>> Feel free to further simplify the structures. We definitely don't
>> want to ever support bi-directional pipes. It's unncecessary
>> memory and CPU waste.
>...
>
>David Laight's concern about compatability with other very widely used
>systems that support bi-directional pipes is also quite valid.

what systems?  i tried, at one point, to find one, but failed.

>In fact one of the benefits I hoped we could reap from the FreeBSD pipe
>implementation was decent high-throughput bi-directional pipes, and in
>part my hope was driven by my desire for compatability with those other
>very widely used systems.

compatibility with something as uncommon as bi-directional pipes isn't
really compatibility at all.

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