129 static int bio_copy_user_iov(struct request *rq, struct rq_map_data *map_data,  in bio_copy_user_iov()  argument
138 	unsigned int offset = map_data ? offset_in_page(map_data->offset) : 0;  in bio_copy_user_iov()
149 	bmd->is_our_pages = !map_data;  in bio_copy_user_iov()
150 	bmd->is_null_mapped = (map_data && map_data->null_mapped);  in bio_copy_user_iov()
160 	if (map_data) {  in bio_copy_user_iov()
161 		nr_pages = 1U << map_data->page_order;  in bio_copy_user_iov()
162 		i = map_data->offset / PAGE_SIZE;  in bio_copy_user_iov()
172 		if (map_data) {  in bio_copy_user_iov()
173 			if (i == map_data->nr_entries * nr_pages) {  in bio_copy_user_iov()
178 			page = map_data->pages[i / nr_pages];  in bio_copy_user_iov()
191 			if (!map_data)  in bio_copy_user_iov()
200 	if (map_data)  in bio_copy_user_iov()
201 		map_data->offset += bio->bi_iter.bi_size;  in bio_copy_user_iov()
207 	     (!map_data || !map_data->null_mapped)) ||  in bio_copy_user_iov()
208 	    (map_data && map_data->from_user)) {  in bio_copy_user_iov()
225 	if (!map_data)  in bio_copy_user_iov()
623 			struct rq_map_data *map_data,  in blk_rq_map_user_iov()  argument
632 	if (map_data)  in blk_rq_map_user_iov()
658 			ret = bio_copy_user_iov(rq, map_data, &i, gfp_mask);  in blk_rq_map_user_iov()
678 		    struct rq_map_data *map_data, void __user *ubuf,  in blk_rq_map_user()  argument
688 	return blk_rq_map_user_iov(q, rq, map_data, &i, gfp_mask);  in blk_rq_map_user()
692 int blk_rq_map_user_io(struct request *req, struct rq_map_data *map_data,  in blk_rq_map_user_io()  argument
717 		ret = blk_rq_map_user_iov(req->q, req, map_data, &iter,  in blk_rq_map_user_io()
721 		ret = blk_rq_map_user(req->q, req, map_data, ubuf, buf_len,  in blk_rq_map_user_io()