1 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 24141b4d1a11..d0437f36921f 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -947,6 +947,22 @@ struct ctl_table;
 struct nsproxy;
 struct ctl_table_root;
 
+struct ctl_table_set {
+        struct list_head list;
+        struct ctl_table_set *parent;
+        int (*is_seen)(struct ctl_table_set *);
+};
+
+extern void setup_sysctl_set(struct ctl_table_set *p,
+        struct ctl_table_set *parent,
+        int (*is_seen)(struct ctl_table_set *));
+
+struct ctl_table_header;
+
+extern void sysctl_head_get(struct ctl_table_header *);
+extern void sysctl_head_put(struct ctl_table_header *);
+extern int sysctl_is_seen(struct ctl_table_header *);
+extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *);
 extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
 extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
                                                 struct ctl_table_header *prev);
@@ -1049,8 +1065,8 @@ struct ctl_table
 
 struct ctl_table_root {
         struct list_head root_list;
-        struct list_head header_list;
-        struct list_head *(*lookup)(struct ctl_table_root *root,
+        struct ctl_table_set default_set;
+        struct ctl_table_set *(*lookup)(struct ctl_table_root *root,
                                            struct nsproxy *namespaces);
         int (*permissions)(struct ctl_table_root *root,
                         struct nsproxy *namespaces, struct ctl_table *table);
@@ -1063,9 +1079,14 @@ struct ctl_table_header
         struct ctl_table *ctl_table;
         struct list_head ctl_entry;
         int used;
+        int count;
         struct completion *unregistering;
         struct ctl_table *ctl_table_arg;
         struct ctl_table_root *root;
+        struct ctl_table_set *set;
+        struct ctl_table *attached_by;
+        struct ctl_table *attached_to;
+        struct ctl_table_header *parent;
 };
 
 /* struct ctl_path describes where in the hierarchy a table is added */