } +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_completion(struct cfq_group *cfqg, - uint64_t start_time, uint64_t io_start_time, int rw) { } + uint64_t start_time, uint64_t io_start_time, int op, + int op_flags) { } #endif /* CONFIG_CFQ_GROUP_IOSCHED */ @@ -2449,10 +2457,10 @@ static void cfq_reposition_rq_rb(struct cfq_queue *cfqq, struct request *rq) { elv_rb_del(&cfqq->sort_list, rq); cfqq->queued[rq_is_sync(rq)]--; - cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags); + cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags); cfq_add_rq_rb(rq); cfqg_stats_update_io_add(RQ_CFQG(rq), cfqq->cfqd->serving_group, - rq->cmd_flags); + rq->op, rq->cmd_flags); } static struct request * @@ -2505,7 +2513,7 @@ static void cfq_remove_request(struct request *rq) cfq_del_rq_rb(rq); cfqq->cfqd->rq_queued--; - cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags); + cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags); if (rq->cmd_flags & REQ_PRIO) { WARN_ON(!cfqq->prio_pending); cfqq->prio_pending--; @@ -2540,7 +2548,7 @@ static void cfq_merged_request(struct request_queue *q, struct request *req, static void cfq_bio_merged(struct request_queue *q, struct request *req, struct bio *bio) { - cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_rw); + cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_op, bio->bi_rw); } static void @@ -2563,7 +2571,7 @@ cfq_merged_requests(struct request_queue *q, struct request *rq, if (cfqq->next_rq == next) cfqq->next_rq = rq; cfq_remove_request(next); - cfqg_stats_update_io_merged(RQ_CFQG(rq), next->cmd_flags); + cfqg_stats_update_io_merged(RQ_CFQG(rq), next->op, next->cmd_flags); cfqq = RQ_CFQQ(next); /* @@ -4085,7 +4093,7 @@ static void cfq_insert_request(struct request_queue *q, struct request *rq) rq->fifo_time = jiffies + 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, + cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group, rq->op, rq->cmd_flags); cfq_rq_enqueued(cfqd, cfqq, rq); } @@ -4183,7 +4191,8 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq) cfqq->dispatched--; (RQ_CFQG(rq))->dispatched--; cfqg_stats_update_completion(cfqq->cfqg, rq_start_time_ns(rq), - rq_io_start_time_ns(rq), rq->cmd_flags); + rq_io_start_time_ns(rq), rq->op, + rq->cmd_flags); cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--; @@ -4262,7 +4271,7 @@ static inline int __cfq_may_queue(struct cfq_queue *cfqq) return ELV_MQUEUE_MAY; } -static int cfq_may_queue(struct request_queue *q, int rw) +static int cfq_may_queue(struct request_queue *q, int op, int op_flags) { struct cfq_data *cfqd = q->elevator->elevator_data; struct task_struct *tsk = current; @@ -4279,7 +4288,7 @@ static int cfq_may_queue(struct request_queue *q, int rw) if (!cic) return ELV_MQUEUE_MAY; - cfqq = cic_to_cfqq(cic, rw_is_sync(rw)); + cfqq = cic_to_cfqq(cic, rw_is_sync(op, op_flags)); if (cfqq) { cfq_init_prio_data(cfqq, cic); diff --git a/block/elevator.c b/block/elevator.c index c3555c9..f6279ca 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -366,8 +366,8 @@ void elv_dispatch_sort(struct request_queue *q, struct request *rq) list_for_each_prev(entry, &q->queue_head) { struct request *pos = list_entry_rq(entry); - if ((rq->cmd_flags & REQ_DISCARD) != - (pos->cmd_flags & REQ_DISCARD)) + if ((rq->op == REQ_OP_DISCARD) != + (pos->op == REQ_OP_DISCARD)) break; if (rq_data_dir(rq) != rq_data_dir(pos)) break; @@ -717,12 +717,12 @@ void elv_put_request(struct request_queue *q, struct request *rq) e->type->ops.elevator_put_req_fn(rq); } -int elv_may_queue(struct request_queue *q, int rw) +int elv_may_queue(struct request_queue *q, int op, int op_flags) { struct elevator_queue *e = q->elevator; if (e->type->ops.elevator_may_queue_fn) - return e->type->ops.elevator_may_queue_fn(q, rw); + return e->type->ops.elevator_may_queue_fn(q, op, op_flags); return ELV_MQUEUE_MAY; } diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index c02e669..9071feb 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -590,25 +590,26 @@ static inline void blkg_rwstat_exit(struct blkg_rwstat *rwstat) /** * blkg_rwstat_add - add a value to a blkg_rwstat * @rwstat: target blkg_rwstat - * @rw: mask of REQ_{WRITE|SYNC} + * @op: REQ_OP + * @op_flags: rq_flag_bits * @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 rw, uint64_t