diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 022b761dbf0a187478680fe3cc35198e145c11a5..8a3589c2542c90d5951762dcbcb08692002aeaa6 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -516,6 +516,7 @@ enum pnfs_layouttype {
 	LAYOUT_NFSV4_1_FILES  = 1,
 	LAYOUT_OSD2_OBJECTS = 2,
 	LAYOUT_BLOCK_VOLUME = 3,
+	LAYOUT_TYPE_MAX
 };
 
 /* used for both layout return and recall */