GFS2_DIF_APPENDONLY
{FS_APPEND_FL, GFS2_DIF_APPENDONLY},
if (ip->i_diskflags & GFS2_DIF_APPENDONLY)
GFS2_DIF_APPENDONLY| \
if (gfsflags & GFS2_DIF_APPENDONLY)
if (ip->i_diskflags & GFS2_DIF_APPENDONLY) {