On Thu, 2007-05-17 at 10:30 -0700, Christoph Lameter wrote:
> On Thu, 17 May 2007, Peter Zijlstra wrote:
>
> > > 2. It seems to be based on global ordering of allocations which is
> > > not possible given large systems and the relativistic constraints
> > > of physics. Ordering of events get more expensive the bigger the
> > > system is.
> > >
> > > How does this system work if you can just order events within
> > > a processor? Or within a node? Within a zone?
> >
> > /me fails again..
> >
> > Its about ensuring ALLOC_NO_WATERMARKS memory only reaches PF_MEMALLOC
> > processes, not joe random's pi calculator.
>
> Watermarks are per zone?
Yes, but the page allocator might address multiple zones in order to
obtain a page.
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