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

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Date:   Tue, 5 Nov 2019 21:19:20 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mike Kravetz <mike.kravetz@...cle.com>
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 (powerpc64
allnoconfig) failed like this:

In file included from arch/powerpc/mm/mem.c:30:
include/linux/hugetlb.h:233:19: error: redefinition of 'pmd_huge'
  233 | static inline int pmd_huge(pmd_t pmd)
      |                   ^~~~~~~~
In file included from arch/powerpc/include/asm/book3s/64/pgtable.h:301,
                 from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20,
                 from arch/powerpc/include/asm/book3s/64/mmu.h:46,
                 from arch/powerpc/include/asm/mmu.h:356,
                 from arch/powerpc/include/asm/lppaca.h:47,
                 from arch/powerpc/include/asm/paca.h:17,
                 from arch/powerpc/include/asm/current.h:13,
                 from include/linux/sched.h:12,
                 from arch/powerpc/mm/mem.c:16:
arch/powerpc/include/asm/book3s/64/pgtable-4k.h:74:19: note: previous definition of 'pmd_huge' was here
   74 | static inline int pmd_huge(pmd_t pmd) { return 0; }
      |                   ^~~~~~~~
In file included from arch/powerpc/mm/mem.c:30:
include/linux/hugetlb.h:238:19: error: redefinition of 'pud_huge'
  238 | static inline int pud_huge(pud_t pud)
      |                   ^~~~~~~~
In file included from arch/powerpc/include/asm/book3s/64/pgtable.h:301,
                 from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20,
                 from arch/powerpc/include/asm/book3s/64/mmu.h:46,
                 from arch/powerpc/include/asm/mmu.h:356,
                 from arch/powerpc/include/asm/lppaca.h:47,
                 from arch/powerpc/include/asm/paca.h:17,
                 from arch/powerpc/include/asm/current.h:13,
                 from include/linux/sched.h:12,
                 from arch/powerpc/mm/mem.c:16:
arch/powerpc/include/asm/book3s/64/pgtable-4k.h:75:19: note: previous definition of 'pud_huge' was here
   75 | static inline int pud_huge(pud_t pud) { return 0; }
      |                   ^~~~~~~~

Caused by commit

  9823e12e021f ("hugetlbfs: convert macros to static inline, fix sparse warning")

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell

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