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    SubjectRe: [RFD w/info-PATCH] device arguments from lookup, partion code

    On Sun, 20 May 2001, Russell King wrote:
    >
    > On Sat, May 19, 2001 at 08:26:20PM -0700, Linus Torvalds wrote:
    > > You're missing the point.
    >
    > I don't think Richard is actually. I think Richard has hit a nail
    > dead on its head.
    >
    > > It's ok to do "read()/write()" on structures.
    >
    > Ok, we can read()/write() structures. So someone invents the following
    > structure:
    >
    > struct foo {
    > int cmd;
    > void *data;
    > } foo;
    >
    > Now they use write(fd, &foo, sizeof(foo)); Haven't they just swapped
    > the ioctl() interface for write() instead?

    Wrong.

    Nobody will expect the above to work, and everybody will agree that the
    above is a BUG if the read() call will actually follow the pointer.

    Read my email. And read the last line: "psychology is important".

    Step #1 in programming: understand people.

    Linus

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