nfs41: allow LD to choose DS connection version/minor_version

flexfile layout may need to set such when making DS connections.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c
index 106ee08..ad211a4 100644
--- a/fs/nfs/pnfs_nfs.c
+++ b/fs/nfs/pnfs_nfs.c
@@ -554,6 +554,7 @@
 				 struct nfs4_pnfs_ds *ds,
 				 unsigned int timeo,
 				 unsigned int retrans,
+				 u32 minor_version,
 				 rpc_authflavor_t au_flavor)
 {
 	struct nfs_client *clp = ERR_PTR(-EIO);
@@ -570,7 +571,8 @@
 		clp = nfs4_set_ds_client(mds_srv->nfs_client,
 					(struct sockaddr *)&da->da_addr,
 					da->da_addrlen, IPPROTO_TCP,
-					timeo, retrans, au_flavor);
+					timeo, retrans, minor_version,
+					au_flavor);
 		if (!IS_ERR(clp))
 			break;
 	}
@@ -601,13 +603,14 @@
  */
 void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
 			  struct nfs4_deviceid_node *devid, unsigned int timeo,
-			  unsigned int retrans, rpc_authflavor_t au_flavor)
+			  unsigned int retrans, u32 version,
+			  u32 minor_version, rpc_authflavor_t au_flavor)
 {
 	if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) {
 		int err = 0;
 
-		err = _nfs4_pnfs_ds_connect(mds_srv, ds, timeo,
-					    retrans, au_flavor);
+		err = _nfs4_pnfs_ds_connect(mds_srv, ds, timeo, retrans,
+					    minor_version, au_flavor);
 		if (err)
 			nfs4_mark_deviceid_unavailable(devid);
 		nfs4_clear_ds_conn_bit(ds);