12 static bool iovec_gap_to_prv(struct request_queue *q,  in iovec_gap_to_prv()  argument
17 	if (!queue_virt_boundary(q))  in iovec_gap_to_prv()
26 	return (((unsigned long)cur->iov_base & queue_virt_boundary(q)) ||  in iovec_gap_to_prv()
27 		prev_end & queue_virt_boundary(q));  in iovec_gap_to_prv()
30 int blk_rq_append_bio(struct request_queue *q, struct request *rq,  in blk_rq_append_bio()  argument
34 		blk_rq_bio_prep(q, rq, bio);  in blk_rq_append_bio()
35 	else if (!ll_back_merge_fn(q, rq, bio))  in blk_rq_append_bio()
81 int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,  in blk_rq_map_user_iov()  argument
102 		if ((uaddr & queue_dma_alignment(q)) ||  in blk_rq_map_user_iov()
103 		    iovec_gap_to_prv(q, &prv, &iov))  in blk_rq_map_user_iov()
110 	if (unaligned || (q->dma_pad_mask & iter->count) || map_data)  in blk_rq_map_user_iov()
111 		bio = bio_copy_user_iov(q, map_data, iter, gfp_mask);  in blk_rq_map_user_iov()
113 		bio = bio_map_user_iov(q, iter, gfp_mask);  in blk_rq_map_user_iov()
136 	blk_queue_bounce(q, &bio);  in blk_rq_map_user_iov()
138 	blk_rq_bio_prep(q, rq, bio);  in blk_rq_map_user_iov()
143 int blk_rq_map_user(struct request_queue *q, struct request *rq,  in blk_rq_map_user()  argument
154 	return blk_rq_map_user_iov(q, rq, map_data, &i, gfp_mask);  in blk_rq_map_user()
203 int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,  in blk_rq_map_kern()  argument
212 	if (len > (queue_max_hw_sectors(q) << 9))  in blk_rq_map_kern()
217 	do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf);  in blk_rq_map_kern()
219 		bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading);  in blk_rq_map_kern()
221 		bio = bio_map_kern(q, kbuf, len, gfp_mask);  in blk_rq_map_kern()
232 	ret = blk_rq_append_bio(q, rq, bio);  in blk_rq_map_kern()
239 	blk_queue_bounce(q, &rq->bio);  in blk_rq_map_kern()