From nobody Thu Sep 11 14:16:32 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9132C761A6 for ; Thu, 30 Mar 2023 15:27:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232979AbjC3P1o (ORCPT ); Thu, 30 Mar 2023 11:27:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232848AbjC3P12 (ORCPT ); Thu, 30 Mar 2023 11:27:28 -0400 Received: from APC01-SG2-obe.outbound.protection.outlook.com (mail-sgaapc01on2092.outbound.protection.outlook.com [40.107.215.92]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25D61E1B7 for ; Thu, 30 Mar 2023 08:26:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HSYapoPeMXlz8py87SaIwwziyi62n+h1KV6LASJlklml9UKujnQvDP1i44Q/lgB7goBo/XCfOarHzNmFlMCeP2IeorDq4vxBd72qQUCBE/ObYUm0QFPfEmLKly6bj7mnqhGBBQnkLZXCmiRRz7lyxlVliZP3EMDmWLjTgHfX+As/+azsjDOEimwQGwhPCYeDivg4hVa1qBzSy6KttEihZxxqX1Npd+h3aDwHcKGhDqP6jKTKTZ+/XbYKBR3qg5TQyEifWu6KJXO5IhXPJxSfa1MwrRmYAhtW3MUnlonDzl4SN7pScUxSTksHzfWxVwSSEsizejAIMSOgJohNsIoceA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=l6UOYNrhS/ATqFSBARfWj7xnbFE94bckjujkFNerpdk=; b=E9TO2WxVO0SQvaVHqoIeYFGMYoR650C/t3k2odM4Ja6sNvjwW99CWGnEUccBOx0d9P4eqG0ty0Y9rkfs9Ip9MsdqV1eFUYmv/MNGOcnbv/xkGT0GTIq2oksuVYoLdvoqNtzC8WaVDeU61gOAFvV2zLxnShoqWeyGgp9U9ZnwmPG5S8n6+0G2FDu/a1Ta/Up1rOiwxgtyOAYsPHl8AMx1jJRVkej6VXX95Ds/+aSLW2k/2Ttoo4YGJuCx9RC9JUU9sdskFo4GEsQ2C07FFkh2Cc4Q1tQTb+l83TMLGzBSoZUtEKLH3F90V/Kt8vKk+LcND/P1cvuMPgihfzWifEmhpg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=vivo.com; dmarc=pass action=none header.from=vivo.com; dkim=pass header.d=vivo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vivo.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=l6UOYNrhS/ATqFSBARfWj7xnbFE94bckjujkFNerpdk=; b=UqSxE16jsg01KRK19MSGhC/UM3RoinsQvhkmu8YSCKBsz7l1vPABkRbMTFO1lpV83dEJZFGms2mg3k+QbmfT/Krz5OWKlb/N9Ft9/tBjJfYn1QODKfpMdEcOFm5EsGoAob6MCxLT1gEU3QNvMpAIg15Zlgd+Sw3rqkXNnk4zqsmS56hMY2HmQWqZ+I/z1XeRhE3ggoPooquCyQCY4s0MfUs3bojOboFWOAq9zSvqkSqNeX9KlUkh8UcK3sDgp6IzEFlmL3im/HWV8Ce/LbXW0Bo+hnzqwnN2GVCRr19GsD1OH09xIOEsaRk89KJW0nkSb6oxGco/ybsXoLp0DI3A/A== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=vivo.com; Received: from SEZPR06MB5269.apcprd06.prod.outlook.com (2603:1096:101:78::6) by SI2PR06MB4393.apcprd06.prod.outlook.com (2603:1096:4:155::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6254.20; Thu, 30 Mar 2023 15:25:21 +0000 Received: from SEZPR06MB5269.apcprd06.prod.outlook.com ([fe80::a3a1:af8e:be1e:437c]) by SEZPR06MB5269.apcprd06.prod.outlook.com ([fe80::a3a1:af8e:be1e:437c%6]) with mapi id 15.20.6222.033; Thu, 30 Mar 2023 15:25:21 +0000 From: Yangtao Li To: jaegeuk@kernel.org, chao@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Yangtao Li Subject: [PATCH v2] f2fs: support fault injection for f2fs_down_write_trylock() Date: Thu, 30 Mar 2023 23:25:10 +0800 Message-Id: <20230330152510.81886-1-frank.li@vivo.com> X-Mailer: git-send-email 2.35.1 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SG3P274CA0015.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:be::27) To SEZPR06MB5269.apcprd06.prod.outlook.com (2603:1096:101:78::6) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SEZPR06MB5269:EE_|SI2PR06MB4393:EE_ X-MS-Office365-Filtering-Correlation-Id: ae098078-7bea-4089-a34a-08db3132f9c4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SEZPR06MB5269.apcprd06.