+static void splice_unmap_io_u(struct thread_data *td, struct io_u *io_u)
+{
+ struct spliceio_data *sd = td->io_ops->data;
+ struct iovec iov = {
+ .iov_base = io_u->xfer_buf,
+ .iov_len = io_u->xfer_buflen,
+ };
+
+ vmsplice(sd->pipe[0], &iov, 1, SPLICE_F_UNMAP);
+}
+