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    SubjectRe: [PATCH 1.5/2] generic-smp: fix initial quiesent count.
    On Sat, 2009-02-14 at 15:46 +0100, Peter Zijlstra wrote:
    > first compile, then send out...
    > ---
    > Subject: generic-smp: fix initial quiesent count.
    > From: Peter Zijlstra <>
    > Date: Sat Feb 14 15:36:07 CET 2009
    > If we start with a quiesent sequence count of 0, we'll match the initial stamp
    > values of the cfd_data, and never make any progress.
    > To avoid getting stuck in this situation, start out with an increased quiesent
    > sequence count.

    OK, so this is not going to fix the problem in generic. Its still
    possible to end up with the original issue.

    We'd need a callback list to free used entries, much like regular RCU,
    this quiesent sequence count's wrapping just seems too brittle.

     \ /
      Last update: 2009-02-14 22:19    [W:0.021 / U:16.148 seconds]
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