[ltt-dev] [PATCH] Fix dirty page accounting in redirty_page_for_writepage()

[mathieu.desnoyers@polymtl.ca (Mathieu Desnoyers)]

* Ingo Molnar (mingo at elte.hu) wrote:
> 
> * Christoph Lameter <cl at 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
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