ovl_start_creating_upper
upper = ovl_start_creating_upper(ofs, upperdir,
upper = ovl_start_creating_upper(ofs, c->destdir,
newdentry = ovl_start_creating_upper(ofs, upperdir,
work = ovl_start_creating_upper(ofs, ofs->workbasedir, &QSTR(name));
child = ovl_start_creating_upper(ofs, parent, &QSTR(name));