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| author | Christoph Hellwig <hch@lst.de> | 2019-06-06 13:29:01 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-06-20 19:29:22 +0300 |
| commit | 14ccb66b3f585b2bc21e7256c96090abed5a512c (patch) | |
| tree | 7b0d48d59ee474ac1a590352507c7890c16f1e8d /block/blk-mq-sched.h | |
| parent | f924cddebc900f7cb10d5538d69523e558fa681c (diff) | |
| download | linux-14ccb66b3f585b2bc21e7256c96090abed5a512c.tar.xz | |
block: remove the bi_phys_segments field in struct bio
We only need the number of segments in the blk-mq submission path.
Remove the field from struct bio, and return it from a variant of
blk_queue_split instead of that it can passed as an argument to
those functions that need the value.
This also means we stop recounting segments except for cloning
and partial segments.
To keep the number of arguments in this how path down remove
pointless struct request_queue arguments from any of the functions
that had it and grew a nr_segs argument.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-sched.h')
| -rw-r--r-- | block/blk-mq-sched.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h index 3cf92cbbd8ac..cf22ab00fefb 100644 --- a/block/blk-mq-sched.h +++ b/block/blk-mq-sched.h @@ -12,8 +12,9 @@ void blk_mq_sched_assign_ioc(struct request *rq); void blk_mq_sched_request_inserted(struct request *rq); bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio, - struct request **merged_request); -bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio); + unsigned int nr_segs, struct request **merged_request); +bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio, + unsigned int nr_segs); bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq); void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx); void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx); @@ -31,12 +32,13 @@ void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e); void blk_mq_sched_free_requests(struct request_queue *q); static inline bool -blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio) +blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio, + unsigned int nr_segs) { if (blk_queue_nomerges(q) || !bio_mergeable(bio)) return false; - return __blk_mq_sched_bio_merge(q, bio); + return __blk_mq_sched_bio_merge(q, bio, nr_segs); } static inline bool |