diff -ru a/include/linux/sched.h linux-2.6.24.4/include/linux/sched.h
--- a/include/linux/sched.h	2008-03-24 14:49:18.000000000 -0400
+++ linux-2.6.24.4/include/linux/sched.h	2008-04-07 00:14:34.000000000 -0400
@@ -847,6 +847,10 @@
 	void (*set_curr_task) (struct rq *rq);
 	void (*task_tick) (struct rq *rq, struct task_struct *p);
 	void (*task_new) (struct rq *rq, struct task_struct *p);
+
+#ifdef CONFIG_FAIR_GROUP_SCHED
+	void (*moved_group) (struct task_struct *p);
+#endif
 };
 
 struct load_weight {
diff -ru a/kernel/sched.c linux-2.6.24.4/kernel/sched.c
--- a/kernel/sched.c	2008-03-24 14:49:18.000000000 -0400
+++ linux-2.6.24.4/kernel/sched.c	2008-04-07 00:13:11.000000000 -0400
@@ -7115,6 +7115,11 @@
 
 	set_task_cfs_rq(tsk, task_cpu(tsk));
 
+#ifdef CONFIG_FAIR_GROUP_SCHED
+	if (tsk->sched_class->moved_group)
+		tsk->sched_class->moved_group(tsk);
+#endif
+
 	if (unlikely(running))
 		tsk->sched_class->set_curr_task(rq);
 	if (on_rq)
diff -ru a/kernel/sched_fair.c linux-2.6.24.4/kernel/sched_fair.c
--- a/kernel/sched_fair.c	2008-03-24 14:49:18.000000000 -0400
+++ linux-2.6.24.4/kernel/sched_fair.c	2008-04-07 00:16:41.000000000 -0400
@@ -1104,6 +1104,16 @@
 		set_next_entity(cfs_rq_of(se), se);
 }
 
+#ifdef CONFIG_FAIR_GROUP_SCHED
+static void moved_group_fair(struct task_struct *p)
+{
+	struct cfs_rq *cfs_rq = task_cfs_rq(p);
+
+	update_curr(cfs_rq);
+	place_entity(cfs_rq, &p->se, 1);
+}
+#endif
+
 /*
  * All the scheduling class methods:
  */
@@ -1126,6 +1136,10 @@
 	.set_curr_task          = set_curr_task_fair,
 	.task_tick		= task_tick_fair,
 	.task_new		= task_new_fair,
+
+#ifdef CONFIG_FAIR_GROUP_SCHED
+	.moved_group		= moved_group_fair,
+#endif
 };
 
 #ifdef CONFIG_SCHED_DEBUG