FLG_VER_AVAIL
if (!(vip->vi_flags & FLG_VER_AVAIL))
if (!(vip->vi_flags & FLG_VER_AVAIL)) {
if (vip->vi_flags & FLG_VER_AVAIL) {
if (!(vip->vi_flags & FLG_VER_AVAIL)) {
if (!(vip->vi_flags & FLG_VER_AVAIL)) {
vip->vi_flags |= FLG_VER_AVAIL;
vip[ndx].vi_flags |= FLG_VER_AVAIL;
vip->vi_flags |= FLG_VER_AVAIL;
vdp->vd_flags &= ~FLG_VER_AVAIL;
vdp->vd_flags = vdf->vd_flags | FLG_VER_AVAIL;
bvdp->vd_flags &= ~FLG_VER_AVAIL;
!(vdp->vd_flags & FLG_VER_AVAIL))