linux-kernel - linux-next: build failure after merge of the akpm-current tree

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Message-ID: <20210521155359.13b023ff@canb.auug.org.au>
Date:   Fri, 21 May 2021 15:53:59 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Muchun Song <songmuchun@...edance.com>,
        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: linux-next: build failure after merge of the akpm-current tree

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.

-- 
Cheers,
Stephen Rothwell

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