blk_rq_map_user_iov
EXPORT_SYMBOL(blk_rq_map_user_iov);
return blk_rq_map_user_iov(q, rq, map_data, &i, gfp_mask);
ret = blk_rq_map_user_iov(req->q, req, map_data, &iter,
ret = blk_rq_map_user_iov(q, req, NULL, iter, GFP_KERNEL);
int blk_rq_map_user_iov(struct request_queue *, struct request *,