NFSv4: Fix a nograce recovery hang

Since commit 5cae02f42793130e1387f4ec09c4d07056ce9fa5 an OPEN_CONFIRM should
have a privileged sequence in the recovery case to allow nograce recovery to
proceed for NFSv4.0.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 12e9808..83d5770 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1869,6 +1869,8 @@
 	data->rpc_done = 0;
 	data->rpc_status = 0;
 	data->timestamp = jiffies;
+	if (data->is_recover)
+		nfs4_set_sequence_privileged(&data->c_arg.seq_args);
 	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);