diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
new file mode 100644
index 0000000..e04c4fe
--- /dev/null
+++ b/include/linux/raid/linear.h
@@ -0,0 +1,27 @@
+#ifndef _LINEAR_H
+#define _LINEAR_H
+
+#include <linux/raid/md.h>
+
+struct dev_info {
+	mdk_rdev_t	*rdev;
+	sector_t	size;
+	sector_t	offset;
+};
+
+typedef struct dev_info dev_info_t;
+
+struct linear_private_data
+{
+	dev_info_t		**hash_table;
+	dev_info_t		*smallest;
+	int			nr_zones;
+	dev_info_t		disks[0];
+};
+
+
+typedef struct linear_private_data linear_conf_t;
+
+#define mddev_to_conf(mddev) ((linear_conf_t *) mddev->private)
+
+#endif