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    SubjectRe: More on bigger kdev_t
    From
    Date
    alan@lxorguk.ukuu.org.uk (Alan Cox) writes:

    > > If kdev_t is a 4 byte long structure, (i.e., using a 16/16 major/minor
    > > split), the compiler should be able to do a relatively good job of
    > > optimizing accesses to it. If not, that's a compiler bug that we should
    > > report, and ask the gcc/egcs folks to fix.
    >
    > On many platforms
    >
    > struct
    > {
    > u16 a;
    > u16 b;
    > };
    >
    > is an 8 byte object.

    But

    struct bla {
    unsigned a : 16;
    unsigned b : 16;
    };

    isn't (and has the same type checking benefits)


    -Andi

    --
    This is like TV. I don't like TV.

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