Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains

From: Rik van Riel (
Date: Thu Feb 01 2001 - 13:39:32 EST

On Thu, 1 Feb 2001, Alan Cox wrote:

> > Now one could say: just let the networkers use their own kind of buffers
> > (and that's exactly what is done in the zerocopy patches), but that again leds
> > to inefficient buffer passing and ungeneric IO handling.

> It is quite possible that the right thing to do is to do
> conversions in the cases it happens.

OTOH, somehow a zero-copy system which converts the zero-copy
metadata every time the buffer is handed to another subsystem
just doesn't sound right ...

(well, maybe it _is_, but it looks quite inefficient at first



Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

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