next: mm/khugepaged.c:1702:30: error: implicit declaration of function 'vma_try_start_write'; did you mean 'vma_start_write'? [-Werror=implicit-function-declaration]

next: mm/khugepaged.c:1702:30: error: implicit declaration of function 'vma_try_start_write'; did you mean 'vma_start_write'? [-Werror=implicit-function-declaration]

[Naresh Kamboju]

Following build regression noticed on i386, mips and s390.

mm/khugepaged.c: In function 'retract_page_tables':
mm/khugepaged.c:1702:30: error: implicit declaration of function
'vma_try_start_write'; did you mean 'vma_start_write'?
[-Werror=implicit-function-declaration]
 1702 |                         if (!vma_try_start_write(vma))
      |                              ^~~~~~~~~~~~~~~~~~~
      |                              vma_start_write
cc1: all warnings being treated as errors

build details:
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230306/testrun/15286608/suite/build/test/gcc-11-lkftconfig-rcutorture/details/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230306/testrun/15286608/suite/build/test/gcc-11-lkftconfig-rcutorture/log

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

tuxmake --runtime podman \
         --target-arch i386 \
         --toolchain gcc-12 \
         --kconfig
https://storage.tuxsuite.com/public/linaro/lkft/builds/2McWOXP1OH5MiYficVNv8hJCR4F/config

Similar issues have been reported and discussed on the mailing list.
- https://lore.kernel.org/all/20230305191335.fee8e6aa285b0ca771cab9dd@linux-foundation.org/

--
Linaro LKFT
https://lkft.linaro.org

Re: next: mm/khugepaged.c:1702:30: error: implicit declaration of function 'vma_try_start_write'; did you mean 'vma_start_write'? [-Werror=implicit-function-declaration]

[Suren Baghdasaryan]

On Mon, Mar 6, 2023 at 3:13 AM Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> Following build regression noticed on i386, mips and s390.
>
> mm/khugepaged.c: In function 'retract_page_tables':
> mm/khugepaged.c:1702:30: error: implicit declaration of function
> 'vma_try_start_write'; did you mean 'vma_start_write'?
> [-Werror=implicit-function-declaration]
>  1702 |                         if (!vma_try_start_write(vma))
>       |                              ^~~~~~~~~~~~~~~~~~~
>       |                              vma_start_write
> cc1: all warnings being treated as errors

Thanks for reporting. I posted a fix over the weekend:
https://lore.kernel.org/all/20230304232856.DD36BC433D2@smtp.kernel.org/
which should be merged soon.

>
> build details:
> - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230306/testrun/15286608/suite/build/test/gcc-11-lkftconfig-rcutorture/details/
> - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230306/testrun/15286608/suite/build/test/gcc-11-lkftconfig-rcutorture/log
>
> # To install tuxmake on your system globally:
> # sudo pip3 install -U tuxmake
> #
>
> tuxmake --runtime podman \
>          --target-arch i386 \
>          --toolchain gcc-12 \
>          --kconfig
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2McWOXP1OH5MiYficVNv8hJCR4F/config
>
> Similar issues have been reported and discussed on the mailing list.
> - https://lore.kernel.org/all/20230305191335.fee8e6aa285b0ca771cab9dd@linux-foundation.org/
>
> --
> Linaro LKFT
> https://lkft.linaro.org