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    SubjectRe: silent semantic changes with reiser4
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    On Fri, 2004-08-27 at 10:49 +0200, Christoph Hellwig wrote:

    > On Fri, Aug 27, 2004 at 09:41:07AM +0200, Bernd Petrovitsch wrote:
    > > > > UNIX doesn't have a copy systemcall, applications copy the data
    > > > > manually.
    > > >
    > > > Oh, this is very unfortunate and should be a bigger issue to fix.
    > >
    > > Then you have to rewrite POSIX und SuSv3.
    >
    > They don't say 'you must now have a copy syscall'. Having one that's
    > actually used by system tools would be a great optimization for many
    > network or distributed filesystems.

    ACK. But actually spam apparently assumes that the kernel - userspace
    interface is at the wrong abstraction level. And this is conceptually
    bound IMHO to POSIX.
    And it does not solve the problem, that the read() and write() sys-calls
    will not vanish. Even if a copy() sys-call exists.

    Bernd
    --
    Firmix Software GmbH http://www.firmix.at/
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