linux-kernel - Re: [PATCH v1 1/6] mm: Adjust shuffle code to allow for future coalescing

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Message-ID: <d8287bfe-8b34-895c-eff2-c88d0a3f76ae@intel.com>
Date:   Tue, 25 Jun 2019 11:26:46 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Alexander Duyck <alexander.duyck@...il.com>, nitesh@...hat.com,
        kvm@...r.kernel.org, david@...hat.com, mst@...hat.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org
Cc:     yang.zhang.wz@...il.com, pagupta@...hat.com, riel@...riel.com,
        konrad.wilk@...cle.com, lcapitulino@...hat.com,
        wei.w.wang@...el.com, aarcange@...hat.com, pbonzini@...hat.com,
        dan.j.williams@...el.com, alexander.h.duyck@...ux.intel.com
Subject: Re: [PATCH v1 1/6] mm: Adjust shuffle code to allow for future
 coalescing

On 6/19/19 3:33 PM, Alexander Duyck wrote:
> This patch is meant to move the head/tail adding logic out of the shuffle
> code and into the __free_one_page function since ultimately that is where
> it is really needed anyway. By doing this we should be able to reduce the
> overhead and can consolidate all of the list addition bits in one spot.

This looks like a sane cleanup that can stand on its own.  It gives nice
names (buddy_merge_likely()) to things that were just code blobs before.

Reviewed-by: Dave Hansen <dave.hansen@...el.com>