BW_UPCALL_LEQ
if (req->bu_flags & BW_UPCALL_LEQ)
if (!(req->bu_flags & (BW_UPCALL_GEQ | BW_UPCALL_LEQ)))
if ((req->bu_flags & (BW_UPCALL_GEQ | BW_UPCALL_LEQ))
== (BW_UPCALL_GEQ | BW_UPCALL_LEQ))
u->bu_flags |= BW_UPCALL_LEQ;