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SubjectRe: [PATCH] Fix dirty page accounting in redirty_page_for_writepage()
* Ingo Molnar (mingo@elte.hu) wrote:
>
> * Christoph Lameter <cl@linux.com> wrote:
>
> > On Wed, 29 Apr 2009, Mathieu Desnoyers wrote:
> >
> > > to have a good look at the memory accounting code. We could
> > > probably benefit of Christoph Lameter's cpu ops (using segment
> > > registers to address per-cpu variables with atomic inc/dec) in
> > > there. Or at least removing interrupt disabling by using preempt
> > > disable and local_t variables for the per-cpu counters could
> > > bring some benefit.
> >
> > Guess we are ready for atomic per cpu ops now that the new per cpu
> > allocator is in? Segment register issues with the PDA are also
> > solved right?
>
> it's all done, implemented and upstream already. You are a bit late
> to the party ;-)
>
> Ingo

Or way too early, depending on the point of view. :-)

e.g.
http://lkml.org/lkml/2008/5/30/3

I think Christoph deserves credits for pioneering this area with fresh
ideas.

Mathieu

--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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