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    SubjectRe: [PATCH] Fix dirty page accounting in redirty_page_for_writepage()
    On Thu, 30 Apr 2009, Ingo Molnar wrote:

    > So we introduced preemption-safety in the v2 version of that commit.
    >
    > This non-atomicity will 1) either not matter 2) will be irq-atomic
    > by virtue of being within a critical section 3) can be made atomic
    > in the few remaining cases.
    >
    > And maybe, at most, introduce an opt-in API: percpu_add_irqsafe().

    Plus percpu_add_preemptsafe().




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