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Thu, 21 Nov 2019 19:57:47 +1100 (AEDT) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 21 Nov 2019 00:57:43 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 21 Nov 2019 00:57:42 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 21 Nov 2019 00:57:42 -0800 Received: from [10.2.169.101] (10.124.1.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 21 Nov 2019 08:57:41 +0000 Subject: Re: [PATCH v7 05/24] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages To: Christoph Hellwig References: <20191121071354.456618-1-jhubbard@nvidia.com> <20191121071354.456618-6-jhubbard@nvidia.com> <20191121080555.GC24784@lst.de> From: John Hubbard X-Nvconfidentiality: public Message-ID: Date: Thu, 21 Nov 2019 00:54:53 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20191121080555.GC24784@lst.de> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL101.nvidia.com (172.20.187.10) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1574326663; bh=YGQbxCYiHGws7JmssYZZfu4b/BH3QCdRJ1MPzdi8DdI=; h=X-PGP-Universal:Subject:To:CC:References:From:X-Nvconfidentiality: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=FbrZ4378j2iyBO9hvWSMloyNdNsTUz/psuT/NCUARgzB35AW0Wq9ueJvfblZCosk7 /+/rxtO6ichr/aFPIlD7xLBQtc9hq7EFIF6lCnNn9hnclEWNCKgA7YoyhRbt/m4Vsk wRmCgWdXHHISljd4LjYmGbzccrPj5+Fa1JlqaI75caluLphJJldJZkgCWUPC0xholt 6X13AINTENnATeVUOSXXiPHblxU1cCkaaO1aE9kIv76y0chkTgEt3S0BIhZzBbKb9q pD1vYn6vGejSUU1Vf+Wlw9+f+WagzvL/JI66W61oW1V6Mdo52NCQD9IyiBTxjX+ttQ VAYphrAfRS+XQ== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , linux-media@vger.kernel.org, Shuah Khan , linux-block@vger.kernel.org, =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 11/21/19 12:05 AM, Christoph Hellwig wrote: > So while this looks correct and I still really don't see the major > benefit of the new code organization, especially as it bloats all > put_page callers. > > I'd love to see code size change stats for an allyesconfig on this > commit. > Right, I'm running that now, will post the results. (btw, if there is a script and/or standard format I should use, I'm all ears. I'll dig through lwn...) thanks, -- John Hubbard NVIDIA