Index: linux-2.6.15-rc2/mm/rmap.c
===================================================================
--- linux-2.6.15-rc2.orig/mm/rmap.c	2005-11-20 03:25:03.000000000 +0000
+++ linux-2.6.15-rc2/mm/rmap.c	2005-11-22 21:51:31.000000000 +0000
@@ -460,6 +460,7 @@ void page_add_anon_rmap(struct page *pag
 		page->index = linear_page_index(vma, address);
 
 		inc_page_state(nr_mapped);
+		pagecache_acct(-1, page);
 	}
 	/* else checking page index and mapping is racy */
 }
@@ -475,8 +476,10 @@ void page_add_file_rmap(struct page *pag
 	BUG_ON(PageAnon(page));
 	BUG_ON(!pfn_valid(page_to_pfn(page)));
 
-	if (atomic_inc_and_test(&page->_mapcount))
+	if (atomic_inc_and_test(&page->_mapcount)) {
 		inc_page_state(nr_mapped);
+		pagecache_acct(-1, page);
+	}
 }
 
 /**
@@ -501,6 +504,7 @@ void page_remove_rmap(struct page *page)
 		if (page_test_and_clear_dirty(page))
 			set_page_dirty(page);
 		dec_page_state(nr_mapped);
+		pagecache_acct(1, page);
 	}
 }