linux-kernel - Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v7

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Message-ID: <1481137869.4930.62.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Wed, 07 Dec 2016 11:11:09 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Mel Gorman <mgorman@...hsingularity.net>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Lameter <cl@...ux.com>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Johannes Weiner <hannes@...xchg.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        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 v7

On Wed, 2016-12-07 at 11:00 -0800, Eric Dumazet wrote:

>  
> So far, I believe net/unix/af_unix.c uses PAGE_ALLOC_COSTLY_ORDER as
> max_order, but UDP does not do that yet.

For af_unix, it happened in
https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=28d6427109d13b0f447cba5761f88d3548e83605

This came to fix a regression, since we had a gigantic slab allocation
in af_unix before 

https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=eb6a24816b247c0be6b2e97e68933072874bbe54