diff --git a/include/linux/sched.h b/include/linux/sched.h
index e3539c14e47..b7d31e2e172 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -911,7 +911,6 @@ static inline int pid_alive(struct task_struct *p)
 extern void free_task(struct task_struct *tsk);
 #define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
 
-extern void __put_task_struct_cb(struct rcu_head *rhp);
 extern void __put_task_struct(struct task_struct *t);
 
 static inline void put_task_struct(struct task_struct *t)
diff --git a/kernel/fork.c b/kernel/fork.c
index 3384eb89cb1..54b15f8cda5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -124,12 +124,6 @@ void __put_task_struct(struct task_struct *tsk)
 		free_task(tsk);
 }
 
-void __put_task_struct_cb(struct rcu_head *rhp)
-{
-	struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);
-	__put_task_struct(tsk);
-}
-
 void __init fork_init(unsigned long mempages)
 {
 #ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR