Re: [PATCH v5 05/11] mm: split a folio in minimum folio order chunks

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On 3 May 2024, at 5:53, Luis Chamberlain wrote:

> split_folio() and split_folio_to_list() assume order 0, to support
> minorder we must expand these to check the folio mapping order and use
> that.
>
> Set new_order to be at least minimum folio order if it is set in
> split_huge_page_to_list() so that we can maintain minimum folio order
> requirement in the page cache.
>
> Update the debugfs write files used for testing to ensure the order
> is respected as well. We simply enforce the min order when a file
> mapping is used.
>
> Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
> Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
> ---
>  include/linux/huge_mm.h | 12 ++++++----
>  mm/huge_memory.c        | 50 ++++++++++++++++++++++++++++++++++++++---
>  2 files changed, 55 insertions(+), 7 deletions(-)
>
It makes sense to me. Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>

--
Best Regards,
Yan, Zi

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