[PATCH v7 0/6] mm: Fix vmemmap optimization accounting and initialization

[Muchun Song]

> On Apr 27, 2026, at 03:54, Andrew Morton <akpm at linux-foundation.org> wrote:
> 
> On Sun, 26 Apr 2026 17:26:34 +0800 Muchun Song <songmuchun at bytedance.com> wrote:
> 
>> The series fixes several bugs in vmemmap optimization, mainly around
>> incorrect page accounting and memmap initialization in DAX and memory
>> hotplug paths. It also fixes pageblock migratetype initialization and
>> struct page initialization for ZONE_DEVICE compound pages.
> 
> Thanks.  I'm assuming that none of this is urgent, so there's no need
> to fast-track any of these fixes into 7.1-rcX?

Not urgent.

> 
> So the cc:stable patches will be offered to -stable maintainers after
> 7.2-rc1 is released?

No problem.

> 
> Sashiko might have found another bug in there btw
>    https://sashiko.dev/#/patchset/20260426092640.375967-1-songmuchun@bytedance.com

I see. it’s a real issue, but not introduced by this series.
I’ve sent a separate series to fix this issue.

See https://lore.kernel.org/linux-mm/20260426144447.817722-1-songmuchun@bytedance.com/

Thanks.
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