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=-8.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT 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 3102AC07542 for ; Mon, 27 May 2019 07:55:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F19C12070D for ; Mon, 27 May 2019 07:55:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="mk7OYxTY"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="PcjSgTSM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726213AbfE0Hz0 (ORCPT ); Mon, 27 May 2019 03:55:26 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:38894 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725943AbfE0Hz0 (ORCPT ); Mon, 27 May 2019 03:55:26 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 06C3F60A00; Mon, 27 May 2019 07:55:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1558943725; bh=TLgwZBRAFLM5rcutPPk68tE3qitbgmeVGUN16gHE3Cs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mk7OYxTYrzuAlHczolCGNOP0ozkYjB4Lndk2r9uSDfuBsgeDr+2wpsxn4uCsctyX7 EJpWL+vAnEzfFDR2P9373hVhVdYUu8XfJOO1qGlpNG/BswI2osGv8xUt2oWAB08SUd Ep8qYXptz08qXSI9C0p0EJJiZyjDKUmUYGOInrto= Received: from codeaurora.org (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: stummala@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3B58B6086B; Mon, 27 May 2019 07:55:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1558943724; bh=TLgwZBRAFLM5rcutPPk68tE3qitbgmeVGUN16gHE3Cs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PcjSgTSMk6k0NRJHID31m2lCvEYJp4utLdfT/RB2lkk+4R8xyEppv9Ykv3wd4Lz72 S11iKnrKuQWXlDXA6yd8KLsBZf3Z+v/53AXt/awuinTgFTCb5phAN64zBOPsAqdwzC XfMXAVYWqVssBxgLAMyUXI7En8MKyBNY3ayQiHcw= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3B58B6086B Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=stummala@codeaurora.org Date: Mon, 27 May 2019 13:25:18 +0530 From: Sahitya Tummala To: Chao Yu , Yunlei He Cc: Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [f2fs-dev] [PATCH] f2fs: add errors=panic mount option Message-ID: <20190527075518.GD10043@codeaurora.org> References: <1558694631-12481-1-git-send-email-stummala@codeaurora.org> <6a4ce8cb-d9ec-1923-8304-6b8956283e85@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6a4ce8cb-d9ec-1923-8304-6b8956283e85@kernel.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 24, 2019 at 08:13:50PM +0800, Chao Yu wrote: > On 2019-5-24 18:43, Sahitya Tummala wrote: > > Add errors=panic mount option for debugging purpose. It can be > > set dynamically when the config option CONFIG_F2FS_CHECK_FS > > is not enabled. > > Sahitya, > > I remember Yunlei has a similar patch for this, could you rebase your code on > that patch, if Yunlei agrees, we can add Signed-off of him. > Hi Chao, Sure, I can combine both the patches as they are providing different functionalities with the same mount option. Hi Yunlei, Are you okay with this merging? Please confirm. If yes, then I will make it into one patch and add your signed-off. Thanks, > FYI > > https://sourceforge.net/p/linux-f2fs/mailman/linux-f2fs-devel/thread/f6a0b1c3-4057-8b64-a419-4b2914d48394%40kernel.org/#msg36376331 > > Thanks, > > > > > Signed-off-by: Sahitya Tummala > > --- > > fs/f2fs/f2fs.h | 9 +++++++-- > > fs/f2fs/super.c | 21 +++++++++++++++++++++ > > 2 files changed, 28 insertions(+), 2 deletions(-) > > > > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h > > index 9b3d997..95adedb 100644 > > --- a/fs/f2fs/f2fs.h > > +++ b/fs/f2fs/f2fs.h > > @@ -32,8 +32,12 @@ > > #define f2fs_bug_on(sbi, condition) \ > > do { \ > > if (unlikely(condition)) { \ > > - WARN_ON(1); \ > > - set_sbi_flag(sbi, SBI_NEED_FSCK); \ > > + if (test_opt(sbi, ERRORS_PANIC)) { \ > > + BUG_ON(condition); \ > > + } else { \ > > + WARN_ON(1); \ > > + set_sbi_flag(sbi, SBI_NEED_FSCK); \ > > + } \ > > } \ > > } while (0) > > #endif > > @@ -99,6 +103,7 @@ struct f2fs_fault_info { > > #define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000 > > #define F2FS_MOUNT_RESERVE_ROOT 0x01000000 > > #define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000 > > +#define F2FS_MOUNT_ERRORS_PANIC 0x04000000 > > > > #define F2FS_OPTION(sbi) ((sbi)->mount_opt) > > #define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option) > > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c > > index 912e261..7d6d96a 100644 > > --- a/fs/f2fs/super.c > > +++ b/fs/f2fs/super.c > > @@ -137,6 +137,7 @@ enum { > > Opt_fsync, > > Opt_test_dummy_encryption, > > Opt_checkpoint, > > + Opt_errors, > > Opt_err, > > }; > > > > @@ -196,6 +197,7 @@ enum { > > {Opt_fsync, "fsync_mode=%s"}, > > {Opt_test_dummy_encryption, "test_dummy_encryption"}, > > {Opt_checkpoint, "checkpoint=%s"}, > > + {Opt_errors, "errors=%s"}, > > {Opt_err, NULL}, > > }; > > > > @@ -788,6 +790,23 @@ static int parse_options(struct super_block *sb, char *options) > > } > > kvfree(name); > > break; > > + case Opt_errors: > > +#ifndef CONFIG_F2FS_CHECK_FS > > + name = match_strdup(&args[0]); > > + if (!name) > > + return -ENOMEM; > > + > > + if (strlen(name) == 5 && !strncmp(name, "panic", 5)) { > > + set_opt(sbi, ERRORS_PANIC); > > + } else { > > + kvfree(name); > > + return -EINVAL; > > + } > > + kvfree(name); > > + f2fs_msg(sb, KERN_INFO, > > + "debug mode errors=panic enabled\n"); > > +#endif > > + break; > > default: > > f2fs_msg(sb, KERN_ERR, > > "Unrecognized mount option \"%s\" or missing value", > > @@ -1417,6 +1436,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) > > seq_printf(seq, ",fsync_mode=%s", "strict"); > > else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER) > > seq_printf(seq, ",fsync_mode=%s", "nobarrier"); > > + if (test_opt(sbi, ERRORS_PANIC)) > > + seq_printf(seq, ",errors=%s", "panic"); > > return 0; > > } > > > > -- -- Sent by a consultant of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.