--- 2.5.44-mm3/mm/memory.c	2002-10-23 10:20:08.000000000 -0500
+++ 2.5.44-mm3-shsent/mm/memory.c	2002-10-23 10:42:56.000000000 -0500
@@ -1823,6 +1823,7 @@
 static int do_file_page(struct mm_struct * mm, struct vm_area_struct * vma,
 	unsigned long address, int write_access, pte_t *pte, pmd_t *pmd)
 {
+	struct page *ptepage = pmd_page(*pmd);
 	unsigned long pgoff;
 	int err;
 
@@ -1840,7 +1841,7 @@
 	pgoff = pte_to_pgoff(*pte);
 
 	pte_unmap(pte);
-	spin_unlock(&mm->page_table_lock);
+	pte_page_unlock(ptepage);
 
 	err = vma->vm_ops->populate(vma, address & PAGE_MASK, PAGE_SIZE, vma->vm_page_prot, pgoff, 0);
 	if (err == -ENOMEM)