NFSv4: Don't check for OPEN feature support in v4.1

fattr4_open_arguments is a v4.2 recommended attribute, so we shouldn't
be sending it to v4.1 servers.

Fixes: cb78f9b ("nfs: fix the fetch of FATTR4_OPEN_ARGUMENTS")
Signed-off-by: Scott Mayhew <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Reviewed-by: Benjamin Coddington <[email protected]>
Cc: [email protected] # 6.11+
Signed-off-by: Anna Schumaker <[email protected]>

Author: scottmayhew

fs/nfs/nfs4proc.c

@@ -3976,8 +3976,9 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
 		     FATTR4_WORD0_CASE_INSENSITIVE |
 		     FATTR4_WORD0_CASE_PRESERVING;
 	if (minorversion)
-		bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT |
-			     FATTR4_WORD2_OPEN_ARGUMENTS;
+		bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT;
+	if (minorversion > 1)
+		bitmask[2] |= FATTR4_WORD2_OPEN_ARGUMENTS;
 
 	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 	if (status == 0) {