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=-2.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 334D2C3A5A0 for ; Tue, 20 Aug 2019 00:35:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDC5F206DF for ; Tue, 20 Aug 2019 00:35:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="FZuarS2v" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728704AbfHTAfC (ORCPT ); Mon, 19 Aug 2019 20:35:02 -0400 Received: from mout.gmx.net ([212.227.15.19]:49625 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728627AbfHTAfB (ORCPT ); Mon, 19 Aug 2019 20:35:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1566261293; bh=75WNHt2fs1ncZwdsKLpuPx5GCJSxAOh1H4N/qiCHlic=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=FZuarS2vkoPDEBj5WEE9+3MHwPTdudmRuC/aeSJVEg73EBnVon4GKQMCKSffCz3du gTRmRwHzKjsNVsiJhjqZqZ3hJ740vXXq2JMZNhucvUooZVeJ60muF6DFz2HzW5TADn Txmg196teYL02+JfI4fitdhtqzRL/34H3Ywc6hXs= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([54.250.245.166]) by mail.gmx.com (mrgmx001 [212.227.17.184]) with ESMTPSA (Nemesis) id 0LyVIk-1iMY1a3z0Q-015naX; Tue, 20 Aug 2019 02:34:53 +0200 Subject: Re: [PATCH v2] btrfs: transaction: Commit transaction more frequently for BPF To: dsterba@suse.cz, Filipe Manana , Qu Wenruo , linux-btrfs References: <20190815080404.20600-1-wqu@suse.com> <54b0adec-ce06-90f0-e0e1-8ecd7e5b4915@gmx.com> <20190819165713.GK24086@twin.jikos.cz> From: Qu Wenruo Openpgp: preference=signencrypt Autocrypt: addr=quwenruo.btrfs@gmx.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190819165713.GK24086@twin.jikos.cz> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="edm7rSktmVSHyPIL8PYUxBx4t0dqsHak9" X-Provags-ID: V03:K1:6HnGoJ9cPjpZH60yUBUv4ogm4XLCNy8ecoOH9Kh07sFycayTX1m ItxpabwJAz73xFgKIDsKCjsAAcKsM+F+2wElXvSgebdDE/E6gfQ9g8UJ8MNvTK9t4eVXt56 AHA8nkOf2yrcj7wWi2jazi9iYjJWmC2CVlJ1o40ic4DjifAHD2IaXELOL+Q+eZKFqASBdBq EbUmLyFn41L4DLe4mldRw== X-UI-Out-Filterresults: notjunk:1;V03:K0:NSpraq5kXb4=:TmJWFwBVI6fv2QX+YZSJ73 cK8t8gf6rWQ0QwPJLETHc7jjObZjGVSUD8o7epiD3ZidEr21EaoZ03c7z7uLaj8pp3QlZuh35 DOaGeUZt+avIestxbgBZH2U8ekAiVXQAvyMHui7fLgY5Fah9X919g9GC79cSO39gMk2LQnFWQ qF0Wz16x2UxsIckewbsVGDcqf1jogkdb9qEb770thzAQuFFfIms/F087hmU/eSYhaVTS2bLcn UaFQLC8N9e5rJyo9qRqrnS4x8VRChaU4WhcYIQcD9oor8kLswAdMrn9V4GNUYdb/Dj7Na79YL 2lwCoTlPw0RhFjb7Un1dDBJls9Qdo6gYTv4KeHA9W753+UPYI0BkQ3p7KTKFIsMgFeY1lNUo+ CwVSZjuty/nXd08GpUNdHX+ZSNSpGQUusrgo2IqkIB7JECAbtpjfCaIkqQ7+IoVEfH+0OwC0E RwmyQHIMA1EX6UMAXJO9Bna2fRuTVxmXiRUo6NWXqL+hydAUaFxZ8lrDAeJxI8TrzuRF0n8XU xcefU4FFnrHrBrmO59ojO3jkGwE69hjzXBQNwGW9ENXc+d0bOLl19Pqps1XTywU4W4ljR5OI5 