linux-kernel - Re: [PATCH v1 0/6] mm / virtio: Provide support for paravirtual waste page treatment

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Message-ID: <bc4bb663-585b-bee0-1310-b149382047d0@intel.com>
Date:   Tue, 25 Jun 2019 11:22:58 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Nitesh Narayan Lal <nitesh@...hat.com>,
        kvm list <kvm@...r.kernel.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Yang Zhang <yang.zhang.wz@...il.com>, pagupta@...hat.com,
        Rik van Riel <riel@...riel.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        lcapitulino@...hat.com, wei.w.wang@...el.com,
        Andrea Arcangeli <aarcange@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>, dan.j.williams@...el.com,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>
Subject: Re: [PATCH v1 0/6] mm / virtio: Provide support for paravirtual waste
 page treatment

On 6/25/19 10:00 AM, Alexander Duyck wrote:
> Basically what we are doing is inflating the memory size we can report
> by inserting voids into the free memory areas. In my mind that matches
> up very well with what "aeration" is. It is similar to balloon in
> functionality, however instead of inflating the balloon we are
> inflating the free_list for higher order free areas by creating voids
> where the madvised pages were.

OK, then call it "free page auto ballooning" or "auto ballooning" or
"allocator ballooning".  s390 calls them "unused pages".

Any of those things are clearer and more meaningful than "page aeration"
to me.