--- zzzz-none-000/linux-2.6.13.1/include/linux/fs.h	2005-09-10 02:42:58.000000000 +0000
+++ ohio-7170-487/linux-2.6.13.1/include/linux/fs.h	2006-06-09 13:32:28.000000000 +0000
@@ -601,6 +601,9 @@
 	/* needed for tty driver, and maybe others */
 	void			*private_data;
 
+	/* Estimated number of dirty pages (20060602 =OS=) */
+	unsigned		f_dirt;
+	
 #ifdef CONFIG_EPOLL
 	/* Used by fs/eventpoll.c to link all the hooks to this file */
 	struct list_head	f_ep_links;