mm: clean up and clarify lruvec lookup procedure

[linux.git] / include / linux / pid_namespace.h

diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index 49538b172483c4f519100e1617f42d0f897bfbaa..2ed6af88794b0bf9adffdcf861cf9f0358305630 100644 (file)
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -12,6 +12,8 @@
 #include <linux/ns_common.h>
 #include <linux/idr.h>
 
+/* MAX_PID_NS_LEVEL is needed for limiting size of 'struct pid' */
+#define MAX_PID_NS_LEVEL 32
 
 struct fs_pin;