Commit e0ed2bca authored by Yu Kuai's avatar Yu Kuai Committed by Jens Axboe
Browse files

md/raid0: convert raid0_make_request() to use bio_submit_split_bioset() 



Currently, raid0_make_request() will remap the original bio to underlying
disks to prevent reordered IO. Now that bio_submit_split_bioset() will put
original bio to the head of current->bio_list, it's safe converting to use
this helper and bio will still be ordered.

CC: Jan Kara <jack@suse.cz>
Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent b2f59740

drivers/md/raid0.c

+2 −11
Original line number Diff line number Diff line
@@ -607,21 +607,12 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio) 
		 : sector_div(sector, chunk_sects));



	if (sectors < bio_sectors(bio)) {

		struct bio *split = bio_split(bio, sectors, GFP_NOIO,

		bio = bio_submit_split_bioset(bio, sectors,

					      &mddev->bio_set);



		if (IS_ERR(split)) {

			bio->bi_status = errno_to_blk_status(PTR_ERR(split));

			bio_endio(bio);

		if (!bio)

			return true;

	}



		bio_chain(split, bio);

		trace_block_split(split, bio->bi_iter.bi_sector);

		raid0_map_submit_bio(mddev, bio);

		bio = split;

	}



	raid0_map_submit_bio(mddev, bio);

	return true;

}