From patchwork Thu Oct 31 09:59:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 13857772 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 49C29198A22; Thu, 31 Oct 2024 10:01:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730368914; cv=fail; b=SPNZflnBu6TEiGhDin8IbqxxMCHjcZEp9gzA7gRHEVQRC5rG6jDEf4kAxU3RVsSL8PPk3kvPgB+LTbjTMjOgGEe9/5JnlwtJAyDla4qJhptDPfU6ESEcnNQmY8aHLGMNmi+QS8IR+mJIq8tMwPIygqaPBtn/SAyTYpEEC1I9dqY= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730368914; c=relaxed/simple; bh=IQ8Ai2d9D6HUH04vHx/RfA9bTRvNZeNq4WJQeq0y8mQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=HnMd6LXEDltPZpH2CjVdJrnoukVMIvmW4Terj/N1CLCY/pdlliItEsFAMe3w9jHh3XxoG4pdpztddd3q/K4RLJcTocXJmGUNlebuZ7iJO0fIs3ZFyWLB6FaPNbrpm1nZGOtsTLJkDXWEAPYiSemXQ4pRx92rNGHEkTt7yoRgwUA= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=MONltmRZ; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=pPG0UIKx; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="MONltmRZ"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="pPG0UIKx" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49V8tXph023668; Thu, 31 Oct 2024 09:59:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2023-11-20; bh=c6EReUW9QYM0vi5N0RYoxOHXOcFSJKmg2fpDWnAvUmE=; b= MONltmRZk2j7Q2qiO6cZ8+9g0yHPMUBmCjeIHTqN/QwegQrq4f2SPiDu/lmj9eoa 8Isp8I+EXuMb3fKnWcNf5YVax9R97QJhDECGqBNjasTimipnNY8kXZPRMxPslxqw pPL5sDsWerPJs+EsH0CXrvvE1agmRQLmjiey9bVczcE1IdgXrCIrLdKodqsNpb6T X6lxuiX5dw/+N9+8UBAGOKNiN5Q6TQtZ53i+PvnSdrFJ6E3a4c1ml435qZOQDGsM iT+Nf3JBd1usjJowL2rxYqPp2xvRsypCEinc9SVPyWEth9n8Og2dX+cT0GSTfodA Ieur+v0knot2iUgiZSl93A== Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.appoci.oracle.com [147.154.18.20]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 42grgmj0td-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 31 Oct 2024 09:59:39 +0000 (GMT) Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 49V86dKT034810; Thu, 31 Oct 2024 09:59:38 GMT Received: from nam12-mw2-obe.outbound.protection.outlook.com (mail-mw2nam12lp2049.outbound.protection.outlook.com [104.47.66.49]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 42hnda7b52-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 31 Oct 2024 09:59:38 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=GciMFW/sE+7Aqcennopag8xUvvA5nFkUzMUyiQj0Jskn0/+4j4TIZuhk/I29amp5Gd9Eb9CTAZif16FPQK4WMPYbM6Fe98Al/gp8ys4N7EuckhdSAUNQimXsIccrG7wqwamOpv7skya2MetQlNgX/VYXT/MF15PXWNOylmknRmSdb7oAxHgR+bff4kbS2nag8gN00aGfg3bF85j81nvt7usyfk6sb8uqQtbYFWuXMpCBSxl/XXEtNkOs8yJJ1GuxaOIxsI5ojTJ/Ep/8LKp9UXW68fPc4xz7srLoEIX0J39VWGjW1h2Z/51zokPOlrV9gaz+WO7g9wP3ntthM32vZg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=c6EReUW9QYM0vi5N0RYoxOHXOcFSJKmg2fpDWnAvUmE=; b=bhsoYeGFYxHi00VmDSg9/qXWG6kTGlsrQBr7gn5UHOsH4FPk6SEZOxv3aUlm2E8L/777Ek8m9pUlDRM8eMvXiEtgWNIScEd9Ms24kj235uPSRFmpd2D0zKGeSPYcBkunsAxJal6/FZhlXtzRJNsq1NUYNEIuzZSX2UP8NwXve0pExVXM5vh6AyTaQwuOq0UNtCUa5whXTyjYfj+NtKHCEse2fxLlF+HUgN84O4NrQP1rw/hPlfaDZZKXfsNFoCMxerWhjGRV2pOLP9MNM/BlIdI7xOhrvMH7QvhLqbPZPjY42Q6DxMVc/6Kt0WaFo+x2esVoSiVPteQ4SxOUK2eT/w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=c6EReUW9QYM0vi5N0RYoxOHXOcFSJKmg2fpDWnAvUmE=; b=pPG0UIKxCP8gXIhTlY1hZOxTMFP8j8NBv+z9VfXZkHnBVQXcnSiX5AtYWk49cgLvlOhOo2wNBCWH3UOxblnqAT+/17liOSktlgb6QUWyIwWJ/FjdDnv0YbsLcYRtS8DIG3qZk0Yd7W2RcOQapIkqEQwWu2DnS/bHM9AAIG0WjOo= Received: from DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) by PH7PR10MB5724.namprd10.prod.outlook.com (2603:10b6:510:125::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.32; Thu, 31 Oct 2024 09:59:35 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088%5]) with mapi id 15.20.8093.027; Thu, 31 Oct 2024 09:59:35 +0000 From: John Garry To: axboe@kernel.dk, song@kernel.org, yukuai3@huawei.com, hch@lst.de Cc: martin.petersen@oracle.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, hare@suse.de, Johannes.Thumshirn@wdc.com, John Garry Subject: [PATCH v3 6/6] md/raid10: Handle bio_split() errors Date: Thu, 31 Oct 2024 09:59:18 +0000 Message-Id: <20241031095918.99964-7-john.g.garry@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20241031095918.99964-1-john.g.garry@oracle.com> References: <20241031095918.99964-1-john.g.garry@oracle.com> X-ClientProxiedBy: MN0PR05CA0011.namprd05.prod.outlook.com (2603:10b6:208:52c::17) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|PH7PR10MB5724:EE_ X-MS-Office365-Filtering-Correlation-Id: 49433b04-9604-423c-e726-08dcf992b9c5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016; 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:DM6PR10MB4313.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: Y5tHLmHVGirnAjlXOW8IdGaquhVS4Xk4LTYDZ2XzQX6jFZz6RCHFg+68lJvHNnOB2DrCbYvPon1GZhdgrh3alKdcXzarsprgRZatvaUVOCG1BM3FOhdCTsrDjnKpJ2IgzhXD62wix90+C8OV+C/+H1bml+V53Dqt+M20bk9AcFRgDJWbH2pXhsVkCBui4ZYj9Z/I6MfkPajeAUghAhuAr6P5zPA9jxJag79bm1BcMTwfUXP2yCKGSvLSe/CNgJrpsuUPcx+CEJpCMSzHdrrzY8fCE5FKRUPknLJzo6+CNm2AhKK0WJGI+mU4SPRgoNzCudCqc/UGz1SlSBPOeGIc5Wek3DL9SfjIl9ZcBFs20QzEqder8mbMsZG/nNr1vntOKMsFy9KxEf1p5l/lGyaSndK8bbmtJlINj/c1LeMLQJ9yE4kKoIcdoyc6+/joqi984/Vq56HndTBTfpsDuKL3/53nm99EtgJvFJmP8DzLjmvx8wjKUEKYKJn7fLMDfvd1PR5df3466FdsL0BL7sBtzti5U4O7oj7GS6uZPO7wQ9CEiUq2UqiDq+udT0+xr0XYBuqvotooPmyzmGWYUhnGsCRIwZAIFMDvoqqUxVQOkGk= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 49433b04-9604-423c-e726-08dcf992b9c5 X-MS-Exchange-CrossTenant-AuthSource: DM6PR10MB4313.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Oct 2024 09:59:35.8122 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: SxCJXCkSAm+FUm50/n3SDiIo6rtvfpkYRJCrV8Q+n9gSMB7XrHNo9Ya5ghWknVYxSvW2YUGgyfvTKQDTZFlQBg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB5724 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-31_01,2024-10-30_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 spamscore=0 phishscore=0 mlxscore=0 bulkscore=0 suspectscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2409260000 definitions=main-2410310075 X-Proofpoint-GUID: af5f3xDWuiOii_YXBPZv_vWtYNeEsHbA X-Proofpoint-ORIG-GUID: af5f3xDWuiOii_YXBPZv_vWtYNeEsHbA Add proper bio_split() error handling. For any error, call raid_end_bio_io() and return. Except for discard, where we end the bio directly. Signed-off-by: John Garry Reviewed-by: Yu Kuai --- drivers/md/raid10.c | 47 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index f3bf1116794a..ccd95459b192 