J8I1pGv8hW5mpieyci9SiP1/g19ecaKryO8LZHDJeQPBrB0Eg8+cFF/Jz2CEQEkueAltF/KbP YPbyftWAKXmAiIZ8/SRrxbKi5mxlP5y1Ftu7hkmfHRt9ynb4Wc5bvYFCQRlkTZPN7OVwDmVVa yvpSjVTzMTRC3opZd/g6lOG8iQnR1FgktQcezMk5xI8FghYi/eK9k8f+YBBMj6dW6S9470wmc Qa32ubQzqixDlFvwimjNmjeZ6o/f8XszjOn8SqmSrh6CsVQs/s9gq6eIgPlOFPSpV15XJlger DbGLzGgLguBohyBp3Un3ge+yhkWAh0pw88V0E0PNsomcDK+DY3RuQzvCXMbsHhOznl5vZB2aL dsTccFsU74XixtZjySIsLRzAEbb6YhgmTuhkGrUaQ2EclMtom+O6iLhxutj/uERjeF5xuUq3V 5kNy7Iie87y4RAsMDL1sYVKqK9YhGO5+iavRX9Nf/jrtMep0IpXh8EccdEok0B3gnK94igUXh omOvxvPv9DOjpy+fIDsQmHpPwrBqjv6WoPxvwluS6DH+LvLQiytqL1CTQ== 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) --edm7rSktmVSHyPIL8PYUxBx4t0dqsHak9 Content-Type: multipart/mixed; boundary="kOXQf3pfEhQWsBZXRyG4DUU9T45H9kYwb"; protected-headers="v1" From: Qu Wenruo To: dsterba@suse.cz, Filipe Manana , Qu Wenruo , linux-btrfs Message-ID: <4547cf77-15d0-a1fd-29ca-77275619450d@gmx.com> Subject: Re: [PATCH v2] btrfs: transaction: Commit transaction more frequently for BPF References: <20190815080404.20600-1-wqu@suse.com> <54b0adec-ce06-90f0-e0e1-8ecd7e5b4915@gmx.com> <20190819165713.GK24086@twin.jikos.cz> In-Reply-To: <20190819165713.GK24086@twin.jikos.cz> --kOXQf3pfEhQWsBZXRyG4DUU9T45H9kYwb Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2019/8/20 =E4=B8=8A=E5=8D=8812:57, David Sterba wrote: > On Fri, Aug 16, 2019 at 11:03:33AM +0100, Filipe Manana wrote: >>> Originally planned to use this feature to catch the exact update, but= >>> the problem is, with this pressure, we need an extra ioctl to wait th= e >>> full subvolume drop to finish. >> >> That, the ioctl to wait (or better, poll) for subvolume removal to >> complete (either all subvolumes or just a specific one), would be >> useful. >=20 > The polling for subvolume drop is implemented using the SEARCH_TREE > ioctl and provided as 'btrfs subvolume sync' command. Is there > something that this approach does not provide and would need a new > ioctl? >=20 That interface is good enough for my use case already. Thanks, Qu --kOXQf3pfEhQWsBZXRyG4DUU9T45H9kYwb-- --edm7rSktmVSHyPIL8PYUxBx4t0dqsHak9 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl1bQCcACgkQwj2R86El /qiBgwf/dPKZ0aL/i3jTq3PGEtC8bLqXS4DxD9R1PMGOEJOGwV6XbqusGYsPVZBu QaM8mQHReM4ZbAXTRbL7nDSs/ZEHUY9Q+bT/GfiEcqRT2fWPdRny1YwLb76CC3Ln iMGk9Q7SvRm3ryz/pgZCK6VouvRM2VP8JhIxRfUo8GFWqCPStQWZuia2uGaUfSQE FGnt2W9AUj8lkyGdH4CAOXPoao0hFQHNO+89X+BnifTpMCbttino+oxK12O4gU7/ dN6XiojaOvAwEtPAhK/+5bXYIcXRe0SaclrO29A4K43fph//nCulU7p4mPrtkHxO Dpmme8qoiXoFhdwh8fMEFNaUroiBtA== =6wvd -----END PGP SIGNATURE----- --edm7rSktmVSHyPIL8PYUxBx4t0dqsHak9--