From 6975c1a486a40446b5bc77a89d9c520f8296fd08 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 12 Nov 2024 18:00:39 +0100 Subject: [PATCH] block: remove the ioprio field from struct request The request ioprio is only initialized from the first attached bio, so requests without a bio already never set it. Directly use the bio field instead. Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Link: https://lore.kernel.org/r/20241112170050.1612998-3-hch@lst.de Signed-off-by: Jens Axboe --- block/blk-merge.c | 10 ++++------ block/blk-mq.c | 3 +-- include/linux/blk-mq.h | 7 +++---- include/trace/events/block.h | 6 +++--- 4 files changed, 11 insertions(+), 15 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index 2306014c108d..df36f83f3738 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -871,11 +871,10 @@ static struct request *attempt_merge(struct request_queue *q, /* Don't merge requests with different write hints. */ if (req->bio->bi_write_hint != next->bio->bi_write_hint) return NULL; + if (req->bio->bi_ioprio != next->bio->bi_ioprio) + return NULL; } - if (req->ioprio != next->ioprio) - return NULL; - if (!blk_atomic_write_mergeable_rqs(req, next)) return NULL; @@ -1007,11 +1006,10 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) /* Don't merge requests with different write hints. */ if (rq->bio->bi_write_hint != bio->bi_write_hint) return false; + if (rq->bio->bi_ioprio != bio->bi_ioprio) + return false; } - if (rq->ioprio != bio_prio(bio)) - return false; - if (blk_atomic_write_mergeable_rq_bio(rq, bio) == false) return false; diff --git a/block/blk-mq.c b/block/blk-mq.c index 65e6b86d341c..3c6cadba75e3 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -842,7 +842,7 @@ static void blk_print_req_error(struct request *req, blk_status_t status) blk_op_str(req_op(req)), (__force u32)(req->cmd_flags & ~REQ_OP_MASK), req->nr_phys_segments, - IOPRIO_PRIO_CLASS(req->ioprio)); + IOPRIO_PRIO_CLASS(req_get_ioprio(req))); } /* @@ -3306,7 +3306,6 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src, rq->special_vec = rq_src->special_vec; } rq->nr_phys_segments = rq_src->nr_phys_segments; - rq->ioprio = rq_src->ioprio; if (rq->bio && blk_crypto_rq_bio_prep(rq, rq->bio, gfp_mask) < 0) goto free_and_out; diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 2804fe181d9d..a28264442948 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -156,8 +156,6 @@ struct request { struct blk_crypto_keyslot *crypt_keyslot; #endif - unsigned short ioprio; - enum mq_rq_state state; atomic_t ref; @@ -221,7 +219,9 @@ static inline bool blk_rq_is_passthrough(struct request *rq) static inline unsigned short req_get_ioprio(struct request *req) { - return req->ioprio; + if (req->bio) + return req->bio->bi_ioprio; + return 0; } #define rq_data_dir(rq) (op_is_write(req_op(rq)) ? WRITE : READ) @@ -984,7 +984,6 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio, rq->nr_phys_segments = nr_segs; rq->__data_len = bio->bi_iter.bi_size; rq->bio = rq->biotail = bio; - rq->ioprio = bio_prio(bio); } void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx, diff --git a/include/trace/events/block.h b/include/trace/events/block.h index 1527d5d45e01..bd0ea07338eb 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -99,7 +99,7 @@ TRACE_EVENT(block_rq_requeue, __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0; __entry->sector = blk_rq_trace_sector(rq); __entry->nr_sector = blk_rq_trace_nr_sectors(rq); - __entry->ioprio = rq->ioprio; + __entry->ioprio = req_get_ioprio(rq); blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); __get_str(cmd)[0] = '\0'; @@ -136,7 +136,7 @@ DECLARE_EVENT_CLASS(block_rq_completion, __entry->sector = blk_rq_pos(rq); __entry->nr_sector = nr_bytes >> 9; __entry->error = blk_status_to_errno(error); - __entry->ioprio = rq->ioprio; + __entry->ioprio = req_get_ioprio(rq); blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); __get_str(cmd)[0] = '\0'; @@ -209,7 +209,7 @@ DECLARE_EVENT_CLASS(block_rq, __entry->sector = blk_rq_trace_sector(rq); __entry->nr_sector = blk_rq_trace_nr_sectors(rq); __entry->bytes = blk_rq_bytes(rq); - __entry->ioprio = rq->ioprio; + __entry->ioprio = req_get_ioprio(rq); blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); __get_str(cmd)[0] = '\0';