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    SubjectRe: [PATCH for-3.3] mempool: clean up and document synchronization and memory barrier usage
    Ooh, missed something.

    On Wed, Dec 21, 2011 at 08:37:15AM -0800, Tejun Heo wrote:
    > Yes, that's another way to put it. It's much easier to understand if
    > you draw a graph with time on x axis and curr_nr on y and mark which
    > curr_nr values are guaranteed to be visible to whom. If at any point
    > of time, a freeing task sees curr_nr == min_nr, it's guaranteed that
    > either it's staying that way or, if not, someone else will see the
    > newly decremented value.

    And there will be enough "someone elses" to restore curr_nr == min_nr.

    Thanks.

    --
    tejun


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