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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Wed, 5 Jan 2022 20:01:19 +0530
Message-ID: <CA+G9fYvXfD3wS8eJV6A6GygqhJb3AUF9OROQAkBRRTN+thVo-g@mail.gmail.com>
Subject: [next] mm/shmem.c:3993:5: error: conflicting types for 'shmem_unuse';
 have 'int(unsigned int, long unsigned int *)'
To:     linux-mm <linux-mm@kvack.org>,
        open list <linux-kernel@vger.kernel.org>,
        Linux-Next Mailing List <linux-next@vger.kernel.org>
Cc:     Hugh Dickins <hughd@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Christoph Hellwig <hch@lst.de>,
        Juergen Gross <jgross@suse.com>,
        Dan Streetman <ddstreet@ieee.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Matthew Wilcox <willy@infradead.org>,
        Seth Jennings <sjenning@redhat.com>,
        Vitaly Wool <vitaly.wool@konsulko.com>,
        lkft-triage@lists.linaro.org
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[Please ignore this email if it already reported]
A large number of build failures noticed on Linux next for all arch's with
 - tinyconfig
 - allnoconfig

Build Error:
-------------
mm/shmem.c:3993:5: error: conflicting types for 'shmem_unuse'; have
'int(unsigned int,  long unsigned int *)'
 3993 | int shmem_unuse(unsigned int type, unsigned long *fs_pages_to_unuse)
      |     ^~~~~~~~~~~
In file included from include/linux/khugepaged.h:6,
                 from mm/shmem.c:37:
include/linux/shmem_fs.h:86:5: note: previous declaration of
'shmem_unuse' with type 'int(unsigned int)'
   86 | int shmem_unuse(unsigned int type);
      |     ^~~~~~~~~~~
make[2]: *** [scripts/Makefile.build:289: mm/shmem.o] Error 1

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>

Build link: https://builds.tuxbuild.com/23GvPWRYOYokAPaEnhSYeOKuKCk/
Kconfig: https://builds.tuxbuild.com/23GvPWRYOYokAPaEnhSYeOKuKCk/config

Steps to reproduce:
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake

tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11
--kconfig tinyconfig

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https://lkft.linaro.org