do_renameat2     4657 fs/namei.c     	return do_renameat2(olddfd, oldname, newdfd, newname, flags);
do_renameat2     4663 fs/namei.c     	return do_renameat2(olddfd, oldname, newdfd, newname, 0);
do_renameat2     4668 fs/namei.c     	return do_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0);