VXWANT
vp->v_lflag |= VXWANT;
if (vp->v_lflag & VXWANT) {
vp->v_lflag &= ~VXWANT;
vp->v_lflag |= VXWANT;
if (vp->v_lflag & VXWANT)
vp->v_lflag |= VXWANT;
vp->v_lflag |= VXWANT;
vp->v_lflag |= VXWANT;
if (flag & VXWANT)