RACK_STRADDLE
((rsm->r_flags & RACK_STRADDLE) == 0) &&
((next->r_flags & RACK_STRADDLE) == 0) &&
((rsm->r_flags & RACK_STRADDLE) == 0) &&
((prev->r_flags & RACK_STRADDLE) == 0) &&
if (rsm->r_flags & RACK_STRADDLE)
if (next->r_flags & RACK_STRADDLE)
if (rsm->r_flags & RACK_STRADDLE)
if (prev->r_flags & RACK_STRADDLE)
rsm->r_flags |= RACK_STRADDLE;
rsm->r_flags &= ~RACK_STRADDLE;