201 			    const struct bio_vec *bv, unsigned *nsegs,  in bvec_split_segs()  argument
206 	unsigned len = min(bv->bv_len, max_len);  in bvec_split_segs()
211 		seg_size = get_max_segment_size(q, bv->bv_page,  in bvec_split_segs()
212 						bv->bv_offset + total_len);  in bvec_split_segs()
219 		if ((bv->bv_offset + total_len) & queue_virt_boundary(q))  in bvec_split_segs()
226 	return len > 0 || bv->bv_len > max_len;  in bvec_split_segs()
253 	struct bio_vec bv, bvprv, *bvprvp = NULL;  in blk_bio_segment_split()  local
259 	bio_for_each_bvec(bv, bio, iter) {  in blk_bio_segment_split()
264 		if (bvprvp && bvec_gap_to_prev(q, bvprvp, bv.bv_offset))  in blk_bio_segment_split()
268 		    sectors + (bv.bv_len >> 9) <= max_sectors &&  in blk_bio_segment_split()
269 		    bv.bv_offset + bv.bv_len <= PAGE_SIZE) {  in blk_bio_segment_split()
271 			sectors += bv.bv_len >> 9;  in blk_bio_segment_split()
272 		} else if (bvec_split_segs(q, &bv, &nsegs, &sectors, max_segs,  in blk_bio_segment_split()
277 		bvprv = bv;  in blk_bio_segment_split()
375 	struct bio_vec bv;  in blk_recalc_rq_segments()  local
397 	rq_for_each_bvec(bv, rq, iter)  in blk_recalc_rq_segments()
398 		bvec_split_segs(rq->q, &bv, &nr_phys_segs, &nr_sectors,  in blk_recalc_rq_segments()
455 static inline int __blk_bvec_map_sg(struct bio_vec bv,  in __blk_bvec_map_sg()  argument
459 	sg_set_page(*sg, bv.bv_page, bv.bv_len, bv.bv_offset);  in __blk_bvec_map_sg()