rpc: add rpc_queue_empty function
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index cef74ba..89ea8e6 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -385,6 +385,20 @@
}
/*
+ * 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
*/
void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task)