114 		struct bio *split;  in bio_submit_split()  local
116 		split = bio_split(bio, split_sectors, GFP_NOIO,  in bio_submit_split()
118 		if (IS_ERR(split)) {  in bio_submit_split()
119 			split_sectors = PTR_ERR(split);  in bio_submit_split()
122 		split->bi_opf |= REQ_NOMERGE;  in bio_submit_split()
123 		blkcg_bio_issue_init(split);  in bio_submit_split()
124 		bio_chain(split, bio);  in bio_submit_split()
125 		trace_block_split(split, bio->bi_iter.bi_sector);  in bio_submit_split()
128 		return split;  in bio_submit_split()
250  * bvec_split_segs - verify whether or not a bvec should be split in the middle
251  * @lim:      [in] queue limits to split based on
263  * big to fit in a single segment and hence that it has to be split in the
291 	/* tell the caller to split the bvec if it is too big to fit */  in bvec_split_segs()
304  * bio_split_rw_at - check if and where to split a read/write bio
305  * @bio:  [in] bio to be split
306  * @lim:  [in] queue limits to split based on
310  * Find out if @bio needs to be split to fit the queue limits in @lim and a
312  * split, 0 if the bio doesn't have to be split, or a positive sector offset if
313  * @bio needs to be split.
328 			goto split;  in bio_split_rw_at()
338 				goto split;  in bio_split_rw_at()
347 split:  in bio_split_rw_at()
362 	 * split size so that each bio is properly block size aligned, even if  in bio_split_rw_at()
370 	 * big IO can be trival, disable iopoll when split needed.  in bio_split_rw_at()
386  * REQ_OP_ZONE_APPEND bios must never be split by the block layer.
425  * bio_split_to_limits - split a bio to fit the queue limits
426  * @bio:     bio to be split
429  * if so split off a bio fitting the limits from the beginning of @bio and
432  * The split bio is allocated from @q->bio_split, which is provided by the