diff --git a/fs/proc/base.c b/fs/proc/base.c
index fc23f62bb0b8dd5b54caf3cfc0846580a9f0a531..5949d0ac30f2d8b6f0b3a3027a0872c4244f49c6 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -427,9 +427,6 @@ static const struct file_operations proc_lstats_operations = {
 
 #endif
 
-/* The badness from the OOM killer */
-unsigned long badness(struct task_struct *p, struct mem_cgroup *mem,
-		      nodemask_t *nodemask, unsigned long uptime);
 static int proc_oom_score(struct task_struct *task, char *buffer)
 {
 	unsigned long points = 0;
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 9d7c34a741e7b8c139f6bc3d66035ea020423315..40e5e3a6bc2018a2fee2bf43777ad749bce63101 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -14,6 +14,8 @@
 
 struct zonelist;
 struct notifier_block;
+struct mem_cgroup;
+struct task_struct;
 
 /*
  * Types of limitations to the nodes from which allocations may occur
@@ -45,6 +47,10 @@ static inline void oom_killer_enable(void)
 	oom_killer_disabled = false;
 }
 
+/* The badness from the OOM killer */
+extern unsigned long badness(struct task_struct *p, struct mem_cgroup *mem,
+		      const nodemask_t *nodemask, unsigned long uptime);
+
 /* sysctls */
 extern int sysctl_oom_dump_tasks;
 extern int sysctl_oom_kill_allocating_task;