FLG_IS_INSTRMRG
isp->is_flags |= FLG_IS_INSTRMRG;
(FLG_IS_DISCARD | FLG_IS_INSTRMRG)) != FLG_IS_INSTRMRG))
if ((sdp->sd_isc->is_flags & FLG_IS_INSTRMRG) == 0)
if ((isp->is_flags & FLG_IS_INSTRMRG) &&