VHOLD_ALL_FLAGS
VNASSERT(old >= 0 && (old & VHOLD_ALL_FLAGS) == 0, vp,
VNASSERT(old > 0 && (old & VHOLD_ALL_FLAGS) == 0, vp,
_Static_assert((VHOLD_ALL_FLAGS & ~VHOLD_NO_SMR) == 0,
vp->v_usecount, vp->v_writecount, holdcnt & ~VHOLD_ALL_FLAGS,