On Mon, Nov 28, 2016 at 10:38:58AM -0600, Christoph Lameter wrote:

quoted

quoted

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

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