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    SubjectRe: [PATCH 2.5.5] do export vmalloc_to_page to modules...
    On Wed, 3 Apr 2002, Alan Cox wrote:
    > Taking code I am one of the authors of and making it convenient for
    > people like veritas to use in non GPL code is quite different. Its
    > theft plain and simple.

    Alan,

    I don't want to try your patience but I have to emphasize that:

    yes, it should be authors decision (completely agree with you there!)
    whether a symbol is exported or not and whether it should be exported to
    all modules or only to some "internal/kernel" modules. But this is a
    technical issue, nothing to do with legalities/licenses or author's likes
    or dislikes of binary modules.

    But if the author's decision is based on a statement similar to "I spent N
    hours writing this function, it's okay to let GPL modules use it but no
    way I'll let the nasty veritas-like people use it", then I feel something
    is wrong somewhere. Then perhaps we could even refine the API to have

    EXPORT_SYMBOL_FRIENDS(sym,list_of_friends)

    where only "friends" can use the symbol and even then only if they first
    call (an exported function):

    register_export_payment(sym, sum);

    where 'sum' depends on the number of hours spent on writing sym().

    I feared that perhaps I misunderstood the meaning of EXPORT_SYMBOL_GPL but
    in the other "instance" of this thread Linus did confirm that it was
    correct.

    Regards,
    Tigran


    PS. unimportant detail for curious listeners on linux-kernel -- Veritas
    doesn't actually need vmalloc_to_page exported in any manner or form.

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