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    SubjectRe: [patch] vmfixes-2.4.0-test9-B2

    On Mon, 25 Sep 2000, Andrea Arcangeli wrote:

    > driver (and I very much hope that with EXCLUSIVE gone away and the
    > wait_on_* fixed those hangs will go away because I don't see anything else
    > wrong at this moment).

    the EXCLUSIVE thing only optimizes the wakeup, it's not semantic! How
    better is it to let 100 processes race for one freed-up request slot?
    There is no guarantee at all that the reader will win. If reads and writes
    racing for request slots ever becomes a problem then we should introduce a
    separate read and write waitqueue.

    the EXCLUSIVE thing was noticed by Dimitris i think, and it makes tons of
    (performance) sense.


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