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    SubjectRe: 2.1.118 Tons of oopes
    Richard Gooch wrote:
    > Yes, I can see the benefit of avoiding the NULL check. It would be
    > nice to be able to do this. However, that would then require every
    > driver to be updated on every addition of a new VFS method.

    It's possible, in the NULL case, that the check is faster than the
    function call to the default function.

    > However, if there was some compiler trickery we could employ such that
    > a VFS change doesn't require source code to be touched, it would be a
    > good idea. Being able to strip those method existence tests would make
    > code a bit more readable and would also save a few cycles. But I don't
    > see how to do it without making drivers not distributed with the
    > kernel much harder to maintain.

    You're describing C++ virtual functions.

    -- Jamie

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