bio_copy_user      61 block/blk-map.c 		bio = bio_copy_user(q, map_data, uaddr, len, reading, gfp_mask);
bio_copy_user    1055 fs/bio.c       	bio = bio_copy_user(q, NULL, (unsigned long)data, len, 1, gfp_mask);
bio_copy_user     353 include/linux/bio.h extern struct bio *bio_copy_user(struct request_queue *, struct rq_map_data *,