Re: [PATCH v8 2/3] mm/rmap: integrate PMD-mapped folio splitting into pagewalk loop

From: David Hildenbrand
Date: Fri Jun 14 2024 - 03:35:22 EST


On 14.06.24 03:51, Lance Yang wrote:
In preparation for supporting try_to_unmap_one() to unmap PMD-mapped
folios, start the pagewalk first, then call split_huge_pmd_address() to
split the folio.

Suggested-by: David Hildenbrand <david@xxxxxxxxxx>
Suggested-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Signed-off-by: Lance Yang <ioworker0@xxxxxxxxx>
---

Would have converted that VM_BUG_ON to a VM_WARN_ON_ONCE, but it's just moving code, so no big deal.

Thanks!

Acked-by: David Hildenbrand <david@xxxxxxxxxx>

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Cheers,

David / dhildenb