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(376002)(39860400002)(136003)(366004)(346002)(396003)(451199021)(2906002)(8936002)(86362001)(66946007)(41300700001)(66476007)(66556008)(8676002)(4326008)(186003)(36756003)(316002)(19627235002)(6512007)(6506007)(1076003)(107886003)(26005)(83380400001)(5660300002)(52116002)(6486002)(6666004)(38350700002)(2616005)(38100700002)(478600001);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?WWl+6Nu/OeIKaDRbfJSuH8+1+TSSMh0RPc8XxNSf5Drny2YsUc5tT4bC5tGr?= =?us-ascii?Q?eVdaj+KEJI8pSGaPLxtNCgXk6JzZGjEHd4BVXyJ6vU5BCqkg9vpb+l8UzzE7?= =?us-ascii?Q?FjlIjA8VH1CJat8aFJC76+5+o+lt0+P3QKMpL805HHYGXPUlSYYaeV1G57iv?= =?us-ascii?Q?6j2uynnyHC3S+RijPoosXSRnpEmgpZYXo/WkuNjkPJ7dm4zKhxGxyEaQJb2M?= =?us-ascii?Q?EJ2Ha/bzm7Tzaynp6RJYB08NURTSY36bsk0rCnus96fanhbi0kmGIpFHpN6s?= =?us-ascii?Q?CQRuWfMFqZqsmYoOq2KGA2fxwy570RFY28vQbpYrml2DqgBeWPMvuSauh1jK?= =?us-ascii?Q?sgLkie41hC+q/o22KMQ7DbBM9VKP5NbrwnybZMMlm7AANdQKb452zlE0M2HI?= =?us-ascii?Q?A1O2TsGjGS2ulsD7MILckXgomieCp5/F9GO5bg1d/tyrWbUPAvg7HucUYAW5?= =?us-ascii?Q?0n+CAzqAOUXR7peX246rpnjzx25U4Lo3q/5vKJ6OmGCW3ghKVNqrCJzNaQ/4?= =?us-ascii?Q?5wgmvS+9BU3RDWEUpqI97fQWPK4AL63PQw2LYHmXGLyKIWHvJMIgKIgxHD4W?= =?us-ascii?Q?ehjKAoN/WwZHb1HPFy/w7Qmse2980amOuKPfiMlYYrJsURLp2BKW5sI2qcTq?= =?us-ascii?Q?99ZPP7gMgJgZF3Uib8BTRf7Nz4xmcmGzuiDwc2LiP1gocAlqZLFcnffPgNPq?= =?us-ascii?Q?HhJ2gw8xDCrOqeYGQ/SGnJotaR6/309LvSdkKrmUCG9bjz279+2PjoQB5a1W?= =?us-ascii?Q?bCHJQ8qaLkSvqiKxOBBpjVglg8m+HbK5H7llLQYbF9R92a8yqzzz/iFTGCQ2?= =?us-ascii?Q?akimf9pas3fp3QlLHds40td/mpNM/1UAe977DyfFVTPA2fwzESJqL/WHDgws?= =?us-ascii?Q?f80YnEMhNi0It19U3K3KxpCg/LHg7N8iikLYtgMPl1X6wjvDf5m9sFTTHX21?= =?us-ascii?Q?dmaobMnKecYJPYUYDx2tcVSh2ozIwSuHb9Erj6dpIXPdo985ulg9V/Fkp+ly?= =?us-ascii?Q?calX/PCXYYTxpr/uzvaRwIYidV9W549I64Ur11j5hQ6UouxOTlKkCFHZdqaC?= =?us-ascii?Q?z9Uxt6JQ+eXixnC5DM/HLEuI9asOt3Upf0t5cKlCl/xciiaH+9s27mzgBU40?= =?us-ascii?Q?8meu/EnrLqZt1m7GXOqR1EGceQR60ujnIpWCUDbEGA4CFUEzW8CE/TFVbURE?= =?us-ascii?Q?c6UojPxVUDapVThsILQikMx3Tc4WDlIvlZjQdyRMSUpv5Ts7WlOhTYuW1rmq?= =?us-ascii?Q?d+3Z5SX632hWoZjvjNWdfPAdImlpayAt4wTwM5zhL2bnxDgRyoGZNwrjd4z2?= =?us-ascii?Q?jivGhLhV82p9xL4mLBT+FId6398k4CKRMALZqT33MMfdzptXqZKvGCM14h4k?= =?us-ascii?Q?WwNNNcT/pW9wV23fzUgWow2WYshvcyC+1PtqSLjxyIVBormYJ2M05Eqvvnud?= =?us-ascii?Q?bN7l0F+0dZ8px/8i/KJs0ePyae66wvfjp69e5VWr0UzVKcH7SIl1k7Y0zUHC?= =?us-ascii?Q?oPziSqVsAkEEFFUBBuEapug0CZoKrp4kMCwBCXlYdeq8OVfEueawHs/AIH8+?= =?us-ascii?Q?TlHbHOzBrbus0aBLyYfglXZ5okkQlR73MgAeGvKb?= X-OriginatorOrg: vivo.com X-MS-Exchange-CrossTenant-Network-Message-Id: ae098078-7bea-4089-a34a-08db3132f9c4 X-MS-Exchange-CrossTenant-AuthSource: SEZPR06MB5269.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Mar 2023 15:25:21.4267 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 923e42dc-48d5-4cbe-b582-1a797a6412ed X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: lSTgMfRE5jXLyhNkxhYIo0xXdWUa4CaIEJiipOz35meOfuwcUj58bMMiAkwXmilZVxnL3bZvzhtwOdC7RN+Jyg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SI2PR06MB4393 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Similar to FAULT_LOCK_OP, this patch supports to inject fault into f2fs_down_write_trylock(). Usage: a) echo 524288 > /sys/fs/f2fs//inject_type or b) mount -o fault_type=3D524288 Signed-off-by: Yangtao Li --- v2: -remove f2fs_down_write_trylock macro Documentation/ABI/testing/sysfs-fs-f2fs | 1 + Documentation/filesystems/f2fs.rst | 1 + fs/f2fs/checkpoint.c | 4 ++-- fs/f2fs/f2fs.h | 7 ++++++- fs/f2fs/file.c | 8 ++++---- fs/f2fs/gc.c | 10 +++++----- fs/f2fs/node.c | 2 +- fs/f2fs/super.c | 1 + 8 files changed, 21 insertions(+), 13 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/te= sting/sysfs-fs-f2fs index c1314b7fe544..fc0f82f5c9f9 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -714,6 +714,7 @@ Description: Support configuring fault injection type, = should be FAULT_DQUOT_INIT 0x000010000 FAULT_LOCK_OP 0x000020000 FAULT_BLKADDR 0x000040000 + FAULT_LOCK 0x000080000 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D =20 What: /sys/fs/f2fs//discard_io_aware_gran diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems= /f2fs.rst index 2055e72871fe..a81c896464ff 100644 --- a/Documentation/filesystems/f2fs.rst +++ b/Documentation/filesystems/f2fs.rst @@ -206,6 +206,7 @@ fault_type=3D%d Support configuring fault injection t= ype, should be FAULT_DQUOT_INIT 0x000010000 FAULT_LOCK_OP 0x000020000 FAULT_BLKADDR 0x000040000 + FAULT_LOCK 0x000080000 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D mode=3D%s Control block allocation mode which supports "adaptive" and "lfs". In "lfs" mode, there should be no random diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 1e0164cde23d..b119c9ab0cc1 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -372,7 +372,7 @@ static int f2fs_write_meta_pages(struct address_space *= mapping, goto skip_write; =20 /* if locked failed, cp will flush dirty pages instead */ - if (!f2fs_down_write_trylock(&sbi->cp_global_sem)) + if (!f2fs_down_write_trylock(sbi, &sbi->cp_global_sem)) goto skip_write; =20 trace_f2fs_writepages(mapping->host, wbc, META); @@ -1185,7 +1185,7 @@ static bool __need_flush_quota(struct f2fs_sb_info *s= bi) if (!is_journalled_quota(sbi)) return false; =20 - if (!f2fs_down_write_trylock(&sbi->quota_sem)) + if (!f2fs_down_write_trylock(sbi, &sbi->quota_sem)) return true; if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) { ret =3D false; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e73fefe0d8fb..d434c25fa175 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -61,6 +61,7 @@ enum { FAULT_DQUOT_INIT, FAULT_LOCK_OP, FAULT_BLKADDR, + FAULT_LOCK, FAULT_MAX, }; =20 @@ -2193,8 +2194,12 @@ static inline void f2fs_down_write(struct f2fs_rwsem= *sem) down_write(&sem->internal_rwsem); } =20 -static inline int f2fs_down_write_trylock(struct f2fs_rwsem *sem) +static inline int f2fs_down_write_trylock(struct f2fs_sb_info *sbi, + struct f2fs_rwsem *sem) { + if (time_to_inject(sbi, FAULT_LOCK)) + return 0; + return down_write_trylock(&sem->internal_rwsem); } =20 diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 14e9a20e68df..db8c435d6201 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2462,7 +2462,7 @@ static int f2fs_ioc_gc(struct file *filp, unsigned lo= ng arg) return ret; =20 if (!sync) { - if (!f2fs_down_write_trylock(&sbi->gc_lock)) { + if (!f2fs_down_write_trylock(sbi, &sbi->gc_lock)) { ret =3D -EBUSY; goto out; } @@ -2506,7 +2506,7 @@ static int __f2fs_ioc_gc_range(struct file *filp, str= uct f2fs_gc_range *range) =20 do_more: if (!range->sync) { - if (!f2fs_down_write_trylock(&sbi->gc_lock)) { + if (!f2fs_down_write_trylock(sbi, &sbi->gc_lock)) { ret =3D -EBUSY; goto out; } @@ -2851,7 +2851,7 @@ static int f2fs_move_file_range(struct file *file_in,= loff_t pos_in, f2fs_down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); if (src !