linux-kernel - Re: [PATCH v13 3/6] mm: Introduce Reported pages

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Message-ID: <CAKgT0UeAPve6bWG_orQ=D5TOhagZ9FSrgNZRahj1ZsuQMD38LA@mail.gmail.com>
Date:   Wed, 6 Nov 2019 08:08:56 -0800
From:   Alexander Duyck <alexander.duyck@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     kvm list <kvm@...r.kernel.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        linux-mm <linux-mm@...ck.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Vlastimil Babka <vbabka@...e.cz>,
        Yang Zhang <yang.zhang.wz@...il.com>,
        Nitesh Narayan Lal <nitesh@...hat.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        David Hildenbrand <david@...hat.com>,
        Pankaj Gupta <pagupta@...hat.com>,
        Rik van Riel <riel@...riel.com>, lcapitulino@...hat.com,
        Dave Hansen <dave.hansen@...el.com>,
        "Wang, Wei W" <wei.w.wang@...el.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v13 3/6] mm: Introduce Reported pages

On Tue, Nov 5, 2019 at 8:00 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Tue, 05 Nov 2019 14:02:19 -0800 Alexander Duyck <alexander.duyck@...il.com> wrote:
>
> > In order to pave the way for free page reporting in virtualized
> > environments we will need a way to get pages out of the free lists and
> > identify those pages after they have been returned. To accomplish this,
> > this patch adds the concept of a Reported Buddy, which is essentially
> > meant to just be the Uptodate flag used in conjunction with the Buddy
> > page type.
>
> build fix
>
> --- a/mm/page_reporting.h~mm-introduce-reported-pages-fix
> +++ a/mm/page_reporting.h
> @@ -158,7 +158,7 @@ free_area_reporting(struct zone *zone, u
>         return false;
>  }
>  static inline struct list_head *
> -get_unreported_tail(struct zone *zone, unsigned int order, int migratetype)
> +get_unreported_tail(unsigned int order, int migratetype)
>  {
>         return NULL;
>  }
>

Sorry about that. I will make sure to include the fix in v14.

Thanks.

- Alex