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

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Date:   Mon, 28 Nov 2016 21:59:39 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Christoph Lameter <cl@...ux.com>,
        Mel Gorman <mgorman@...hsingularity.net>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Linux-MM <linux-mm@...ck.org>,
        Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v3

On 11/28/2016 07:54 PM, Christoph Lameter wrote:
> On Mon, 28 Nov 2016, Mel Gorman wrote:
> 
>> 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.
> 
> I designed SLUB with defrag methods in mind. We could warm up some old
> patchsets that where never merged:
> 
> https://lkml.org/lkml/2010/1/29/332

Note that some other solutions to the dentry cache problem (perhaps of a
more low-hanging fruit kind) were also discussed at KS/LPC MM panel
session: https://lwn.net/Articles/705758/