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    SubjectRe: [patch] convert aio event reap to use atomic-op instead of spin_lock
    On Thu, Apr 12, 2007 at 12:50:39AM -0700, Ken Chen wrote:
    > I ran through the autotest (with bug fix in the test code). It passes
    > the regression tests. I made the following change since last rev:

    By removing the spinlock around ring insertion, you've made it possible
    for two events being inserted on different CPUs to end up creating
    inconsistent state, as there is nothing which guarantees that resulting
    event in the ring will be wholely one event or another.

    Also, I don't like rounding up of the number of events to the nearest power
    of two, as it can round things up significantly more than just going to the
    end of the last actual page of memory allocated.



    PS base64 encoded patches are incredibly difficult to quote.
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