diff --git a/include/linux/sched.h b/include/linux/sched.h
index ec80684a0127a966df302678906bfb8292405cff..cdd5407b37e27ea14fdabad7becf8607a7d0e976 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1950,8 +1950,6 @@ extern struct task_struct *find_task_by_vpid(pid_t nr);
 extern struct task_struct *find_task_by_pid_ns(pid_t nr,
 		struct pid_namespace *ns);
 
-extern void __set_special_pids(struct pid *pid);
-
 /* per-UID process charging. */
 extern struct user_struct * alloc_uid(kuid_t);
 static inline struct user_struct *get_uid(struct user_struct *u)
diff --git a/kernel/exit.c b/kernel/exit.c
index 7bb73f9d09dbeedcc6c07f6a8dc8257f76fc4963..3a77cd9390a13cafeabec3a228b41ce74fa9ef36 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -312,17 +312,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
 	}
 }
 
-void __set_special_pids(struct pid *pid)
-{
-	struct task_struct *curr = current->group_leader;
-
-	if (task_session(curr) != pid)
-		change_pid(curr, PIDTYPE_SID, pid);
-
-	if (task_pgrp(curr) != pid)
-		change_pid(curr, PIDTYPE_PGID, pid);
-}
-
 /*
  * Let kernel threads use this to say that they allow a certain signal.
  * Must not be used if kthread was cloned with CLONE_SIGHAND.
diff --git a/kernel/sys.c b/kernel/sys.c
index 7bf50dcc6d5345d0a2919287f2b5e51577301132..071de900c824540abd7e42ee942e2ed89767643b 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1309,6 +1309,17 @@ SYSCALL_DEFINE1(getsid, pid_t, pid)
 	return retval;
 }
 
+static void set_special_pids(struct pid *pid)
+{
+	struct task_struct *curr = current->group_leader;
+
+	if (task_session(curr) != pid)
+		change_pid(curr, PIDTYPE_SID, pid);
+
+	if (task_pgrp(curr) != pid)
+		change_pid(curr, PIDTYPE_PGID, pid);
+}
+
 SYSCALL_DEFINE0(setsid)
 {
 	struct task_struct *group_leader = current->group_leader;
@@ -1328,7 +1339,7 @@ SYSCALL_DEFINE0(setsid)
 		goto out;
 
 	group_leader->signal->leader = 1;
-	__set_special_pids(sid);
+	set_special_pids(sid);
 
 	proc_clear_tty(group_leader);