diff -ur lin_tape-3.0.23/upper.c lin_tape-3.0.23.iov/upper.c
--- lin_tape-3.0.23/upper.c	2018-04-07 22:18:09.417415364 +0200
+++ lin_tape-3.0.23.iov/upper.c	2018-04-07 22:19:26.582769230 +0200
@@ -388,6 +388,22 @@
 	if (hdr->iovec_count) {
 		const int size = sizeof(struct sg_iovec) * hdr->iovec_count;
 		size_t iov_data_len;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)
+		struct iov_iter i;
+
+		sg_iov = kmalloc(size, GFP_KERNEL);
+		if (!sg_iov) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		ret = import_iovec(hdr->dxfer_direction == SG_DXFER_TO_DEV ? WRITE : READ, hdr->dxferp, hdr->iovec_count, 0, (struct iovec **)&sg_iov, &i);
+		if (ret < 0)
+			goto out;
+
+		iov_iter_truncate(&i, hdr->dxfer_len);
+		iov_data_len = hdr->dxfer_len;
+#else
 		struct iovec *iov;
 		int i;
 
@@ -426,6 +442,7 @@
 							hdr->dxfer_len);
 			iov_data_len = hdr->dxfer_len;
 		}
+#endif
 
 		pfo_cmd.buffer = sg_iov;
 		pfo_cmd.bufflen = iov_data_len;