https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-3.18.y&id=63407c4d1f9f64015974206e9bf40b318fdd74ee

1. Adjust to upstream adding an enum value to the end of the enum definition
   (where we also add one).

2. Continue to wrap the body of task_tgid_vnr() with vx_map_tgid(), similar to
   task_pid_vnr().

diff -urNpd linux-3.18.67-vs2.3.7.5~/include/linux/pid.h linux-3.18.67-vs2.3.7.5/include/linux/pid.h
--- linux-3.18.67-vs2.3.7.5~/include/linux/pid.h	2017-08-24 21:31:56.212586227 -0500
+++ linux-3.18.67-vs2.3.7.5/include/linux/pid.h	2017-08-25 10:02:42.851831581 -0500
@@ -10,7 +10,8 @@ enum pid_type
 	PIDTYPE_SID,
 	PIDTYPE_MAX,
 	/* only valid to __task_pid_nr_ns() */
-	__PIDTYPE_TGID
+	__PIDTYPE_TGID,
+	PIDTYPE_REALPID
 };
 
 /*
diff -urNpd linux-3.18.67-vs2.3.7.5~/include/linux/sched.h linux-3.18.67-vs2.3.7.5/include/linux/sched.h
--- linux-3.18.67-vs2.3.7.5~/include/linux/sched.h	2017-08-24 21:31:56.212586227 -0500
+++ linux-3.18.67-vs2.3.7.5/include/linux/sched.h	2017-08-25 10:13:28.925812909 -0500
@@ -1824,7 +1824,7 @@ static inline pid_t task_tgid_nr_ns(stru
 
 static inline pid_t task_tgid_vnr(struct task_struct *tsk)
 {
-	return __task_pid_nr_ns(tsk, __PIDTYPE_TGID, NULL);
+	return vx_map_tgid(__task_pid_nr_ns(tsk, __PIDTYPE_TGID, NULL));
 }
 
 static inline pid_t task_ppid_nr_ns(const struct task_struct *tsk, struct pid_namespace *ns)