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| author | Christoph Hellwig <hch@lst.de> | 2022-07-27 12:22:55 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-02 17:22:53 -0600 |
| commit | 5a97806f7dc069d9561d9930a2ae108700e222ab (patch) | |
| tree | 60b436ff4a9279e7b32e1c41b9194be5a665ca43 /block/blk.h | |
| parent | de474b550e2548f9844e872f1c0bf94460c7c84c (diff) | |
| download | linux-5a97806f7dc069d9561d9930a2ae108700e222ab.tar.gz linux-5a97806f7dc069d9561d9930a2ae108700e222ab.tar.bz2 linux-5a97806f7dc069d9561d9930a2ae108700e222ab.zip | |
block: change the blk_queue_split calling convention
The double indirect bio leads to somewhat suboptimal code generation.
Instead return the (original or split) bio, and make sure the
request_queue arguments to the lower level helpers is passed after the
bio to avoid constant reshuffling of the argument passing registers.
Also give it and the helpers used to implement it more descriptive names.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220727162300.3089193-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk.h')
| -rw-r--r-- | block/blk.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk.h b/block/blk.h index 1d83b1d41cd1..623be4c2e60c 100644 --- a/block/blk.h +++ b/block/blk.h @@ -288,7 +288,7 @@ ssize_t part_timeout_show(struct device *, struct device_attribute *, char *); ssize_t part_timeout_store(struct device *, struct device_attribute *, const char *, size_t); -static inline bool blk_may_split(struct request_queue *q, struct bio *bio) +static inline bool bio_may_exceed_limits(struct bio *bio, struct request_queue *q) { switch (bio_op(bio)) { case REQ_OP_DISCARD: @@ -311,8 +311,8 @@ static inline bool blk_may_split(struct request_queue *q, struct bio *bio) bio->bi_io_vec->bv_len + bio->bi_io_vec->bv_offset > PAGE_SIZE; } -void __blk_queue_split(struct request_queue *q, struct bio **bio, - unsigned int *nr_segs); +struct bio *__bio_split_to_limits(struct bio *bio, struct request_queue *q, + unsigned int *nr_segs); int ll_back_merge_fn(struct request *req, struct bio *bio, unsigned int nr_segs); bool blk_attempt_req_merge(struct request_queue *q, struct request *rq, |