FLG_VER_CYCLIC
if ((v->vd_flags & FLG_VER_CYCLIC) == 0) {
v->vd_flags |= FLG_VER_CYCLIC;
if ((vp->vd_flags & FLG_VER_CYCLIC) == 0) {
vp->vd_flags |= FLG_VER_CYCLIC;