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=-2.3 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 F0428C433E0 for ; Fri, 19 Feb 2021 23:15:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEAC864ECA for ; Fri, 19 Feb 2021 23:15:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229720AbhBSXPI (ORCPT ); Fri, 19 Feb 2021 18:15:08 -0500 Received: from mout.gmx.net ([212.227.17.22]:48319 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229658AbhBSXPE (ORCPT ); Fri, 19 Feb 2021 18:15:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1613776403; bh=wvOPCiWgMDf9jsq9HINytbUHTX7GkfmeagtAJ1eEuQM=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=DOOuFFdoV0iuxagpeMceFJgQjw9wVBOkBj8sZaws5AMsHDLCE4lsz13u9HX+KSzPU cdTDAXUZ4e6TODofwe7VPQ0ugEzA42n6GnbejkHmUQfoNo/aT6v230yrDKd50US/VI MJHNljCt/GABQczmPp15HzHqvwUKXAAto7BQCP1U= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.net (mrgmx105 [212.227.17.174]) with ESMTPSA (Nemesis) id 1N3siG-1lvLEo3hYG-00zpC2; Sat, 20 Feb 2021 00:13:23 +0100 Subject: Re: page->index limitation on 32bit system? To: Matthew Wilcox , Erik Jensen Cc: Linux FS Devel , "linux-btrfs@vger.kernel.org" References: <1783f16d-7a28-80e6-4c32-fdf19b705ed0@gmx.com> <20210218121503.GQ2858050@casper.infradead.org> <927c018f-c951-c44c-698b-cb76d15d67bb@rkjnsn.net> <20210219142201.GU2858050@casper.infradead.org> <20210219175108.GV2858050@casper.infradead.org> From: Qu Wenruo Message-ID: <9ff87076-17c5-ba44-a7f4-2af31fe02144@gmx.com> Date: Sat, 20 Feb 2021 07:13:18 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210219175108.GV2858050@casper.infradead.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:WV44KSsJ7Wt9CoZUdXtvY1R6ez0igeuYoGDtmZKh8X9Ob89sBGP 4hY0U7Z1PkjrEOuXVQsXS9MxHiOd8I1gCyB+MAoAdKrHlKCLVlnNCzZptTztiz7bJVSu1V2 6/a1S77yC2R2SAdc1LR/C7gSUHadyQbJhi6aipm/+lopIxV/kWCIQ/LBXgvvB/CAAe4UuNT 5QvZRM3kMc9svW/8J3Gzg== X-UI-Out-Filterresults: notjunk:1;V03:K0:hoKzQm078YM=:N25V4QBnN9dgRJ8OnBT7ri oDdV97nGUhSWZvvrYltsiL+r3LFKrm5GiKjfTVkyoN45+KLJemVZLABfmxFW29X5GuiDDyixU x9fk7nt1pfa5nZWznKnPmlwH97RYb9Z9uW1G6ojRFVIfyoe/7QXCSmwTMT69DQv1luBwBCmE+ RQpyAZNuJ4c4BLv+R6Qm7tEqG41ExO2MDPigmxLXTm5edxpEL6hnZ+0S7f/UgPL0Za3KBqVhe 501WqxtOCosIP7QIbwWQwmPb6ZIHaFNZH36p6+wU1A91kTrE0lR74HVA3PO6++x/IItJl/VIB 4o24RgSbaHJ0VrrxbR29PLrwkLE92KUKnM28p+jG2DHddY8QE00JaYFjHw3Zw5lBeNRHrPkf7 ubrYDHz7UjyVt61sKp/ZYFd/gspJ+cplEIYs4NRE5hd+cEyC1dFZElJUeRP2vlJ37aYsgZkWv UXiRg1uOyrxXvAOEYSQi0bWl9mP/NzJrEmWqFoPNwYUBtBwj6r8mOgqfEFwCntMOc88PwJFv8 RyKHRsefcZdXzsZYof+KYzR122eL+M+4IjlBrYfurki/J0UaFqAvil20KQmCbYEptMRUUhVf4 slvxyuW2IKPKqgjxAtQLLILE2550YcvVc7dBTWoWyL9TIS96dd+wQ1zdalSa4fDzjMycc/m97 BYbio9jvk8kwjLv7t639qw8tO9J0+jQfqGntpB7VW5rgjKQcp9PiIEHVsrDhs3jHCZlGfmjJx TQTGO+rpHDVn/1To1vRiOUqH9ctVH1MiTdyT1Su5Fyx0Tly7Cy5WIXFVgMLhaxGyhtf66r4rB br0OcwfnTtxznewm5Yd7R2/uQhltWvf8IH/E+ibnFe4EaJcgSUu5JpEIa5hy9nunIAv3CpLBI PsZBHqdKllLt19OkZJCA== Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2021/2/20 =E4=B8=8A=E5=8D=881:51, Matthew Wilcox wrote: > On Fri, Feb 19, 2021 at 02:22:01PM +0000, Matthew Wilcox wrote: >> In the last decade, nobody's tried to fix it in mainline that I know of= . >> As I said, some vendors have tried to fix it in their NAS products, >> but I don't know where to find that patch any more. > > Arnd found it for me. > > https://sourceforge.net/projects/dsgpl/files/Synology%20NAS%20GPL%20Sour= ce/25426branch/alpine-source/linux-3.10.x-bsp.txz/download > > They've done a perfect job of making the source available while making i= t > utterly dreadful to extract anything useful from. > > 16084 files changed, 1322769 insertions(+), 285257 deletions(-) Wow, I thought RedHat was the only open-source vendor that tries to send out a super big patch to make life of every other guys miserable. And I'm definitely wrong now. > > It's full of gratuitous whitespace changes to files that definitely > aren't used (arch/alpha? really?) and they've stripped out a lot of > comments that they didn't need to touch. > > Forward porting a patch from 10 years ago wouldn't be easy, even if > they hadn't tried very hard to obfuscate their patch. I don't think > this will be a fruitful line of inquiry. > Yeah, I believe it's not worthy now. I'll make btrfs to try its best to reject the fs instead. Thanks, Qu