Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v3

[Mel Gorman]

On Mon, Nov 28, 2016 at 10:38:58AM -0600, Christoph Lameter wrote:
> > > that only insiders know how to tune and an overall fragile solution.
> > While I agree with all of this, it's also a problem independent of this
> > patch.
> 
> It is related. The fundamental issue with fragmentation remain and IMHO we
> really need to tackle this.
> 

Fragmentation is one issue. Allocation scalability is a separate issue.
This patch is about scaling parallel allocations of small contiguous
ranges. Even if there were fragmentation-related patches up for discussion,
they would not be directly affected by this patch.

If you have a series aimed at parts of the fragmentation problem or how
subsystems can avoid tracking 4K pages in some important cases then by
all means post them.

-- 
Mel Gorman
SUSE Labs