=3D dst) { ret =3D -EBUSY; - if (!f2fs_down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) + if (!f2fs_down_write_trylock(sbi, &F2FS_I(dst)->i_gc_rwsem[WRITE])) goto out_src; } =20 @@ -2971,7 +2971,7 @@ static int f2fs_ioc_flush_device(struct file *filp, u= nsigned long arg) end_segno =3D min(start_segno + range.segments, dev_end_segno); =20 while (start_segno < end_segno) { - if (!f2fs_down_write_trylock(&sbi->gc_lock)) { + if (!f2fs_down_write_trylock(sbi, &sbi->gc_lock)) { ret =3D -EBUSY; goto out; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 7e97e4284db5..302950c6cbeb 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -104,7 +104,7 @@ static int gc_thread_func(void *data) if (foreground) { f2fs_down_write(&sbi->gc_lock); goto do_gc; - } else if (!f2fs_down_write_trylock(&sbi->gc_lock)) { + } else if (!f2fs_down_write_trylock(sbi, &sbi->gc_lock)) { stat_other_skip_bggc_count(sbi); goto next; } @@ -1577,7 +1577,7 @@ static int gc_data_segment(struct f2fs_sb_info *sbi, = struct f2fs_summary *sum, return submitted; } =20 - if (!f2fs_down_write_trylock( + if (!f2fs_down_write_trylock(sbi, &F2FS_I(inode)->i_gc_rwsem[WRITE])) { iput(inode); sbi->skipped_gc_rwsem++; @@ -1620,11 +1620,11 @@ static int gc_data_segment(struct f2fs_sb_info *sbi= , struct f2fs_summary *sum, int err; =20 if (S_ISREG(inode->i_mode)) { - if (!f2fs_down_write_trylock(&fi->i_gc_rwsem[READ])) { + if (!f2fs_down_write_trylock(sbi, &fi->i_gc_rwsem[READ])) { sbi->skipped_gc_rwsem++; continue; } - if (!f2fs_down_write_trylock( + if (!f2fs_down_write_trylock(sbi, &fi->i_gc_rwsem[WRITE])) { sbi->skipped_gc_rwsem++; f2fs_up_write(&fi->i_gc_rwsem[READ]); @@ -2150,7 +2150,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 bl= ock_count) secs =3D div_u64(shrunk_blocks, BLKS_PER_SEC(sbi)); =20 /* stop other GC */ - if (!f2fs_down_write_trylock(&sbi->gc_lock)) + if (!f2fs_down_write_trylock(sbi, &sbi->gc_lock)) return -EAGAIN; =20 /* stop CP to protect MAIN_SEC in free_segment_range */ diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index bd1dad523796..e8e838f72ae6 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -517,7 +517,7 @@ int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int= nr_shrink) struct f2fs_nm_info *nm_i =3D NM_I(sbi); int nr =3D nr_shrink; =20 - if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock)) + if (!f2fs_down_write_trylock(sbi, &nm_i->nat_tree_lock)) return 0; =20 spin_lock(&nm_i->nat_list_lock); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7d0202f7b317..768be1c76a47 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -62,6 +62,7 @@ const char *f2fs_fault_name[FAULT_MAX] =3D { [FAULT_DQUOT_INIT] =3D "dquot initialize", [FAULT_LOCK_OP] =3D "lock_op", [FAULT_BLKADDR] =3D "invalid blkaddr", + [FAULT_LOCK] =3D "lock", }; =20 void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, --=20 2.35.1