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1159,6 +1159,7 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio, int slot = r10_bio->read_slot; struct md_rdev *err_rdev = NULL; gfp_t gfp = GFP_NOIO; + int error; if (slot >= 0 && r10_bio->devs[slot].rdev) { /* @@ -1206,6 +1207,10 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio, if (max_sectors < bio_sectors(bio)) { struct bio *split = bio_split(bio, max_sectors, gfp, &conf->bio_split); + if (IS_ERR(split)) { + error = PTR_ERR(split); + goto err_handle; + } bio_chain(split, bio); allow_barrier(conf); submit_bio_noacct(bio); @@ -1236,6 +1241,11 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio, mddev_trace_remap(mddev, read_bio, r10_bio->sector); submit_bio_noacct(read_bio); return; +err_handle: + atomic_dec(&rdev->nr_pending); + bio->bi_status = errno_to_blk_status(error); + set_bit(R10BIO_Uptodate, &r10_bio->state); + raid_end_bio_io(r10_bio); } static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio, @@ -1347,9 +1357,10 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, struct r10bio *r10_bio) { struct r10conf *conf = mddev->private; - int i; + int i, k; sector_t sectors; int max_sectors; + int error; if ((mddev_is_clustered(mddev) && md_cluster_ops->area_resyncing(mddev, WRITE, @@ -1482,6 +1493,10 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, if (r10_bio->sectors < bio_sectors(bio)) { struct bio *split = bio_split(bio, r10_bio->sectors, GFP_NOIO, &conf->bio_split); + if (IS_ERR(split)) { + error = PTR_ERR(split); + goto err_handle; + } bio_chain(split, bio); allow_barrier(conf); submit_bio_noacct(bio); @@ -1503,6 +1518,26 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, raid10_write_one_disk(mddev, r10_bio, bio, true, i); } one_write_done(r10_bio); + return; +err_handle: + for (k = 0; k < i; k++) { + int d = r10_bio->devs[k].devnum; + struct md_rdev *rdev = conf->mirrors[d].rdev; + struct md_rdev *rrdev = conf->mirrors[d].replacement; + + if (r10_bio->devs[k].bio) { + rdev_dec_pending(rdev, mddev); + r10_bio->devs[k].bio = NULL; + } + if (r10_bio->devs[k].repl_bio) { + rdev_dec_pending(rrdev, mddev); + r10_bio->devs[k].repl_bio = NULL; + } + } + + bio->bi_status = errno_to_blk_status(error); + set_bit(R10BIO_Uptodate, &r10_bio->state); + raid_end_bio_io(r10_bio); } static void __make_request(struct mddev *mddev, struct bio *bio, int sectors) @@ -1644,6 +1679,11 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio) if (remainder) { split_size = stripe_size - remainder; split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split); + if (IS_ERR(split)) { + bio->bi_status = errno_to_blk_status(PTR_ERR(split)); + bio_endio(bio); + return 0; + } bio_chain(split, bio); allow_barrier(conf); /* Resend the fist split part */ @@ -1654,6 +1694,11 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio) if (remainder) { split_size = bio_sectors(bio) - remainder; split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split); + if (IS_ERR(split)) { + bio->bi_status = errno_to_blk_status(PTR_ERR(split)); + bio_endio(bio); + return 0; + } bio_chain(split, bio); allow_barrier(conf); /* Resend the second split part */