blk_rq_map_user_iov  317 block/scsi_ioctl.c 		ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count,
blk_rq_map_user_iov  753 include/linux/blkdev.h extern int blk_rq_map_user_iov(struct request_queue *, struct request *,