Re: [next] mm/gup.c:96:10: error: implicit declaration of function 'is_zero_pfn' [-Werror,-Wimplicit-function-declaration]

[Pavel Tatashin <pasha.tatashin@soleen.com>]

The same problem as fixed here:
https://lore.kernel.org/linux-mm/CA+CK2bBjC8=cRsL5VhWkcevPsqSXWhsANVjsFNMERLT8vWtiQw@mail.gmail.com/

Thank you,
Pasha

On Tue, Feb 2, 2021 at 9:32 AM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> Linux next tag 20210202 arm, riscv and sh builds with allnoconfig and
> tinyconfig failed due to build errors.
>
>
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=arm
> CROSS_COMPILE=arm-linux-gnueabihf- 'HOSTCC=sccache clang' 'CC=sccache
> clang' zImage
>  mm/gup.c:96:10: error: implicit declaration of function 'is_zero_pfn'
> [-Werror,-Wimplicit-function-declaration]
>                              !is_pinnable_page(page)))
>                               ^
>  include/linux/mm.h:1133:3: note: expanded from macro 'is_pinnable_page'
>                 is_zero_pfn(page_to_pfn(page)))
>                 ^
>  mm/gup.c:96:10: note: did you mean 'is_zero_ino'?
>  include/linux/mm.h:1133:3: note: expanded from macro 'is_pinnable_page'
>                 is_zero_pfn(page_to_pfn(page)))
>                 ^
>  include/linux/fs.h:3045:20: note: 'is_zero_ino' declared here
> static inline bool is_zero_ino(ino_t ino)
>                    ^
> 1 error generated.
>
> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
>
> steps to reproduce:
> --------------------------
> # TuxMake is a command line tool and Python library that provides
> # portable and repeatable Linux kernel builds across a variety of
> # architectures, toolchains, kernel configurations, and make targets.
> #
> # TuxMake supports the concept of runtimes.
> # See https://docs.tuxmake.org/runtimes/, for that to work it requires
> # that you install podman or docker on your system.
> #
> # To install tuxmake on your system globally:
> # sudo pip3 install -U tuxmake
> #
> # See https://docs.tuxmake.org/ for complete documentation.
>
> tuxmake --runtime podman --target-arch arm --toolchain clang-11
> --kconfig allnoconfig
>
> build details:
> https://builds.tuxbuild.com/1nv9wkY1T8wug0sEw2kwuFKLxhK/
>
> Regressions found on sh:
>
>    - build/gcc-10-allnoconfig
>    - build/gcc-9-tinyconfig
>    - build/gcc-8-allnoconfig
>    - build/gcc-10-tinyconfig
>    - build/gcc-9-allnoconfig
>    - build/gcc-8-tinyconfig
>
> Regressions found on riscv:
>
>    - build/gcc-10-allnoconfig
>    - build/clang-11-tinyconfig
>    - build/clang-10-allnoconfig
>    - build/clang-11-allnoconfig
>    - build/gcc-9-tinyconfig
>    - build/gcc-8-allnoconfig
>    - build/gcc-10-tinyconfig
>    - build/clang-10-tinyconfig
>    - build/gcc-9-allnoconfig
>    - build/gcc-8-tinyconfig
>
> Regressions found on arm:
>
>    - build/gcc-10-allnoconfig
>    - build/clang-11-tinyconfig
>    - build/clang-10-allnoconfig
>    - build/clang-11-allnoconfig
>    - build/gcc-9-tinyconfig
>    - build/gcc-8-allnoconfig
>    - build/gcc-10-tinyconfig
>    - build/clang-10-tinyconfig
>    - build/gcc-9-allnoconfig
>    - build/gcc-8-tinyconfig
>
>
> - Naresh