157 void bvec_free(mempool_t *pool, struct bio_vec *bv, unsigned short nr_vecs)  in bvec_free()  argument
162 		mempool_free(bv, pool);  in bvec_free()
164 		kmem_cache_free(biovec_slab(nr_vecs)->slab, bv);  in bvec_free()
534 	struct bio_vec bv;  in zero_fill_bio()  local
537 	bio_for_each_segment(bv, bio, iter)  in zero_fill_bio()
538 		memzero_bvec(&bv);  in zero_fill_bio()
554 	struct bio_vec bv;  in bio_truncate()  local
565 	bio_for_each_segment(bv, bio, iter) {  in bio_truncate()
566 		if (done + bv.bv_len > new_size) {  in bio_truncate()
573 			zero_user(bv.bv_page, bv.bv_offset + offset,  in bio_truncate()
574 				  bv.bv_len - offset);  in bio_truncate()
577 		done += bv.bv_len;  in bio_truncate()
780 static inline bool page_is_mergeable(const struct bio_vec *bv,  in page_is_mergeable()  argument
784 	size_t bv_end = bv->bv_offset + bv->bv_len;  in page_is_mergeable()
785 	phys_addr_t vec_end_addr = page_to_phys(bv->bv_page) + bv_end - 1;  in page_is_mergeable()
790 	if (xen_domain() && !xen_biovec_phys_mergeable(bv, page))  in page_is_mergeable()
796 	return (bv->bv_page + bv_end / PAGE_SIZE) == (page + off / PAGE_SIZE);  in page_is_mergeable()
808 	struct bio_vec *bv = &bio->bi_io_vec[bio->bi_vcnt - 1];  in bio_try_merge_hw_seg()  local
810 	phys_addr_t addr1 = page_to_phys(bv->bv_page) + bv->bv_offset;  in bio_try_merge_hw_seg()
815 	if (len > queue_max_segment_size(q) - bv->bv_len)  in bio_try_merge_hw_seg()
953 		struct bio_vec *bv = &bio->bi_io_vec[bio->bi_vcnt - 1];  in __bio_try_merge_page()  local
955 		if (page_is_mergeable(bv, page, len, off, same_page)) {  in __bio_try_merge_page()
960 			bv->bv_len += len;  in __bio_try_merge_page()
982 	struct bio_vec *bv = &bio->bi_io_vec[bio->bi_vcnt];  in __bio_add_page()  local
987 	bv->bv_page = page;  in __bio_add_page()
988 	bv->bv_offset = off;  in __bio_add_page()
989 	bv->bv_len = len;  in __bio_add_page()
1124 	struct bio_vec *bv = bio->bi_io_vec + bio->bi_vcnt;  in __bio_iov_iter_get_pages()  local
1125 	struct page **pages = (struct page **)bv;  in __bio_iov_iter_get_pages()