NFSv4: SETCLIENTID_CONFIRM should handle NFS4ERR_DELAY/NFS4ERR_RESOURCE

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 62aed07..3100032 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2849,8 +2849,7 @@
 	return status;
 }
 
-int
-nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
+static int _nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
 {
 	struct nfs_fsinfo fsinfo;
 	struct rpc_message msg = {
@@ -2874,6 +2873,24 @@
 	return status;
 }
 
+int nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
+{
+	long timeout;
+	int err;
+	do {
+		err = _nfs4_proc_setclientid_confirm(clp, cred);
+		switch (err) {
+			case 0:
+				return err;
+			case -NFS4ERR_RESOURCE:
+				/* The IBM lawyers misread another document! */
+			case -NFS4ERR_DELAY:
+				err = nfs4_delay(clp->cl_rpcclient, &timeout);
+		}
+	} while (err == 0);
+	return err;
+}
+
 struct nfs4_delegreturndata {
 	struct nfs4_delegreturnargs args;
 	struct nfs4_delegreturnres res;