val) + int op, int op_flags, uint64_t val) { struct percpu_counter *cnt; - if (rw & REQ_WRITE) + if (op_is_write(op)) cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_WRITE]; else cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_READ]; __percpu_counter_add(cnt, val, BLKG_STAT_CPU_BATCH); - if (rw & REQ_SYNC) + if (op_flags & REQ_SYNC) cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_SYNC]; else cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_ASYNC]; @@ -713,9 +714,9 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q, if (!throtl) { blkg = blkg ?: q->root_blkg; - blkg_rwstat_add(&blkg->stat_bytes, bio->bi_rw, + blkg_rwstat_add(&blkg->stat_bytes, bio->bi_op, bio->bi_rw, bio->bi_iter.bi_size); - blkg_rwstat_add(&blkg->stat_ios, bio->bi_rw, 1); + blkg_rwstat_add(&blkg->stat_ios, bio->bi_op, bio->bi_rw, 1); } rcu_read_unlock(); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 35b9eb3..bc024c7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -596,7 +596,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist) -#define rq_data_dir(rq) ((int)((rq)->cmd_flags & 1)) +#define rq_data_dir(rq) (op_is_write(rq->op) ? WRITE : READ) /* * Driver can handle struct request, if it either has an old style @@ -615,14 +615,14 @@ static inline unsigned int blk_queue_cluster(struct request_queue *q) /* * We regard a request as sync, if either a read or a sync write */ -static inline bool rw_is_sync(unsigned int rw_flags) +static inline bool rw_is_sync(int op, unsigned int rw_flags) { - return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC); + return op == REQ_OP_READ || (rw_flags & REQ_SYNC); } static inline bool rq_is_sync(struct request *rq) { - return rw_is_sync(rq->cmd_flags); + return rw_is_sync(rq->op, rq->cmd_flags); } static inline bool blk_rl_full(struct request_list *rl, bool sync) @@ -657,16 +657,16 @@ static inline bool rq_mergeable(struct request *rq) return true; } -static inline bool blk_check_merge_flags(unsigned int flags1, - unsigned int flags2) +static inline bool blk_check_merge_flags(unsigned int flags1, unsigned int op1, + unsigned int flags2, unsigned int op2) { - if ((flags1 & REQ_DISCARD) != (flags2 & REQ_DISCARD)) + if ((op1 == REQ_OP_DISCARD) != (op2 == REQ_OP_DISCARD)) return false; if ((flags1 & REQ_SECURE) != (flags2 & REQ_SECURE)) return false; - if ((flags1 & REQ_WRITE_SAME) != (flags2 & REQ_WRITE_SAME)) + if ((op1 == REQ_OP_WRITE_SAME) != (op2 == REQ_OP_WRITE_SAME)) return false; return true; @@ -864,12 +864,12 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq) } static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q, - unsigned int cmd_flags) + int op) { - if (unlikely(cmd_flags & REQ_DISCARD)) + if (unlikely(op == REQ_OP_DISCARD)) return min(q->limits.max_discard_sectors, UINT_MAX >> 9); - if (unlikely(cmd_flags & REQ_WRITE_SAME)) + if (unlikely(op == REQ_OP_WRITE_SAME)) return q->limits.max_write_same_sectors; return q->limits.max_sectors; @@ -896,11 +896,11 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq) if (unlikely(rq->cmd_type == REQ_TYPE_BLOCK_PC)) return q->limits.max_hw_sectors; - if (!q->limits.chunk_sectors || (rq->cmd_flags & REQ_DISCARD)) - return blk_queue_get_max_sectors(q, rq->cmd_flags); + if (!q->limits.chunk_sectors || (rq->op == REQ_OP_DISCARD)) + return blk_queue_get_max_sectors(q, rq->op); return min(blk_max_size_offset(q, blk_rq_pos(rq)), - blk_queue_get_max_sectors(q, rq->cmd_flags)); + blk_queue_get_max_sectors(q, rq->op)); } static inline unsigned int blk_rq_count_bios(struct request *rq) diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 638b324..953d286 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -26,7 +26,7 @@ typedef int (elevator_dispatch_fn) (struct request_queue *, int); 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); +typedef int (elevator_may_queue_fn) (struct request_queue *, int, int); typedef void (elevator_init_icq_fn) (struct io_cq *); typedef void (elevator_exit_icq_fn) (struct io_cq *); @@ -134,7 +134,7 @@ extern struct request *elv_former_request(struct request_queue *, struct request 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); +extern int elv_may_queue(struct request_queue *, int, 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); -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html