use the following, much more intuitive interface names:

- pte_offset_map2 => pte_offset_map_nested
- pte_unmap2 => pte_unmap_nested

include/asm-i386/pgtable.h

@@ -342,10 +342,10 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 	((pte_t *) pmd_page_kernel(*(dir)) +  __pte_offset(address))
 #define pte_offset_map(dir, address) \
 	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + __pte_offset(address))
-#define pte_offset_map2(dir, address) \
+#define pte_offset_map_nested(dir, address) \
 	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + __pte_offset(address))
 #define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
-#define pte_unmap2(pte) kunmap_atomic(pte, KM_PTE1)
+#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
 
 /*
  * The i386 doesn't have any external MMU info: the kernel page

mm/memory.c

@@ -261,7 +261,7 @@ skip_copy_pte_range:		address = (address + PMD_SIZE) & PMD_MASK;
 			if (!dst_pte)
 				goto nomem;
 			spin_lock(&src->page_table_lock);			
-			src_pte = pte_offset_map2(src_pmd, address);
+			src_pte = pte_offset_map_nested(src_pmd, address);
 			do {
 				pte_t pte = *src_pte;
 				struct page *ptepage;
@@ -295,14 +295,14 @@ skip_copy_pte_range:		address = (address + PMD_SIZE) & PMD_MASK;
 cont_copy_pte_range:		set_pte(dst_pte, pte);
 cont_copy_pte_range_noset:	address += PAGE_SIZE;
 				if (address >= end) {
-					pte_unmap2(src_pte);
+					pte_unmap_nested(src_pte);
 					pte_unmap(dst_pte);
 					goto out_unlock;
 				}
 				src_pte++;
 				dst_pte++;
 			} while ((unsigned long)src_pte & PTE_TABLE_MASK);
-			pte_unmap2(src_pte-1);
+			pte_unmap_nested(src_pte-1);
 			pte_unmap(dst_pte-1);
 			spin_unlock(&src->page_table_lock);
 		

mm/mremap.c

@@ -17,7 +17,7 @@
 
 extern int vm_enough_memory(long pages);
 
-static inline pte_t *get_one_pte_map2(struct mm_struct *mm, unsigned long addr)
+static inline pte_t *get_one_pte_map_nested(struct mm_struct *mm, unsigned long addr)
 {
 	pgd_t * pgd;
 	pmd_t * pmd;
@@ -41,9 +41,9 @@ static inline pte_t *get_one_pte_map2(struct mm_struct *mm, unsigned long addr)
 		goto end;
 	}
 
-	pte = pte_offset_map2(pmd, addr);
+	pte = pte_offset_map_nested(pmd, addr);
 	if (pte_none(*pte)) {
-		pte_unmap2(pte);
+		pte_unmap_nested(pte);
 		pte = NULL;
 	}
 end:
@@ -84,11 +84,11 @@ static int move_one_page(struct mm_struct *mm, unsigned long old_addr, unsigned
 	pte_t *src, *dst;
 
 	spin_lock(&mm->page_table_lock);
-	src = get_one_pte_map2(mm, old_addr);
+	src = get_one_pte_map_nested(mm, old_addr);
 	if (src) {
 		dst = alloc_one_pte_map(mm, new_addr);
 		error = copy_one_pte(mm, src, dst);
-		pte_unmap2(src);
+		pte_unmap_nested(src);
 		pte_unmap(dst);
 	}
 	spin_unlock(&mm->page_table_lock);