Re: [PATCH] Fix dirty page accounting in redirty_page_for_writepage()

Christoph Lameter
2009-04-30T18:17:22Z

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().