--- linux/drivers/block/ide-geometry.c.old    Thu Jan  4 12:51:29 2001
+++ linux/drivers/block/ide-geometry.c        Thu Jan  4 13:18:02 2001  
@@ -2,6 +2,7 @@
  * linux/drivers/ide/ide-geometry.c
  */
 #include <linux/config.h>
+#include <linux/mm.h>
 #include <linux/mc146818rtc.h>
 #include <linux/ide.h>
 #include <asm/io.h>