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 X-Spam-Level: X-Spam-Status: No, score=-5.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1698C433E2 for ; Tue, 15 Sep 2020 10:07:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B65C521D7B for ; Tue, 15 Sep 2020 10:07:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="lMEpCcVE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726192AbgIOKHl (ORCPT ); Tue, 15 Sep 2020 06:07:41 -0400 Received: from mout.gmx.net ([212.227.17.22]:41619 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726119AbgIOKHf (ORCPT ); Tue, 15 Sep 2020 06:07:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1600164450; bh=MNJqGD5nhFUh47kCkgrjnjqFJoyOE7SZhlQgu9fZjuY=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=lMEpCcVEPv02PVbsecr2Skz51+Fcm8s9QfImmDJIIpH6e0Xq8o05j6xh4ArF4I51i HT/5dhdOuCT8qA3MXNMgoRVeMvHCu4BuCzd8rvdpwbKD2M6PFsKkWeDLbCCZkAm5tc /njPInJtQ89Z0Y3u1CLVsCDooCETjMLVVXtUDdpk= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MWAOQ-1jyy9j2t6w-00Xc4p; Tue, 15 Sep 2020 12:07:30 +0200 Subject: Re: [PATCH v2 07/19] btrfs: update num_extent_pages() to support subpage sized extent buffer To: Johannes Thumshirn , Qu Wenruo , "linux-btrfs@vger.kernel.org" References: <20200915053532.63279-1-wqu@suse.com> <20200915053532.63279-8-wqu@suse.com> From: Qu Wenruo Autocrypt: addr=quwenruo.btrfs@gmx.com; prefer-encrypt=mutual; keydata= mQENBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAG0IlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT6JAU4EEwEIADgCGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCXZw1oQAKCRDC PZHzoSX+qCY6CACd+mWu3okGwRKXju6bou+7VkqCaHTdyXwWFTsr+/0ly5nUdDtT3yEVggPJ 3VP70wjlrxUjNjFb6iIvGYxiPOrop1NGwGYvQktgRhaIhALG6rPoSSAhGNjwGVRw0km0PlIN D29BTj/lYEk+jVM1YL0QLgAE1AI3krihg/lp/fQT53wLhR8YZIF8ETXbClQG1vJ0cllPuEEv efKxRyiTSjB+PsozSvYWhXsPeJ+KKjFen7ebE5reQTPFzSHctCdPnoR/4jSPlnTlnEvLeqcD ZTuKfQe1gWrPeevQzgCtgBF/WjIOeJs41klnYzC3DymuQlmFubss0jShLOW8eSOOWhLRuQEN BFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcgaCbPEwhLj 1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj/IrRUUka 68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fNGSsRb+pK EKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0q1eW4Jrv 0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEvABEBAAGJ ATwEGAEIACYCGwwWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCXZw1rgUJCWpOfwAKCRDCPZHz oSX+qFcEB/95cs8cM1OQdE/GgOfCGxwgckMeWyzOR7bkAWW0lDVp2hpgJuxBW/gyfmtBnUai fnggx3EE3ev8HTysZU9q0h+TJwwJKGv6sUc8qcTGFDtavnnl+r6xDUY7A6GvXEsSoCEEynby 72byGeSovfq/4AWGNPBG1L61Exl+gbqfvbECP3ziXnob009+z9I4qXodHSYINfAkZkA523JG ap12LndJeLk3gfWNZfXEWyGnuciRGbqESkhIRav8ootsCIops/SqXm0/k+Kcl4gGUO/iD/T5 oagaDh0QtOd8RWSMwLxwn8uIhpH84Q4X1LadJ5NCgGa6xPP5qqRuiC+9gZqbq4Nj Message-ID: <56c0c885-fb75-36d3-00de-202ea53b1b0b@gmx.com> Date: Tue, 15 Sep 2020 18:07:26 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="3fzIuSauCBmPd09e1Jc89lSqQjej3uTNo" X-Provags-ID: