1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 1a9ef3e627d1..5dce5c21822c 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -352,6 +352,7 @@ extern nodemask_t node_possible_map;
 #define node_possible(node)     node_isset((node), node_possible_map)
 #define first_online_node       first_node(node_online_map)
 #define next_online_node(nid)   next_node((nid), node_online_map)
+int highest_possible_node_id(void);
 #else
 #define num_online_nodes()      1
 #define num_possible_nodes()    1
@@ -359,6 +360,7 @@ extern nodemask_t node_possible_map;
 #define node_possible(node)     ((node) == 0)
 #define first_online_node       0
 #define next_online_node(nid)   (MAX_NUMNODES)
+#define highest_possible_node_id()      0
 #endif
 
 #define any_online_node(mask)                   \