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    SubjectRe: [PATCH] __free_pages_ok oops

    On Mon, 25 Feb 2002, Benjamin LaHaise wrote:
    >
    > I disagree: requiring aio to execute completion in user context means
    > that we can no longer have quick completion directly from an interrupt
    > handler to a busy server executing in userland.

    Note that teh IO _completion_ can happen in user land. That does not mean
    that the IO page tear-down can (or should) happen at the same time.

    There are two issues here:
    - the data structures supporting the IO, built up and torn down from
    process space.
    - the IO itself.

    One is synchronous, the other is not.

    Linus

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