diff -NurpP linux-2.6.16-vs2.1.1-rc15.3/include/linux/vserver/sched_cmd.h linux-2.6.16-vs2.1.1-rc15.5/include/linux/vserver/sched_cmd.h
--- linux-2.6.16-vs2.1.1-rc15.3/include/linux/vserver/sched_cmd.h	2006-03-20 18:09:05 +0100
+++ linux-2.6.16-vs2.1.1-rc15.5/include/linux/vserver/sched_cmd.h	2006-04-12 01:54:42 +0200
@@ -51,6 +51,7 @@ struct	vcmd_set_sched_v4 {
 #define VXSM_IDLE_TIME		0x0200
 
 #define	VXSM_V3_MASK		0x0173
+#define	VXSM_SET_MASK		0x01FF
 
 #define VXSM_CPU_ID		0x1000
 #define VXSM_BUCKET_ID		0x2000
diff -NurpP linux-2.6.16-vs2.1.1-rc15.3/kernel/vserver/sched.c linux-2.6.16-vs2.1.1-rc15.5/kernel/vserver/sched.c
--- linux-2.6.16-vs2.1.1-rc15.3/kernel/vserver/sched.c	2006-04-12 01:05:08 +0200
+++ linux-2.6.16-vs2.1.1-rc15.5/kernel/vserver/sched.c	2006-04-12 01:54:01 +0200
@@ -187,6 +187,7 @@ on_hold:
 int do_set_sched(struct vx_info *vxi, struct vcmd_set_sched_v4 *data)
 {
 	unsigned int set_mask = data->set_mask;
+	unsigned int update_mask;
 
 	/* Sanity check data values */
 	if (data->fill_rate < 0)
@@ -224,7 +225,9 @@ int do_set_sched(struct vx_info *vxi, st
 	if (set_mask & VXSM_PRIO_BIAS)
 		vxi->sched.prio_bias = data->prio_bias;
 
-	vxi->sched.update_mask |= set_mask;
+	update_mask = vxi->sched.update_mask & VXSM_SET_MASK;
+	update_mask |= (set_mask & (VXSM_SET_MASK|VXSM_IDLE_TIME));
+	vxi->sched.update_mask = update_mask;
 #ifdef	CONFIG_SMP
 	rmb();
 	if (set_mask & VXSM_CPU_ID)