diff --git a/linux/include/linux/mm.h b/linux/include/linux/mm.h
index 5a160f3..3939f62 100644
--- a/linux/include/linux/mm.h
+++ b/linux/include/linux/mm.h
@@ -1,10 +1,22 @@
-#ifndef _MM_H
-#define _MM_H
 
-#define PAGE_SIZE 4096
+#ifndef _mm_H
+#define _mm_H
 
-extern unsigned long get_free_page(void);
+
+extern void calc_mem(void);
+extern void mem_init(long start_mem, long end_mem);
+extern void do_no_page(unsigned long error_code,unsigned long address);
+extern int share_page(unsigned long address);
+extern int try_to_share(unsigned long address, struct task_struct * p);
+extern void get_empty_page(unsigned long address);
+extern void write_verify(unsigned long address);
+extern void do_wp_page(unsigned long error_code,unsigned long address);
+extern void un_wp_page(unsigned long * table_entry);
 extern unsigned long put_page(unsigned long page,unsigned long address);
+extern int copy_page_tables(unsigned long from,unsigned long to,long size);
+extern int free_page_tables(unsigned long from,unsigned long size);
 extern void free_page(unsigned long addr);
-
-#endif
+extern unsigned long get_free_page(void);
+extern void oom(void);
+extern void do_exit(long code);
+#endif // MACRO