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=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 9F7C0C352A3 for ; Fri, 14 Feb 2020 00:34:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EB8620873 for ; Fri, 14 Feb 2020 00:34:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="A1drdmZV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728061AbgBNAeB (ORCPT ); Thu, 13 Feb 2020 19:34:01 -0500 Received: from mout.gmx.net ([212.227.17.22]:37843 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727594AbgBNAeB (ORCPT ); Thu, 13 Feb 2020 19:34:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1581640434; bh=ctXtAmjNT9IHSPWwaQ8BmvfkRRJhNshYPJQVxoMT+ns=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=A1drdmZVbHUZIcq/lQuCIeYQPSX1goPr94rDJ/P0P4VkaLx2IPkh0wEA5KVXylZHA wLGPJ/ITPaFcnvnoQVDhh7WoYvLRTGi0NE+u/Un+Yx7y2sClSVGIyte6LoBiJM4UPh XdZfTZA7L4DvjbzIvGepqDmgOH00YlEdVwyvgOPQ= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx105 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MN5eX-1ijMbn0eqD-00J3XN; Fri, 14 Feb 2020 01:33:54 +0100 Subject: Re: [PATCH v2 4/4] btrfs: relocation: Work around dead relocation stage loop To: Josef Bacik , Qu Wenruo , linux-btrfs@vger.kernel.org References: <20200211053729.20807-1-wqu@suse.com> <20200211053729.20807-5-wqu@suse.com> <75628279-595e-2ab7-b808-18ce0251f5b0@toxicpanda.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: <0e5ed1d7-1ed7-3a48-6620-548bf35ff773@gmx.com> Date: Fri, 14 Feb 2020 08:33:50 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 In-Reply-To: <75628279-595e-2ab7-b808-18ce0251f5b0@toxicpanda.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ZK23ltztw7lE5uwXw21g9CYREThgElUjQ" X-Provags-ID: V03:K1:qfJhrMc2ydMtxndGRFS+HiH7lJCvP3Oe70DblJBUecuCISGhBAI KXCSA8Ss+L0G4QyehQVtWKhIdaKPjQFgefUm2yGmE4Z7SB2Hx9KI7TzmnIdxLYtAZJ90Xwd 4HODBxoZD3/K6C9tTg3B5DtjsZSNN94jm8bV5zS5MHNZyl8e/6bmJcElH8WcyY3BezAR2cD p/UVMVBFZzapMPGX4uvpQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:K0+EyKUmWDc=:RRDFBs/7WFTovDCpaI8k8e PX6atAzSgFOAlmnjCMAO7CmpB+HWNtUwItPMIexYJi4Jx2lakKcYa3/QyePwYFE4tmYTMZnOf oYhgPgE35sq1YwUe9dMC0kgwwNb+AG7JKDx7X3DQAUr38bgZAU6iRQklQi67cdECyVEjfY0H1 wwQwJHD6YUjALLNa4yeewqE9lvQ9lIvGbet0v0XhulqwIgnUn3ZLDTv7+XG6JyiD0bvSrGEPF nbtTeAvUIp5VtpiytcziB14qKpbbeQu4OqWsBvCjnZo2cWSdM7VxYNeQNmotOsb0Bj8dTu8pd Ie8SWe9WK8BGKJmhoayUMcaQwzOt7fkcMKCm2VcjgWW2pgPp8ey/f+nYAVW4BLRTYapdX029S kQIui1aj1y7vRbgHgc3W9Jow+GA7hnXBHmVuF/EUQRN0IlWbZhy2g4FMejcFDGiDxJIIh6ZOl /WGYzkGXIOGA3f3qt21oIEKQHpeotl+G5wSrCPc5ZIRs3IrMLwKno8a6s7MsPG3ZRhEp72HHD RCzDmpx19rV+prHkmwKaVGUC8fROEEFXVZddp8c1//eTXUKaed3/+2XYZCj1L/xf67iASE43r xojKx1evY282U45eUJ0MFS2w+hlKNmfXsy81vnolGe8ehLDxLbXBMJ+5usC3b3+6lLb1RoRA+ 3TPloJrpYVtT05x0QaMV9BE/v+nx90xfFiejc5PXG6mxt3SzCZn/Nt9z4DSFwOk2iNRaAFhsY nNok+1YAo/l8+WHc2hBxW2RVk+PjF74fkSP3c2sDmcMsEViXNYgwUs2M8VPc/3hrExSvLOz2T snGy+UvPFc4CJUDBRRz8CQPGoMREXpv3zkg9WGs2dAf2xeongVqFzy/F2zplhckEDwhVBEH3e /I2jj4f3/PbCTsCLCE+BjVPg726Fga8QSdOfnCkk6+HySQnmWRih8NWIKDOcaAjBFGL3litWk qRJS7bbEKF6I/2760R4l+Wo45Dh32wA7N4bvfVHJnzITV/QE11li+nW35iOoyBXokAYz87gAz nh8DXMjqOSwfLxcTQsJ1okZT31TnArvouyMq2hk5jnnc+iFI2UvuLSuFQeCflKVa4TGnplbIH bkCis0S/SOls73yf+qMnkz0qxyR+mHHYhq634g0LyzgV8Sd875G7+eUDdrWjE+08QBmis+SAz iuwQTgf0uaXSpZqPvv7WA7NRHxjSVcx8NgfoEeUOCoCY7va6/lKdvOFkxnq63/kmaUoS6e3oD Yz/le3i/tw+HN+ON0 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) --ZK23ltztw7lE5uwXw21g9CYREThgElUjQ Content-Type: multipart/mixed; boundary="mzvB0AweGo0Ml0y2PqsWrAFy0CUT6kMkO" --mzvB0AweGo0Ml0y2PqsWrAFy0CUT6kMkO Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2020/2/14 =E4=B8=8A=E5=8D=884:08, Josef Bacik wrote: > On 2/11/20 12:37 AM, Qu Wenruo wrote: >> There are some reports of dead relocation stage loop, where dmesg is >> flooded by "Found X extents". >> >> The root cause of it is still uncertain, but we can work around such b= ug >> by checking cancelling request so user can at least cancel such dead >> loop. >> >> Signed-off-by: Qu Wenruo >> --- >=20 > Why?=C2=A0 It'll get picked up by one of the other cancel checks right?= =C2=A0 I'd > rather know why things are going wrong than put something in for a just= > in case scenario, especially since the other cancel points actually mak= e > sense and will accomplish the same goal.=C2=A0 Thanks, Yes, you're right. Please discard this one, as there aren't that many reports allowing us to investigate it further. Thanks, Qu >=20 > Josef --mzvB0AweGo0Ml0y2PqsWrAFy0CUT6kMkO-- --ZK23ltztw7lE5uwXw21g9CYREThgElUjQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl5F6u4ACgkQwj2R86El /qgpJwgArR9zZayzxF9Bq0B/1nhx2Vb+4EkOdn61J1mGTuUC/ApY9kifa0XychvI Y3UQEPkg8iu50+QbdR1VwJUaO2JkrOMdY/Wxopa1lm+lrkaeqaMUoVSq4+Syy/Ay RyJtN0IaRf0OhOJhxY7IsY2ZJlxSfOz0eulGvCX6wotMRtkr2USgK7lL47tMxM5z czmdK+UvKvs+bhsQFsx52hr0RDFIqF66YJEGmMv3lFa58NApZ4wBue2WBfxWR8aE x9yo/+Tqq3/t0stlyPtvdcDIpzF5DaUT8ovrT3iaBwVOXfnsXwzMreDOgE+usKSr 7D3KslUCj8MnFIOC6PXsmJQ3vznFpw== =hA9b -----END PGP SIGNATURE----- --ZK23ltztw7lE5uwXw21g9CYREThgElUjQ--