+struct vlist_tree;
+struct vlist_node;
+
+typedef void (*vlist_update_cb)(struct vlist_tree *tree,
+ struct vlist_node *node_new,
+ struct vlist_node *node_old);
+
+struct vlist_tree {
+ struct avl_tree avl;
+
+ vlist_update_cb update;
+
+ int data_offset;
+ int data_len;
+
+ int version;
+};
+
+struct vlist_node {
+ struct avl_node avl;
+ int version;
+};
+
+void __vlist_init(struct vlist_tree *tree, vlist_update_cb update, int offset, int len);
+
+#define vlist_init(tree, update, type, vlist, first, last) \
+ __vlist_init(tree, update, offsetof(type, first) - offsetof(type, vlist), \
+ offsetof(type, last) - offsetof(type, first) + sizeof(((type *) 0)->last))
+
+void vlist_add(struct vlist_tree *tree, struct vlist_node *node);
+void vlist_delete(struct vlist_tree *tree, struct vlist_node *node);
+void vlist_flush(struct vlist_tree *tree);
+void vlist_flush_all(struct vlist_tree *tree);
+