net/clnt: remove sleep_on*() usage

@@ -28,6 +28,7 @@
 #include <linux/slab.h>
 #include <linux/in.h>
 #include <linux/utsname.h>
+#include <linux/wait.h>
 
 #include <linux/sunrpc/clnt.h>
 #include <linux/workqueue.h>

@@ -222,6 +223,7 @@ out_no_clnt:
 int
 rpc_shutdown_client(struct rpc_clnt *clnt)
 {
+	DEFINE_WAIT(wait);
 	dprintk("RPC: shutting down %s client for %s, tasks=%d\n",
 			clnt->cl_protname, clnt->cl_server,
 			atomic_read(&clnt->cl_users));

@@ -231,7 +233,9 @@ rpc_shutdown_client(struct rpc_clnt *cln
 		clnt->cl_oneshot = 0;
 		clnt->cl_dead = 0;
 		rpc_killall_tasks(clnt);
-		sleep_on_timeout(&destroy_wait, 1*HZ);
+		prepare_to_wait(&destroy_wait, &wait, TASK_UNINTERRUPTIBLE);
+		schedule_timeout(HZ);
+		finish_wait(&destroy_wait, &wait);
 	}
 
 	if (atomic_read(&clnt->cl_users) < 0) {