--- 2.3.99-pre3aa1-alpha/mm/filemap.c.~1~	Thu Mar 30 18:24:29 2000
+++ 2.3.99-pre3aa1-alpha/mm/filemap.c	Thu Mar 30 23:50:26 2000
@@ -233,6 +233,16 @@
 		page = list_entry(page_lru, struct page, lru);
 		list_del(page_lru);
 
+		/*
+		 * HACK: don't clear the reference bit on mapped page cache
+		 * to give them longer life.
+		 */
+		if (page->mapping && page_count(page) > 1) {
+			dispose = &young;
+			count--;
+			goto dispose_continue;
+		}
+
 		dispose = &zone->lru_cache;
 		if (test_and_clear_bit(PG_referenced, &page->flags))
 			/* Roll the page at the top of the lru list,