V03:K1:6ld0ldt17ErhnoAITsiUnTaGzH/HO8BmmNMvF3NXKw/9OuTZPLO IcjD3iKJyOE7w1N4E5pesfBkDbqrfdBn+UF38MsKVJK9ktY0yNYzFQlEPHtnDFw/biAFDJx wc/y2X9jO3RQ4dPgFEaE/AmEBFTpUMDmzZtPLh0F984jhMh49efWm506B10PvlmUnzlxNJe 1E8jBP0Zqj2jgXxei/ocA== X-UI-Out-Filterresults: notjunk:1;V03:K0:nG79zx8lwog=:mcYxghgLudTSH5Rdsqm+Fj wH8JFiHoPD17WM2D2Zeuu9JdH4lpWvlwr1KMIwEU/vxsz/danBmYMH3QSXCFTGygppnMozhYg 4KDpTwozZu+ssV1wIwSpalvfptGu/Bx7EZ5auVhdzz/aRwhz7DajzH8vJDv8XPsqHvA4paYpR QbtXo7KJasFBmOhzQXJi88j8aomQMBYsvFeH36W5HA0wFfMYU3kbS9dIKi6i1EL1tnbHdUu0H r80sqYQQlt2YR57UzvRbJah9xP+vSHuItVkQcKsnKe3/jxgeeA49tpz7Nj6lQb6fqLVP+Mk7m 7pYh4UAFcFdjV7EyLfO5M0Zr4tF9w6BjjBJqckcJcbV+kqyhxj9/y7IDL0rCGiESpczroU05m ywhdQkzF1BWzf3foWidI1jCMZotBJylx98U+E3tPANZtHjZ9wCgRCPIw3jNkINyxOhQMrKIz5 HyOCL63od9agNyiziqlfLITzFIlmtnAVMMeqQiCoaijZF8QWJFxS3OfmKoDUDUCOQiVC7hmzD cqDhsctt/Br1eTbKPRKuzC7vCuXwfcle9RBFc9ARXnKbep4oZMB+ZyihxYYncW8cSZ1+D0mGd LYl6jxn5JXBwr6G6SSbtVZKlPOk0KrSSEFilLFdPyb//aoFs7u5mxVB+NaTS+Ep7DjR1gviQv Iedvjahw6Pg7FoQqUmoHwfkymRrI+YZCq9dJmcTc06/HFA54FuvrTNct4sdm/r6w4HgOWXFDk FvE5OnB3VydBgjEZbrD4stqj+EDhsjpQ3KS3eqodY80nsfIyb5Ik/s0tnlPrL4PpiiytMRhGN 6Ddsub5BBqzt+WIkSu8LGaVPKeKSSMlUsC8+xQDrLfrpIT7ih80ByUaH1gU1mzfrvZ7S99PAe 6hzpAjb+LrwL4NchomGv4oRsFUnxXWgPYD2u82O30Ap04QcZhKlq/fiDLWyFlaPMzCoQHE4T0 homGfliUHD7IS7jdKw8UOKD0nEiRs1HhSsv4ntjJkwxHhchOMScf+A21yLDOKY6sxP49ty5HY KkYmihwEHE4W5tP/ARLdFOEjWzYOjj/mJbhAfaoyOVexTwbjOaRyuLV+DPnaTtWVDUbA7jwlU H0AU2+Olaa6qWnQocIuw3oJd/+fFEOULSqsSv3Uys8zwJaEefGRFOkAQrzykBHkUOtDL26Mfx 5t2fg4fgyKKYU58NZtADSFK0O2moVUxyTw57rCw8miQIE+pd60jYFuI/Hv0brOPOEdNHloj1f m38Szem6MsipbkBKjou0F8vftU90YBh0v/qH36g== Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --3fzIuSauCBmPd09e1Jc89lSqQjej3uTNo Content-Type: multipart/mixed; boundary="VeqYIhLWcBzbATeKJw7QUf1V6bGHOAi37" --VeqYIhLWcBzbATeKJw7QUf1V6bGHOAi37 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2020/9/15 =E4=B8=8B=E5=8D=884:42, Johannes Thumshirn wrote: > On 15/09/2020 07:36, Qu Wenruo wrote: >> + * For sectorsize < PAGE_SIZE case, we only want to support 64K >> + * PAGE_SIZE, and ensured all tree blocks won't cross page boundary.= >> + * So in that case we always got 1 page. >=20 > Just to clarify, does this mean we won't support 512B sector size with = 4K pages? >=20 At least that's why I have planned. I think the current minimal 4K sector size is pretty reasonable. Thanks, Qu --VeqYIhLWcBzbATeKJw7QUf1V6bGHOAi37-- --3fzIuSauCBmPd09e1Jc89lSqQjej3uTNo Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl9gkl4ACgkQwj2R86El /qj4CAf/dFDxJ7xkp1cNpBQw68AUAReu97XVIsQRa1k/vYaRAK3YXCBJ09VrPorU 93DBvapeHiaj1YmBBwY/ANtfrOkBaquvlM9gybKWLsHFNF9sm/89gA1KxBtPbC3G Zp998R+/KvYyAQJ8wP/aZdV5zJpBCE1fIkw7yQ83OB/8qFM20j8oTyIsaDPsLccS JpapGAqmUzg0i0iig1voJrv8C9UpQoJV38fkpb0Z5EfbF2c6S+nDdsWGLyJmAVRj Wdp94hIvGRf9TQ4fJSfrow3uw2OHCedGTQSBkRSZQUeK31fLKhfi6Pat36DqNRB3 a7NTT3njIERAcmMK1LRhDlovh2UDEw== =rJPa -----END PGP SIGNATURE----- --3fzIuSauCBmPd09e1Jc89lSqQjej3uTNo--