--- linux-2.6.3-ck1pre/kernel/sched.c	2004-02-16 18:04:04.559290226 +1100
+++ linux-2.6.3-ck1/kernel/sched.c	2004-02-16 19:25:56.946625607 +1100
@@ -37,6 +37,7 @@
 #include <linux/rcupdate.h>
 #include <linux/cpu.h>
 #include <linux/percpu.h>
+#include <linux/fs.h>
 
 #ifdef CONFIG_NUMA
 #define cpu_to_node_mask(cpu) node_to_cpumask(cpu_to_node(cpu))
@@ -2155,6 +2156,26 @@ EXPORT_SYMBOL(sleep_on_timeout);
 
 void scheduling_functions_end_here(void) { }
 
+/*
+ * Sets the initial io priority according to the policy and nice level.
+ */
+void set_sched_ioprio(task_t *p, long nice)
+{
+	int io_prio = (20 - nice) / 2;
+	
+	if (io_prio <= IOPRIO_IDLE)
+		io_prio = IOPRIO_IDLE + 1;
+	if (batch_task(p))
+		io_prio = IOPRIO_IDLE;
+	if (iso_task(p))
+		io_prio *= 2;
+	if (io_prio >= IOPRIO_RT)
+		io_prio = IOPRIO_RT - 1;
+	if (rt_task(p))
+		io_prio = IOPRIO_RT;
+	p->ioprio = io_prio;
+}
+		
 void set_user_nice(task_t *p, long nice)
 {
 	unsigned long flags;
@@ -2175,6 +2196,9 @@ void set_user_nice(task_t *p, long nice)
 	 * it wont have any effect on scheduling until the task is
 	 * not SCHED_NORMAL:
 	 */
+	 
+	set_sched_ioprio(p, nice);
+	
 	if (rt_task(p)) {
 		p->static_prio = NICE_TO_PRIO(nice);
 		goto out_unlock;
@@ -2395,8 +2419,8 @@ static int setscheduler(pid_t pid, int p
 		p->sleep_avg = NS_MAX_SLEEP_AVG;
 		p->interactive_credit = CREDIT_LIMIT + 1;
 	}
-
 out_unlock:
+	set_sched_ioprio(p, TASK_NICE(p));
 	task_rq_unlock(rq, &flags);
 out_unlock_tasklist:
 	read_unlock_irq(&tasklist_lock);