From 98b6624a2625dbc71fdc584ab27fafe5ff08a6c2 Mon Sep 17 00:00:00 2001
From: Alexandros Batsakis <batsakis@netapp.com>
Date: Mon, 14 Dec 2009 21:27:53 -0800
Subject: [PATCH] --- yaml --- r: 177232 b: refs/heads/master c:
 48f186124220794fce85ed1439fc32f16f69d3e2 h: refs/heads/master v: v3

---
 [refs]                             |  2 +-
 trunk/include/linux/sunrpc/sched.h |  1 +
 trunk/net/sunrpc/sched.c           | 14 ++++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 8fa30db82c04..dd9ff216027b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: afe6c27ccb8cc31ce8ed0bd3589ce549f523c8e7
+refs/heads/master: 48f186124220794fce85ed1439fc32f16f69d3e2
diff --git a/trunk/include/linux/sunrpc/sched.h b/trunk/include/linux/sunrpc/sched.h
index 1906782ec86b..9157405f9320 100644
--- a/trunk/include/linux/sunrpc/sched.h
+++ b/trunk/include/linux/sunrpc/sched.h
@@ -229,6 +229,7 @@ void		rpc_wake_up_queued_task(struct rpc_wait_queue *,
 void		rpc_wake_up(struct rpc_wait_queue *);
 struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
 void		rpc_wake_up_status(struct rpc_wait_queue *, int);
+int		rpc_queue_empty(struct rpc_wait_queue *);
 void		rpc_delay(struct rpc_task *, unsigned long);
 void *		rpc_malloc(struct rpc_task *, size_t);
 void		rpc_free(void *);
diff --git a/trunk/net/sunrpc/sched.c b/trunk/net/sunrpc/sched.c
index cef74ba0666c..89ea8e69ec78 100644
--- a/trunk/net/sunrpc/sched.c
+++ b/trunk/net/sunrpc/sched.c
@@ -384,6 +384,20 @@ static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct r
 		__rpc_do_wake_up_task(queue, task);
 }
 
+/*
+ * Tests whether rpc queue is empty
+ */
+int rpc_queue_empty(struct rpc_wait_queue *queue)
+{
+	int res;
+
+	spin_lock_bh(&queue->lock);
+	res = queue->qlen;
+	spin_unlock_bh(&queue->lock);
+	return (res == 0);
+}
+EXPORT_SYMBOL_GPL(rpc_queue_empty);
+
 /*
  * Wake up a task on a specific queue
  */