Subject: Re: linux-next: build failure after merge of the mm-hotfixes tree

From: Kefeng Wang <[email-masked]>
Date: Tue, 13 Dec 2022 09:34:24 +0800

Hi, this patch relays on Tony Luck's Patch series "Copy-on-write poison 
recovery".[1]
and tested ppc64_defconfig based on next-20221208, it's no build failure

I think it is not very hotfix, also will send v3 to address some comments
we could adjust the patch order in mm tree, thanks.

[1] 
https://lore.kernel.org/all/[email-masked]/ 

On 2022/12/13 6:30, Stephen Rothwell wrote:
> Hi all,
>
> After merging the mm-hotfixes tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> mm/ksm.c: In function 'ksm_might_need_to_copy':
> mm/ksm.c:2605:21: error: implicit declaration of function 'copy_mc_user_highpage'; did you mean 'copy_user_highpage'? [-Werror=implicit-function-declaration]
>   2605 |                 if (copy_mc_user_highpage(new_page, page, address, vma)) {
>        |                     ^~~~~~~~~~~~~~~~~~~~~
>        |                     copy_user_highpage
>
> Caused by commit
>
>    b7edf4b1cdb1 ("mm: hwpoison: support recovery from ksm_might_need_to_copy()")
>
> I have reverted that commit for today.
>