--- 2.4.22-pre7aa1.clean/arch/alpha/kernel/alpha_ksyms.c	2003-07-25 23:18:37.000000000 -0500
+++ 2.4.22-pre7aa1/arch/alpha/kernel/alpha_ksyms.c	2003-07-25 23:25:55.000000000 -0500
@@ -200,6 +200,8 @@
 EXPORT_SYMBOL(down_trylock);
 EXPORT_SYMBOL(up);
 
+EXPORT_SYMBOL(__load_new_mm_context);
+
 /* 
  * SMP-specific symbols.
  */
--- 2.4.22-pre7aa1.clean/arch/i386/kernel/i386_ksyms.c	2003-07-25 23:18:39.000000000 -0500
+++ 2.4.22-pre7aa1/arch/i386/kernel/i386_ksyms.c	2003-07-25 23:25:55.000000000 -0500
@@ -151,6 +151,7 @@
 
 /* TLB flushing */
 EXPORT_SYMBOL(flush_tlb_page);
+EXPORT_SYMBOL(flush_tlb_mm);
 #endif
 
 #ifdef CONFIG_X86_IO_APIC
--- 2.4.22-pre7aa1.clean/include/linux/mm.h	2003-07-25 23:19:10.000000000 -0500
+++ 2.4.22-pre7aa1/include/linux/mm.h	2003-07-25 23:44:10.000000000 -0500
@@ -135,6 +135,8 @@
 	void (*open)(struct vm_area_struct * area);
 	void (*close)(struct vm_area_struct * area);
 	struct page * (*nopage)(struct vm_area_struct * area, unsigned long address, int unused);
+	int (*do_no_page)(struct mm_struct * mm, struct vm_area_struct * vma,
+		unsigned long address, int write_access, pte_t *page_table, pmd_t * pmd);
 #define HAVE_VMOP_MPROTECT
 	int (*mprotect)(struct vm_area_struct * area, unsigned int newflags);
 };
@@ -517,6 +519,9 @@
 extern void ptrace_disable(struct task_struct *);
 extern int ptrace_check_attach(struct task_struct *task, int kill);
 
+extern int do_no_page(struct mm_struct * mm, struct vm_area_struct * vma,
+		      unsigned long address, int write_access, pte_t *page_table, pmd_t * pmd);
+
 int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start,
 		int len, int write, int force, struct page **pages, struct vm_area_struct **vmas);
 
--- 2.4.22-pre7aa1.clean/kernel/ksyms.c	2003-07-25 23:19:15.000000000 -0500
+++ 2.4.22-pre7aa1/kernel/ksyms.c	2003-07-25 23:25:56.000000000 -0500
@@ -127,6 +127,7 @@
 EXPORT_SYMBOL(mem_map);
 #endif
 EXPORT_SYMBOL(remap_page_range);
+EXPORT_SYMBOL(zap_page_range);
 EXPORT_SYMBOL(max_mapnr);
 EXPORT_SYMBOL(high_memory);
 EXPORT_SYMBOL(vmtruncate);
@@ -141,6 +142,7 @@
 EXPORT_SYMBOL(kmap_prot);
 EXPORT_SYMBOL(kmap_pte);
 #endif
+EXPORT_SYMBOL(do_no_page);
 
 /* filesystem internal functions */
 EXPORT_SYMBOL(def_blk_fops);
--- 2.4.22-pre7aa1.clean/mm/memory.c	2003-07-25 23:19:15.000000000 -0500
+++ 2.4.22-pre7aa1/mm/memory.c	2003-07-25 23:42:28.000000000 -0500
@@ -1331,7 +1331,7 @@
  * This is called with the MM semaphore held and the page table
  * spinlock held. Exit with the spinlock released.
  */
-static int do_no_page(struct mm_struct * mm, struct vm_area_struct * vma,
+int do_no_page(struct mm_struct * mm, struct vm_area_struct * vma,
 	unsigned long address, int write_access, pte_t *page_table, pmd_t * pmd)
 {
 	struct page * new_page;
@@ -1460,7 +1460,12 @@
 		 * drop the lock.
 		 */
 		if (pte_none(entry))
+		{
+			if (unlikely(vma->vm_ops && vma->vm_ops->do_no_page))
+				return vma->vm_ops->do_no_page(mm, vma,
+					address, write_access, pte, pmd);
 			return do_no_page(mm, vma, address, write_access, pte, pmd);
+		}
 		return do_swap_page(mm, vma, address, pte, pmd, entry, write_access);
 	}