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

Yin, Fengwei
2023-12-15T02:39:56Z

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@redhat.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>