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block: factor out a helper bio_submit_split_bioset()

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[ Upstream commit e37b5596a19be9a150cb194ec32e78f295a3574b ]

No functional changes are intended, some drivers like mdraid will split
bio by internal processing, prepare to unify bio split codes.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: b2f5974079d8 ("block: fix ordering of recursive split IO")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yu Kuai
2025-09-10 14:30:46 +08:00
committed by Greg Kroah-Hartman
parent 8668afa4d6
commit 9f7b1537e3
2 changed files with 42 additions and 19 deletions
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include/linux/blkdev.h
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@@ -999,6 +999,8 @@ extern int blk_register_queue(struct gendisk *disk);
extern void blk_unregister_queue(struct gendisk *disk);
void submit_bio_noacct(struct bio *bio);
struct bio *bio_split_to_limits(struct bio *bio);
struct bio *bio_submit_split_bioset(struct bio *bio, unsigned int split_sectors,
struct bio_set *bs);
extern int blk_lld_busy(struct request_queue *q);
extern int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags);