linux-kernel - Re: [External] linux-next: build failure after merge of the akpm-current tree

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Date:   Fri, 21 May 2021 14:09:56 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Oscar Salvador <osalvador@...e.de>,
        Michal Hocko <mhocko@...e.com>,
        David Hildenbrand <david@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Xiongchun Duan <duanxiongchun@...edance.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: [External] linux-next: build failure after merge of the
 akpm-current tree

On Fri, May 21, 2021 at 1:54 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging the akpm-current tree, today's linux-next build (arm
> multi_v7_defconfig) failed like this:
>
> mm/migrate.c: In function 'unmap_and_move_huge_page':
> mm/migrate.c:1295:6: error: implicit declaration of function 'hugetlb_page_subpool' [-Werror=implicit-function-declaration]
>  1295 |  if (hugetlb_page_subpool(hpage) && !page_mapping(hpage)) {
>       |      ^~~~~~~~~~~~~~~~~~~~
>
> Caused by commit
>
>   b63794a67ae2 ("mm: migrate: fix missing update page_private to hugetlb_page_subpool")
>
> CONFIG_HUGETLB_PAGE is not defined for this build.
>
> I have reverted that commit for today.

Thanks for your test. It has been fixed by the following patch.

https://lore.kernel.org/linux-mm/20210521022747.35736-1-songmuchun@bytedance.com/

>
> --
> Cheers,
> Stephen Rothwell