diff --git a/drivers/staging/lustre/lustre/include/lustre_disk.h b/drivers/staging/lustre/lustre/include/lustre_disk.h
index 9228b165b258..1de9a8bed497 100644
--- a/drivers/staging/lustre/lustre/include/lustre_disk.h
+++ b/drivers/staging/lustre/lustre/include/lustre_disk.h
@@ -50,6 +50,7 @@
 
 #include <linux/libcfs/libcfs.h>
 #include <linux/lnet/types.h>
+#include <linux/backing-dev.h>
 
 /****************** on-disk files *********************/