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

Wei Yang <[email protected]>
Newsgroups com.zx2c4.lists.wireguard,dev.linux.lists.iommu,dev.linux.lists.virtualization,org.freedesktop.lists.dri-devel,org.freedesktop.lists.intel-gfx,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-riscv,org.kernel.vger.io-uring,org.kernel.vger.kvm,org.kernel.vger.linux-crypto,org.kernel.vger.linux-ide,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kernel.vger.linux-mips,org.kernel.vger.linux-mmc,org.kernel.vger.linux-s390,org.kernel.vger.linux-scsi,org.kernel.vger.netdev,org.kvack.linux-mm
Message-ID <20250828073150.jyafkufvkjfqwp3f@master>
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 <[email protected]>
>Acked-by: SeongJae Park <[email protected]>
>Signed-off-by: David Hildenbrand <[email protected]>

Reviewed-by: Wei Yang <[email protected]>

-- 
Wei Yang
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