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 3172FEB64DC for ; Tue, 11 Jul 2023 21:11:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9o71t7/juosPc7UDaIVqInLG1kQRs9j5NmXCO9TLskA=; b=xZdg2OYKawr79B z1/FrjXmsyYqMbxb5TF4oTj0tJdgMmazrSUthedEc4KmSIW+tkgUObSPfglgZsLRR2tmwx3ZRSY2u f6vi9dfQKc33qsz/nNgVZpkla/oYAb6zdYA1efVUjqbi4cL7nqLPGPIAmkKQmzE0nWOBMwnk70Srp Sf3gDNlIerhFuDyPGPDfDHSJch6hv92SnfPHNA33RxZ0vx9IoQvFOPQo3PoQAMwmE4CxsH/plh+wx SIzs7O2J5MChzWXJ4Xy47zxBLLcGqbjA+Sz8/uE/tCXORWx+cgsF78Ic8jNCvAYPMigF1aZ49H/1N dnvFF1R9dpWI/NA7eP4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qJKdm-00FtmN-1p; Tue, 11 Jul 2023 21:11:22 +0000 Received: from mcgrof by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qJKdj-00Ftm9-2r; Tue, 11 Jul 2023 21:11:19 +0000 Date: Tue, 11 Jul 2023 14:11:19 -0700 From: Luis Chamberlain To: Matthew Wilcox Cc: David Hildenbrand , Ryan Roberts , Andrew Morton , "Kirill A. Shutemov" , Yin Fengwei , Yu Zhao , Catalin Marinas , Will Deacon , Anshuman Khandual , Yang Shi , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 0/5] variable-order, large folios for anonymous memory Message-ID: References: <20230703135330.1865927-1-ryan.roberts@arm.com> <78159ed0-a233-9afb-712f-2df1a4858b22@redhat.com> <4d4c45a2-0037-71de-b182-f516fee07e67@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jul 07, 2023 at 02:12:01PM +0100, Matthew Wilcox wrote: > On Fri, Jul 07, 2023 at 01:40:53PM +0200, David Hildenbrand wrote: > > > Is swapping working as expected? zswap? > > Suboptimally. Swap will split folios in order to swap them. Wouldn't that mean if high order folios are used a lot but swap is also used, until this is fixed you wouldn't get the expected reclaim gains for high order folios and we'd need compaction more then? > Somebody needs to fix that, but it should work. As we look at shmem stuff it was on the path so something we have considered doing. Ie, it's on our team's list of items to help with but currently on a backburner. Luis _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel