Use page_cache_xxx in mm/migrate.c

Signed-off-by: Christoph Lameter <clameter@sgi.com>

---
 mm/migrate.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: vps/mm/migrate.c
===================================================================
--- vps.orig/mm/migrate.c	2007-06-11 15:56:37.000000000 -0700
+++ vps/mm/migrate.c	2007-06-11 22:05:16.000000000 -0700
@@ -196,7 +196,7 @@ static void remove_file_migration_ptes(s
 	struct vm_area_struct *vma;
 	struct address_space *mapping = page_mapping(new);
 	struct prio_tree_iter iter;
-	pgoff_t pgoff = new->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
+	pgoff_t pgoff = new->index << mapping_order(mapping);
 
 	if (!mapping)
 		return;