IN_LOADED
if((ip->i_flag & IN_LOADED) == 0) {
KASSERT((ip->i_flag & IN_LOADED) == 0);
KASSERT((oip->i_flag & IN_LOADED));
oip->i_flag &= ~IN_LOADED;
ip->i_flag |= IN_LOADED;
if (ip->i_flag & IN_LOADED) {
if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {