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Thu, 28 Aug 2025 00:31:51 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3c9c9324dc9sm14883755f8f.3.2025.08.28.00.31.50 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 28 Aug 2025 00:31:50 -0700 (PDT) Date: Thu, 28 Aug 2025 07:31:50 +0000 From: Wei Yang To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, Zi Yan , SeongJae Park , Alexander Potapenko , Andrew Morton , Brendan Jackman , Christoph Lameter , Dennis Zhou , Dmitry Vyukov , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, iommu@lists.linux.dev, io-uring@vger.kernel.org, Jason Gunthorpe , Jens Axboe , Johannes Weiner , John Hubbard , kasan-dev@googlegroups.com, kvm@vger.kernel.org, "Liam R. Howlett" , Linus Torvalds , linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-ide@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mips@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, Lorenzo Stoakes , Marco Elver , Marek Szyprowski , Michal Hocko , Mike Rapoport , Muchun Song , netdev@vger.kernel.org, Oscar Salvador , Peter Xu , Robin Murphy , Suren Baghdasaryan , Tejun Heo , virtualization@lists.linux.dev, Vlastimil Babka , wireguard@lists.zx2c4.com, x86@kernel.org Subject: Re: [PATCH v1 06/36] mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof() Message-ID: <20250828073150.jyafkufvkjfqwp3f@master> Reply-To: Wei Yang References: <20250827220141.262669-1-david@redhat.com> <20250827220141.262669-7-david@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250827220141.262669-7-david@redhat.com> User-Agent: NeoMutt/20170113 (1.7.2) 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 >Acked-by: SeongJae Park >Signed-off-by: David Hildenbrand Reviewed-by: Wei Yang -- Wei Yang Help you, Help me