--- linux-2.6.20-030test004/mm/page-writeback.c.orig	2007-04-04 19:22:22.000000000 +0400
+++ linux-2.6.20-030test004/mm/page-writeback.c	2007-04-04 19:31:23.000000000 +0400
@@ -35,6 +35,7 @@
 #include <linux/pagevec.h>
 
 #include <bc/io_acct.h>
+#include <bc/io_prio.h>
 
 /*
  * The maximum number of pages to writeout in a single bdflush/kupdate
--- linux-2.6.20-030test004/include/bc/io_prio.h.orig	2007-04-04 19:22:22.000000000 +0400
+++ linux-2.6.20-030test004/include/bc/io_prio.h	2007-04-04 19:28:24.000000000 +0400
@@ -15,6 +15,7 @@
 
 #include <linux/list.h>
 #include <linux/spinlock.h>
+#include <linux/cfq-iosched.h>
 
 #define UB_IOPRIO_MIN 0
 #define UB_IOPRIO_MAX IOPRIO_BE_NR
--- linux-2.6.20-030test004/block/cfq-iosched.c.orig	2007-04-04 19:22:21.000000000 +0400
+++ linux-2.6.20-030test004/block/cfq-iosched.c	2007-04-04 19:42:42.000000000 +0400
@@ -143,7 +143,7 @@
 	rcu_read_unlock();
 }
 #else
-static inline struct ub_iopriv *cfqq_ub_iopriv(struct cfq_data *cfqd)
+static inline struct ub_iopriv *cfqq_ub_iopriv(struct cfq_data *cfqd, pid_t key)
 {
 	return  NULL;
 }