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    SubjectRe: [PATCHSET] mempool, percpu, blkcg: fix percpu stat allocation and remove stats_lock
    On Thu, 23 Feb 2012 15:12:04 -0800
    Tejun Heo <> wrote:

    > On Thu, Feb 23, 2012 at 03:01:23PM -0800, Tejun Heo wrote:
    > > Hmmm... going through the thread again, ah, okay, I forgot about that
    > > completely. Yeah, that is an actual problem. Both __GFP_WAIT which
    > > isn't GFP_KERNEL and GFP_KERNEL are valid use cases. I guess we'll be
    > > building async percpu pool in blkcg then. Great. :(
    > Vivek, you win. :) Can you please refresh the async alloc patch on top
    > of blkcg-stacking branch? I'll rool that into this series and drop
    > the mempool stuff.

    I forget how those patches work, but they might be vulnerable to the
    same issue. If the block layer can handle the failed allocation
    attempt and retry at the next I/O event then I guess that would be
    acceptable; we'd lose a bit of statistical info occasionally, but who

    But ISTR that we can't handle allocation failures here?

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      Last update: 2012-02-24 00:25    [W:0.018 / U:5.352 seconds]
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