Re: [PATCH 1/1] mm/hugetlb: do not dissolve gigantic pages without runtime support

[Muchun Song]

> On Aug 18, 2026, at 00:20, Longlong Xia <xialonglong2025@xxxxxxx> wrote:
> 
> From: Longlong Xia <xialonglong@xxxxxxxxxx>
> 
> dissolve_free_hugetlb_folio() doesn't check hstate_is_gigantic_no_runtime(h)
> though remove_hugetlb_folio()/update_and_free_hugetlb_folio() silently
> bail for such folios, so it frees a still-listed folio and, on vmemmap
> restore failure, the add_hugetlb_folio() rollback corrupts the free
> list.
> 
> Link: https://sashiko.dev/#/patchset/20260814083027.1419487-1-xialonglong2025@xxxxxxx
> Fixes: 6eb4e88a6d27 ("hugetlb: create remove_hugetlb_page() to separate functionality")
> Assisted-by: Codex:gpt-5.6-sol
> Signed-off-by: Longlong Xia <xialonglong@xxxxxxxxxx>

Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>

Thanks.