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 3FE7EC43461 for ; Tue, 15 Sep 2020 10:08:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E487E20771 for ; Tue, 15 Sep 2020 10:08:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="QYdyvqAl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726145AbgIOKIL (ORCPT ); Tue, 15 Sep 2020 06:08:11 -0400 Received: from mout.gmx.net ([212.227.15.18]:44207 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726130AbgIOKIJ (ORCPT ); Tue, 15 Sep 2020 06:08:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1600164483; bh=i5vo4cUTeV4qevUsaOoWddZSH+Vl5QO+92c5cN535Vw=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=QYdyvqAlAfiF1aIC7SoW6GONi/FYNMpE2uCgRKlFHbLo5xw/4VwcKn2X9bX1ZhsGZ JIFocgi+Yl+QNYPt+MRYiuxNsICI+yaaUUki3Us7+9Die79i7GdY5B18FV/dO173wl ycv9ClbGQC13CenXF4aHUvMxZQUT6GjqatV4jKQA= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx004 [212.227.17.184]) with ESMTPSA (Nemesis) id 1Mplc7-1kqONj1YDN-00q7G9; Tue, 15 Sep 2020 12:08:03 +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: <187cc0ea-99e1-fbe5-19f8-b6b1b1898d4e@gmx.com> Date: Tue, 15 Sep 2020 18:07:58 +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="FaYY8vMDGhVGv2hjLAronTfEutkAnlne7" X-Provags-ID: V03:K1:QTwW1+BwXTVjeQ5L5wJGiI6bpeb6y6reNVqeu17icUYnJaBWeCd HPa9Acs6uF8sO7Xreao+ch0ink7Lud5XZsz6k9LjfHWU339ohroq9vhZqFNWLxleIE7OFk9 JLqjxiF6QHr+8X85CkBZfB5TzMnPoaCPVEMYR/RmGkDipeUNfTcFN5pzf1RD+Xw1/5/SLED wr0g6hHkVGB5ByJZHA06g== X-UI-Out-Filterresults: notjunk:1;V03:K0:K7OlrVua7hY=:HCIWa+of6n40enPqZjPv+m RiqyGAzrzpxdFyG8bfD7+cJ6oShFW/yb6LuLFM34OwZX0xbk3t8HfvxCMrJ0GDFFmLenJVjVC OEIixy4iIAFvJ7Ucs0/WsbmYRIfdRLaAy2Fd3pd7++UMLH2q3/1jaZW8fDOxHX9RoVmaZNU7Q lmClNdu+ptoF8PKHv9YOLYT5ZwznTyvSugsCl4yNW0vgRn5K4KNLlf7Go4ba4G5k+n6t6Mh7o tIAg+zdWMaQu/byNptG6QvsdoJaquDXnjNDD8Ts56KmtlYUsXnUCvzQH/e7QWarvGLK9n9JWU CDV97+NymRJJEy5NnnIgrtiGCSJCJjGmZPMV/ok99mjlGv9GFYq9dXpdhALsHX8Y9AxM4ba06 VaCX4WE0i2DW8gAfIoSoMPg3s+z3u+AjdosjuRnK0vadooGkh50qPc5R+rQSW9hcRxsJKIl9L BBwU3VlKQtY/XrbYic/NntWL87MEy2xNnp148RltdNd4dp5Af6vAonZX330C9VaX7xF3vABEt 3PZvDdDIcxW7Y5NkZwa3Ij3lPkeT8XikT5M3BsF8tC0+FCFd9b/Rxq2OMy20YAnRzYiiLCmWI +ejZO0VL6c5mh+dkcCFZBMy5oAhc9+DruRczOD/ymOQ9/RF41cBPhMK0EamuCnNnfZyYDJCOJ 8AhzL0t2gIVT7WnNXabfZmY5PcVkucYbXb5FZXpxtOeMF1KYf1UG/ibcyG9D6Vstjb5t/Fzf8 s5CduodDclZs6AKu/PNuzzsFX0PbAr/xz+22/U8e/R6WBr90KTL/s9o65alJ/6+nqG4qYus2g vdT2K4MoskE6XwOzI8jRX3tYz3DvymNPKI9LHLuPKPt9s+SLGhMXFqvsuU3UlAafSj+VLM2eN TyCyDiqdmAz0Z/62c9J57yobIAdz62liKULtmpRVQU+NG1UczgCcR0lNLNIWl5nnJTeqJpdhm lVN3W+vySnhijP/wbzKYtDhUtRpkih0qRFBTnAA+n4yD1C6SudQa8orWhllUT7Rb+ny9dZvP0 z4Pc/+KPiL+sfV+T74mKpueEl7BpQAXwYdKdZ6zcYIsZH8Q9sPNZFQyjvEwkZbC9ZYvBmqQ8Q XoqSQV12pPAR+q7PheJvexHzbjwrlwHyl4F0D+aXDE8UCOHC5mYnM92dfgofPzw0MHmOeyzbq bEShTaJXew8x+1uuKQBEIej4IaED25OzQYoyhgiZcl1K5mjIROEg/BmKnIAEi8kbIKV0r8zb2 DvMk9dc0F+RzRS6GP7DPOinL7KAOYubV6D/cF+g== 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) --FaYY8vMDGhVGv2hjLAronTfEutkAnlne7 Content-Type: multipart/mixed; boundary="zP75XCMTlha3TK9SWQkFNU0wHaObP9IWy" --zP75XCMTlha3TK9SWQkFNU0wHaObP9IWy 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 I don't plan to support sector size smaller than 4K. Thanks, Qu --zP75XCMTlha3TK9SWQkFNU0wHaObP9IWy-- --FaYY8vMDGhVGv2hjLAronTfEutkAnlne7 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl9gkn4ACgkQwj2R86El /qh+9Af/XTZNHZiprSOR/yDuNjT3fdkKyph6108dCa5ZqEGlrPNdTYvM3IT0WEUl JIrcCT/4g2VS/ZwSecunZmSW3+YzN3iyLm9dETvkoGUYPlEJGM7nV11ZSrfGsfTo 2vdNYdnBmxj1S/rBNlLa/tWP8ndQAEakSY4cWOnCARpSekIZ65+3WWs/TwzWG/ss ZDo8rLLB6xPS2g2zw3LeVsnKkoQP2Z4M7vyOVQxQfH7MlGE9WpYSJbYQJqSOVGc/ sl6Fj6xanyqY50L2H59AZn4LaAf8xGWIqveJV60veFm2zW9zxE3ZuBNPKDUmaCRW 7U6cNoAjiauknC1z0OjwKZ8JTSoNbA== =qxO5 -----END PGP SIGNATURE----- --FaYY8vMDGhVGv2hjLAronTfEutkAnlne7--