Re: [PATCH v1 15/39] mm/huge_memory: batch rmap operations in __split_huge_pmd_locked()

From: Yin, Fengwei
Date: Thu Dec 14 2023 - 21:44:15 EST




On 12/11/2023 11:56 PM, David Hildenbrand wrote:
Let's use folio_add_anon_rmap_ptes(), batching the rmap operations.

While at it, use more folio operations (but only in the code branch we're
touching), use VM_WARN_ON_FOLIO(), and pass RMAP_EXCLUSIVE instead of
manually setting PageAnonExclusive.

We should never see non-anon pages on that branch: otherwise, the
existing page_add_anon_rmap() call would have been flawed already.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Yin Fengwei <fengwei.yin@xxxxxxxxx>