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

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Message-ID: <20220207150621.0273b095@canb.auug.org.au>
Date:   Mon, 7 Feb 2022 15:06:21 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     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 folio tree

Hi all,

After merging the folio tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

mm/page_vma_mapped.c: In function 'page_vma_mapped_walk':
mm/page_vma_mapped.c:219:48: error: implicit declaration of function 'pmd_pfn'; did you mean 'pmd_off'? [-Werror=implicit-function-declaration]
  219 |                                 if (!check_pmd(pmd_pfn(pmde), pvmw))
      |                                                ^~~~~~~
      |                                                pmd_off

Caused by commit

  02ecfe9b9580 ("mm: Convert page_vma_mapped_walk to work on PFNs")

Presumably you need to explicitly include <linux/pgtable.h>?

I have used the folio tree from next-20220204 for today.

-- 
Cheers,
Stephen Rothwell

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