linux-kernel - Re: [PATCH v5 3/6] mm: Use zone and order instead of free area in free

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Date:   Mon, 12 Aug 2019 15:39:11 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     nitesh@...hat.com, KVM list <kvm@...r.kernel.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        David Hildenbrand <david@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        Linux MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        virtio-dev@...ts.oasis-open.org,
        Oscar Salvador <osalvador@...e.de>, yang.zhang.wz@...il.com,
        Pankaj Gupta <pagupta@...hat.com>,
        Rik van Riel <riel@...riel.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        lcapitulino@...hat.com, "Wang, Wei W" <wei.w.wang@...el.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>
Subject: Re: [PATCH v5 3/6] mm: Use zone and order instead of free area in
 free_list manipulators

On Mon, Aug 12, 2019 at 2:33 PM Alexander Duyck
<alexander.duyck@...il.com> wrote:
>
> From: Alexander Duyck <alexander.h.duyck@...ux.intel.com>
>
> In order to enable the use of the zone from the list manipulator functions
> I will need access to the zone pointer. As it turns out most of the
> accessors were always just being directly passed &zone->free_area[order]
> anyway so it would make sense to just fold that into the function itself
> and pass the zone and order as arguments instead of the free area.
>
> In order to be able to reference the zone we need to move the declaration
> of the functions down so that we have the zone defined before we define the
> list manipulation functions.

Independent of the code movement for the zone declaration this looks
like a nice cleanup of the calling convention.

Reviewed-by: Dan Williams <dan.j.williams@...el.com>