netdev - Re: [PATCH v1 06/36] mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range

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Message-ID: <20250828073150.jyafkufvkjfqwp3f@master>
Date: Thu, 28 Aug 2025 07:31:50 +0000
From: Wei Yang <richard.weiyang@...il.com>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, Zi Yan <ziy@...dia.com>,
	SeongJae Park <sj@...nel.org>,
	Alexander Potapenko <glider@...gle.com>,
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Subject: Re: [PATCH v1 06/36] mm/page_alloc: reject unreasonable
 folio/compound page sizes in alloc_contig_range_noprof()

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@...dia.com>
>Acked-by: SeongJae Park <sj@...nel.org>
>Signed-off-by: David Hildenbrand <david@...hat.com>

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

-- 
Wei Yang
Help you, Help me