Re: [PATCH v1 06/36] mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof()

From: Wei Yang
Date: Thu Aug 28 2025 - 03:32:19 EST


On Thu, Aug 28, 2025 at 12:01:10AM +0200, David Hildenbrand wrote:
>Let's reject them early, which in turn makes folio_alloc_gigantic() reject
>them properly.
>
>To avoid converting from order to nr_pages, let's just add MAX_FOLIO_ORDER
>and calculate MAX_FOLIO_NR_PAGES based on that.
>
>Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
>Acked-by: SeongJae Park <sj@xxxxxxxxxx>
>Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Reviewed-by: Wei Yang <richard.weiyang@xxxxxxxxx>

--
Wei Yang
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