From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 444CC312802; Fri, 22 Aug 2025 17:07:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755882469; cv=none; b=oK1zHiIzrhSOspR+0B4eMECAi/HhhMR7O0QGF8c4crZur6t6uo93t0VpvKOQSQ6tqp3vD+ecBoJ9rK2eWYjMNF6kPGqd1zGepZ4cQWICVMGefR7FCpNkYiZYXXR7Tlb1NTRGExsMxyjsABqc1/97N6V0MBA82ivCWaG10qsf2z0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755882469; c=relaxed/simple; bh=vZLAjgh0rHfPoMdjN4T/8EdoC5/y95Yj/31fEqm5lgA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Z3fHJU6pTKNk6CdzkHGzCZr1c6A28Lx5XDeC1JTKxJQEybE92VdunBr/b6c0ZgJ28l7d3QVDhI7Ltb0bIEyj4YYNhKFHFhwLrEbz0mOQ2eB0VoAjA9JyMg+lNjzaWww1FlYU31Xpz+7qSRxznNhFRJd/w+MjzUJnC3n2ki2hzTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fSplAPAb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fSplAPAb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD1D1C4CEF4; Fri, 22 Aug 2025 17:07:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755882468; bh=vZLAjgh0rHfPoMdjN4T/8EdoC5/y95Yj/31fEqm5lgA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fSplAPAbcqCwXrc73KaBOQNzaayHHHryXHEfz/QvCIP5+OLUcuUqhayGQU30an1Hx YGDC2ch0190J8ZS7lR1jUdP6OQwlEiLMILXs/CkC/SlPI/9/wAF5EXwIZ0nb0Uecnj UA9Ha7hLdu3BvCtDoUnTti40P6RP3bVkvwZuA5UDhaj8Dob3g32dp2vkLL6LUz2Uga JrNca6OOm6CtiYGSnyjbJHFyuYTMa9sirnIIEndUMU2kE26IZfHRAqBcN1+HEuWJKI iH1nd0618aV38WN9VJmQt9ibmxV/jw/X7xirOs3F2GwN8kBuIL5KMKravrNObUYubi MyQ+vWsMpUjxQ== From: SeongJae Park To: David Hildenbrand Cc: SeongJae Park , linux-kernel@vger.kernel.org, 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, Zi Yan Subject: Re: [PATCH RFC 06/35] mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof() Date: Fri, 22 Aug 2025 10:07:46 -0700 Message-Id: <20250822170746.53309-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250821200701.1329277-7-david@redhat.com> References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, 21 Aug 2025 22:06:32 +0200 David Hildenbrand wrote: > Let's reject them early, I like early failures. :) > 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. > > Signed-off-by: David Hildenbrand Acked-by: SeongJae Park Thanks, SJ [...]