diff --git a/fs/splice.c b/fs/splice.c
index 2bd82e2..3931ee0 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1077,6 +1077,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
 
 	return splice_write(pipe, out, ppos, len, flags);
 }
+EXPORT_SYMBOL(do_splice_from);
 
 /*
  * Attempt to initiate a splice from a file to a pipe.
diff --git a/kernel/sched.c b/kernel/sched.c
index 8c9ab0a..aff95b6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -873,6 +873,26 @@ static inline int task_current(struct rq *rq, struct task_struct *p)
 	return rq->curr == p;
 }
 
+/*
+ * Look for any tasks *anywhere* that are running nice 0 or better. We do
+ * this lockless for overhead reasons since the occasional wrong result
+ * is harmless.
+ */
+int above_background_load(void)
+{
+        struct task_struct *cpu_curr;
+        unsigned long cpu;
+
+        for_each_online_cpu(cpu) {
+                cpu_curr = cpu_rq(cpu)->curr;
+                if (unlikely(!cpu_curr))
+                        continue;
+                if (PRIO_TO_NICE(cpu_curr->static_prio) < 1)
+                        return 1;
+        }
+        return 0;
+}
+
 #ifndef __ARCH_WANT_UNLOCKED_CTXSW
 static inline int task_running(struct rq *rq, struct task_struct *p)
 {
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 858289f..e7664ac 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1677,8 +1677,10 @@ static int effective_sc_prio(struct task_struct *p)
 	if (likely(p->mm)) {
 		if (rt_task(p))
 			return -20;
+#ifdef CONFIG_CPU_BFS
 		if (p->policy == SCHED_IDLEPRIO)
 			return 19;
+#endif
 		return task_nice(p);
 	}
 	return 0;