diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1301c08..f4d969e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1523,9 +1523,8 @@
  *      type and namespace specified
  * find_task_by_pid_ns():
  *      finds a task by its pid in the specified namespace
- * find_task_by_pid_type():
- *      finds a task by its global id with the specified type, e.g.
- *      by global session id
+ * find_task_by_vpid():
+ *      finds a task by its virtual pid
  * find_task_by_pid():
  *      finds a task by its global pid
  *
@@ -1535,12 +1534,10 @@
 extern struct task_struct *find_task_by_pid_type_ns(int type, int pid,
 		struct pid_namespace *ns);
 
-#define find_task_by_pid_ns(nr, ns)	\
-		find_task_by_pid_type_ns(PIDTYPE_PID, nr, ns)
-#define find_task_by_pid_type(type, nr)	\
-		find_task_by_pid_type_ns(type, nr, &init_pid_ns)
-#define find_task_by_pid(nr)		\
-		find_task_by_pid_type(PIDTYPE_PID, nr)
+extern struct task_struct *find_task_by_pid(pid_t nr);
+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(pid_t session, pid_t pgrp);