X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Flinux%2Fsysctl.h;h=11684d9e6bd2391374f2cc3fd9ff7d4f9df4e11d;hb=4a37390de98547e42ad0cb617bd2f2d452f2d4c7;hp=7bb5cb64f3b84798db8023be585755d94af785a0;hpb=772320e84588dcbe1600ffb83e5f328f2209ac2a;p=firefly-linux-kernel-4.4.55.git

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;