diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index 972b12b..2b8df8b 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -30,6 +30,8 @@
 #ifndef _AGP_BACKEND_H
 #define _AGP_BACKEND_H 1
 
+#include <linux/list.h>
+
 enum chipset_type {
 	NOT_SUPPORTED,
 	SUPPORTED,
@@ -78,6 +80,8 @@
 	bool is_bound;
 	bool is_flushed;
         bool vmalloc_flag;
+	/* list of agp_memory mapped to the aperture */
+	struct list_head mapped_list;
 };
 
 #define AGP_NORMAL_MEMORY 0
@@ -96,6 +100,7 @@
 extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *);
 extern int agp_bind_memory(struct agp_memory *, off_t);
 extern int agp_unbind_memory(struct agp_memory *);
+extern int agp_rebind_memory(void);
 extern void agp_enable(struct agp_bridge_data *, u32);
 extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
 extern void agp_backend_release(struct agp_bridge_data *);