> On Oct 10, 2026, at 17:58, Mike Rapoport <[email protected]> wrote:
>
> On Sat, Oct 10, 2026 at 05:32:59PM +0800, Muchun Song wrote:
>>
>>
>>> On Oct 10, 2026, at 15:57, Muchun Song <[email protected]> wrote:
>>>
>>> For vmemmap-optimized sections, tail struct pages may be backed by
>>> shared vmemmap pages. Those shared pages must carry the same page zone
>>> ID as the struct pages initialized for the section.
>>>
>>> Warn in __init_single_page() if the shared tail page has a different
>>> page_zone_id(), which would indicate inconsistent initialization.
>>
>> Please ignore Sashiko's report [1], both are false positive. It didn't
>> realize that shared vmemmap pages are initialized early before
>> __init_single_page().
>
> I didn't realize it too when I read this first :)
>
> How about a short comment above vmemmap_optimization_verify_zone()?
Good point. A short comment there would be helpful.
Thanks,
Muchun
>
>> [1]
>> https://sashiko.dev/#/patchset/20261010075755.83339-1-songmuchun%40bytedance.com?part=6
>>
>> Thanks.
>
> --
> Sincerely yours,
> Mike.
