From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A16B0CA0EFA for ; Sat, 23 Aug 2025 06:41:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QFfb/Sn4tzsBL8+lFf8/4nSkR7hbOY5oXUR5CVb78zM=; b=xJQaE9jFHW1JvDSQjvKbkuIEs7 UYfxriDpk3s51esK/cpnlK0LVaxz6zY+ObqmSgCDPUz+8lF6zjPY8Pq1Gxu8QK+qzuVw9osrCnY3T s1FMDIzsDgwQGnqfZxaY0jz6j3y1RPrQ4rxIK/VXeczva/KOo8n59KOp4N/DdDcPrNLdFNuA3C0k9 XQBCvH547/H/TPu/65UhFmWeG6xZas9MsOqfYgkiEKdEpujkoUsDNB9S7csTCrg+yQ6/Xt8cduYzY pAkuYo+5BQ4aonpX3okhDSxQW7P9N0zzSwm1STSU+NEgC8n8yaWG42w9jCWLgAssRBhq7K8yDa3Zq RL2Ae//Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uphvt-00000004CTr-0Vmz; Sat, 23 Aug 2025 06:40:57 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1upVF0-00000003Dbf-10XT; Fri, 22 Aug 2025 17:07:50 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 2DE1360203; Fri, 22 Aug 2025 17:07:49 +0000 (UTC) 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: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 [...]