diff options
| 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 /drivers/md/dm.c | |
| parent | de474b550e2548f9844e872f1c0bf94460c7c84c (diff) | |
| download | linux-5a97806f7dc069d9561d9930a2ae108700e222ab.tar.bz2 | |
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 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 99642f69bfa7..fbcffcfb2304 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1181,7 +1181,7 @@ static sector_t max_io_len(struct dm_target *ti, sector_t sector) * Does the target need to split IO even further? * - varied (per target) IO splitting is a tenet of DM; this * explains why stacked chunk_sectors based splitting via - * blk_queue_split() isn't possible here. + * bio_split_to_limits() isn't possible here. */ if (!ti->max_io_len) return len; @@ -1751,10 +1751,10 @@ static void dm_split_and_process_bio(struct mapped_device *md, is_abnormal = is_abnormal_io(bio); if (unlikely(is_abnormal)) { /* - * Use blk_queue_split() for abnormal IO (e.g. discard, etc) + * Use bio_split_to_limits() for abnormal IO (e.g. discard, etc) * otherwise associated queue_limits won't be imposed. */ - blk_queue_split(&bio); + bio = bio_split_to_limits(bio); } init_clone_info(&ci, md, map, bio, is_abnormal); |