bio_map_user_iov  214 block/blk-map.c 		bio = bio_map_user_iov(q, NULL, iov, iov_count, read, gfp_mask);
bio_map_user_iov  872 fs/bio.c       	return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm, gfp_mask);
bio_map_user_iov  343 include/linux/bio.h extern struct bio *bio_map_user_iov(struct request_queue *,