1 files changed, 10 insertions, 4 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 7bb5cb64f3b8..11684d9e6bd2 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -930,6 +930,7 @@ enum
 
 #ifdef __KERNEL__
 #include <linux/list.h>
+#include <linux/rcupdate.h>
 
 /* For the /proc/sys support */
 struct ctl_table;
@@ -1037,10 +1038,15 @@ struct ctl_table_root {
    struct ctl_table trees. */
 struct ctl_table_header
 {
-        struct ctl_table *ctl_table;
-        struct list_head ctl_entry;
-        int used;
-        int count;
+        union {
+                struct {
+                        struct ctl_table *ctl_table;
+                        struct list_head ctl_entry;
+                        int used;
+                        int count;
+                };
+                struct rcu_head rcu;
+        };
         struct completion *unregistering;
         struct ctl_table *ctl_table_arg;
         struct ctl_table_root *root;