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    SubjectRe: [BUG] get_unmapped_area() change -> non booting machine


    On Thu, 12 Feb 2004, Dave McCracken wrote:
    >
    > Hmm... would it work to just do something like 'if the previous vma is
    > grow-up then allocate from the top of the hole'? It'd eliminate the need
    > for a hard limit and should pretty much stay out of the way of BSS.

    Well, the _common_ case at least for the loader is that the "top of the
    hole" is actually the stack. So the above would _really_ suck, and crash
    pretty much immediately ;)

    It would also cause the strange behaviour that we'd start allocating the
    virtual memory areas in "reverse order", ie we'd start at the top and grow
    down.

    So I don't think that's a very good approach.

    This is why special cases get complex: they end up feeding yet more
    special cases.

    Linus
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