Re: [PATCH v10 0/2] mm/memory_hotplug: optimize zone contiguous check when changing pfn range

[David Hildenbrand]

On Sun, 20 Sep 2026 04:49:44 -0400, Yuan Liu wrote:
> This series introduces a pages_with_online_memmap member into struct
> zone to avoid pageblock-by-pageblock scans across the entire zone and
> improve memory hotplug performance.
> 
> Approach
> ========
> Add a new zone member, pages_with_online_memmap, that tracks the
> number of pages within the zone span that have an online memory map,
> including present pages and memory holes whose memory map has been
> initialized and for which pfn_to_online_page() succeeds.
> 
> [...]

Applied, thanks!

tree: mm/core.git
branch: memhp-7.4.misc

Applied patches will appear soon in mm-next, followed by linux-next.

Please report any outstanding bugs that were missed during review, so we
can either drop the patch series or decide how to fix it up.

It is encouraged to provide Acked-bys, Reviewed-bys, and Tested-bys even
though the patches have already been applied. If possible, patch trailers
will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. Further, this is not a guarantee that the
patches will go upstream. If in doubt, please check the listed branch.

[1/2] mm/memory_hotplug: make shrink_zone_span() more robust
      https://git.kernel.org/mm/core/c/1a3fed34
[2/2] mm/memory_hotplug: optimize zone contiguous check when changing pfn range
      https://git.kernel.org/mm/core/c/554e941f

-- 
Cheers,

David