--- zzzz-none-000/linux-3.10.107/include/linux/pid.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/pid.h	2021-02-04 17:41:59.000000000 +0000
@@ -86,11 +86,9 @@
 extern struct pid *get_task_pid(struct task_struct *task, enum pid_type type);
 
 /*
- * attach_pid() and detach_pid() must be called with the tasklist_lock
- * write-held.
+ * these helpers must be called with the tasklist_lock write-held.
  */
-extern void attach_pid(struct task_struct *task, enum pid_type type,
-			struct pid *pid);
+extern void attach_pid(struct task_struct *task, enum pid_type);
 extern void detach_pid(struct task_struct *task, enum pid_type);
 extern void change_pid(struct task_struct *task, enum pid_type,
 			struct pid *pid);