1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/pid.h b/include/linux/pid.h
index 4d179316e431..719582744a2e 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -8,7 +8,9 @@ enum pid_type
         PIDTYPE_PID,
         PIDTYPE_PGID,
         PIDTYPE_SID,
-        PIDTYPE_MAX
+        PIDTYPE_MAX,
+        /* only valid to __task_pid_nr_ns() */
+        __PIDTYPE_TGID
 };
 
 /*