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=-12.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 4A94CC6369E for ; Thu, 3 Dec 2020 01:49:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0D09206F9 for ; Thu, 3 Dec 2020 01:49:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726985AbgLCBtk (ORCPT ); Wed, 2 Dec 2020 20:49:40 -0500 Received: from mout.gmx.net ([212.227.15.19]:42093 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726597AbgLCBtk (ORCPT ); Wed, 2 Dec 2020 20:49:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1606960084; bh=b8t2O1gIHQGu76IfoBxLB3P95KG6nOpYatlKfE22eKo=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=Tj0EX+poHBbKPnF9bZAbV2UU9upS00/4/qu3EKuy2qygiOYeaVobjyIqQizSs1Kvp 9S2M5Zi/h0b5AkLiEmLyGSTZiOvxki9qbLHUQ7WI9Yw7XoTMJTWxZpTcJ2Rr03Uyht PFc9TPIYDRLVrYhQUmscg6ok+MuxMvi9FYz2aR5Q= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [0.0.0.0] ([149.28.201.231]) by mail.gmx.com (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MBUmD-1ktCyy2EjX-00Cw4p; Thu, 03 Dec 2020 02:48:04 +0100 Subject: Re: [PATCH v3 02/54] btrfs: allow error injection for btrfs_search_slot and btrfs_cow_block To: Josef Bacik , linux-btrfs@vger.kernel.org, kernel-team@fb.com References: 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: <9c81cc8d-6bdc-7e28-3a2a-5669a994eb5c@gmx.com> Date: Thu, 3 Dec 2020 09:48:00 +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="Ygp0PJ5A40h0AvfbHNPszCFo0So6EMP6P" X-Provags-ID: V03:K1:qC8QzVpIgfNDhLh1i/gu0rbVGCPcwbTJRAuHrPTWv2VPxB7eGZo 7WrOATxMbLn1WO/yr1nTzBnxKRjNWywAMCjAS7LBfPPbg7CUpg3Xu+AKlo75XRIWXGgJsyS X4aarJll1slmfSb1ythzeWfnKZgfSsYQISkYj7QYozFW0seUOvO4VPab/y+UafOI9b8/9dV n7Ke00ntwmGBl5sUg+BZQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:KeHrmkNIgfI=:QNdxo+3BCNwq67n8XKRAFq T8NeY/iDhscs4xBu1AcA78L/Rh6cJtNjcBbW5LrmkJnzAS2n8ur1QvF7gQAkKwawZZ5IQzcaa bEXrWyx1ItP+w7SFg/aDou61D9zywC5oV/CeEJai0h6tOxM2du6cn0b7aBbIp44+6Xb5VhnXm D2oQurfQgvsTN6jReoYMyIwA3ciXi9MPoXIeJHUUGJO2+5VWHXCewHZp3zntPMRyZb5NCmRTy XOD6q+qFFQF1u5gK2GEJxGkfQm3yEojc/hfOlbBApPjsAfrv3LQgIOTohDBzgQs4YiraI2TXq OgXef2PWzH8IS4bJ+nj0n23kNScEH490u4H9dzdu0SsOqf5pI60ujOgU7vXfTT1uHOE6tW2JW gqGk1QPZWdEWf2s6iqhjMG2o03emYUN6VXL7SeJCAvEMcuQNxJ40SPrBIeVtWnYSZFYQ4W9zI KE2Vzm2u8lEfQyiALq3/kUqn4q6nBAS0rzPirRw6jBRGwT+/3BWss81Et+wGas7q2djOwMFPM 4U9n7nsgnUPIvrtnJtEN4JFmnpNJibnD9qRkEb5s2aoZdhyGxR2VqD9NJ6L8SseaS4V9/+5V7 KnYrGghzCdMKh5nw/9f+mC0NH+fC5TS9MnJ1ATWrZG+2DApJCO3yhibPfYvGKzavoh3jUMdpP 3xm7OW/BR6L7PQsp8ddzjCPWxfoteRzmUKKi0yJD1KV7efx6etEmuHLM+kLSzVk+hbEX58QkY ZsilM4AE5+dKTHEJk+UqdTem379aHGCCNdBqyXgS17IJdjRMulEXc8BGF1ZJHJfq2+/CSA2Fi MT6fwVvvgIVmsZ+CZWsYAufSRUPEqQMnHMYpqtlcNK3fyl2k9ojKbchSUy2niXi1nQwt2NwzD Wmb7eWV+H/SR8wnwjz3Q== Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ygp0PJ5A40h0AvfbHNPszCFo0So6EMP6P Content-Type: multipart/mixed; boundary="wZnuXb6TGYYFdg7VRoPNRROYI2zR4nW4M" --wZnuXb6TGYYFdg7VRoPNRROYI2zR4nW4M Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2020/12/3 =E4=B8=8A=E5=8D=883:50, Josef Bacik wrote: > The following patches are going to address error handling in relocation= , > in order to test those patches I need to be able to inject errors in > btrfs_search_slot and btrfs_cow_block, as we call both of these pretty > often in different cases during relocation. >=20 > Signed-off-by: Josef Bacik Reviewed-by: Qu Wenruo Thanks, Qu > --- > fs/btrfs/ctree.c | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c > index e5a0941c4bde..f40d3a2590a5 100644 > --- a/fs/btrfs/ctree.c > +++ b/fs/btrfs/ctree.c > @@ -1494,6 +1494,7 @@ noinline int btrfs_cow_block(struct btrfs_trans_h= andle *trans, > =20 > return ret; > } > +ALLOW_ERROR_INJECTION(btrfs_cow_block, ERRNO); > =20 > /* > * helper function for defrag to decide if two blocks pointed to by a > @@ -2800,6 +2801,7 @@ int btrfs_search_slot(struct btrfs_trans_handle *= trans, struct btrfs_root *root, > btrfs_release_path(p); > return ret; > } > +ALLOW_ERROR_INJECTION(btrfs_search_slot, ERRNO); > =20 > /* > * Like btrfs_search_slot, this looks for a key in the given tree. It = uses the >=20 --wZnuXb6TGYYFdg7VRoPNRROYI2zR4nW4M-- --Ygp0PJ5A40h0AvfbHNPszCFo0So6EMP6P Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEELd9y5aWlW6idqkLhwj2R86El/qgFAl/IQ9AACgkQwj2R86El /qgF+Af9GymRPdoaMzIypvk9i+hoveFI0Wvs+OSH1BeiPLOXA+X8yAQStlDriMph bQSPfRZxI8EZZFNSZkcos9hAJ5wtQqyOmwxXQLE4OmkUx9+nLfIFjVRLuyREyeAA Gc9ZPg7k6XAHCWd3quI3diZMA7zFWot3uFkxqVMPgYkCs6RtpB/+bMpandxNv5w8 3D5lOXSh4WcTEqhXiMuamGot87RrvC0oN8fZcF6oBiKS8K5qqSvIju19wYyjM1pl tmSuimQm19jK7HuSfN9gyaMiCAUhRamsRZFhRVlilw/crp33pn5XX2+sx+bII2p+ 8HsrPySda6lUJ8RtGfToQjOsmMJdSg== =Oq5U -----END PGP SIGNATURE----- --Ygp0PJ5A40h0AvfbHNPszCFo0So6EMP6P--