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

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Message-Id: <20191105200022.ed3b5f803bef55377bcc5d30@linux-foundation.org>
Date:   Tue, 5 Nov 2019 20:00:22 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     kvm@...r.kernel.org, mst@...hat.com, linux-kernel@...r.kernel.org,
        willy@...radead.org, mhocko@...nel.org, linux-mm@...ck.org,
        mgorman@...hsingularity.net, vbabka@...e.cz,
        yang.zhang.wz@...il.com, nitesh@...hat.com, konrad.wilk@...cle.com,
        david@...hat.com, pagupta@...hat.com, riel@...riel.com,
        lcapitulino@...hat.com, dave.hansen@...el.com,
        wei.w.wang@...el.com, aarcange@...hat.com, pbonzini@...hat.com,
        dan.j.williams@...el.com, alexander.h.duyck@...ux.intel.com,
        osalvador@...e.de
Subject: Re: [PATCH v13 3/6] mm: Introduce Reported pages

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;
 }
_