VI_FOPENING
while ((vp->v_iflag & VI_FOPENING) != 0)
if (vp->v_iflag & VI_FOPENING)
VI_OWEINACT | VI_DEFINACT | VI_FOPENING);
vp->v_iflag |= VI_FOPENING;
vp->v_iflag &= ~VI_FOPENING;