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    SubjectRe: [PATCH block/for-linus 1/3] block: replace icq->changed with icq->flags
    2012/2/15 Tejun Heo <>:
    > icq->changed was used for ICQ_*_CHANGED bits.  Rename it to flags and
    > access it under ioc->lock instead of using atomic bitops.
    > ioc_get_changed() is added so that the changed part can be fetched and
    > cleared as before.
    > icq->flags will be used to carry other flags.
    > Signed-off-by: Tejun Heo <>
    > ---
    > Jens, these three patches are to fix the swap heavy workload
    > regression reported by Shaohua.
    > Shaohua, I ended up changing the second patch, which shouldn't change
    > anything but it would be great if you can verify this series once
    > more.
    yes, confirmed the patches fix the regression. Thanks for fixing it.
    Tested-by: Shaohua Li <>
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      Last update: 2012-02-15 02:11    [W:0.021 / U:0.228 seconds]
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