Re: [PATCH 0/5] make slab gfp fair

[Christoph Lameter]

On Thu, 17 May 2007, Peter Zijlstra wrote:

> > > 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.

And then again it may not because the allocation is contrained to a 
particular node,a NORMAL zone or a DMA zone. One zone way be below the 
watermark and another may not. Different allocations may be allowed to 
tap into various zones for various reasons.

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