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Tue, 3 Nov 2026 08:10:38 -0800 Message-ID: <1acc56d9-3df1-4a79-a961-85ce607104c1@nvidia.com> Date: Tue, 3 Nov 2026 17:10:35 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] block: keep flush error across tag iterator reference drops To: Christoph Hellwig CC: , , , , , , , References: <20261020190426.1073318-1-nirmoyd@nvidia.com> Content-Language: en-US From: Nirmoy Das In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002315:EE_|SAWPR12MB999315:EE_ X-MS-Office365-Filtering-Correlation-Id: 3bf3e1ed-aa0c-4453-866f-08df39c5108f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|82310400026|376014|1800799024|23010399003|10067099003|22082099003|18002099003|13003099007|56012099006|11063799006|4143699003|261026140227099003|261009223327099003|261022105027099003|261022075727099003|261009223027099003|261009221227099003|261009221727099003|261009220027099003|261021123027099003|261028144727099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: PnG4dyEuhdeIqJS/Udb1LVjIjIRhrJPfTy0jGN4rr3YUaTRJ1ExYsW/bPcyeT6q55CYerusCpav+tea8nPRXSWBHbpuls9had1GPTmmv06qz40d4MAWcu+pldC/2I8uWxYT18u5Ya10939sfxAH/rwXSNcJO6yNng/8z8A8sAPOFz791J0K4r0+jJsPHRJ3hAFoTT+OXl5G8D+6cac/dAgvQAOVZnWeUNJ4pUpCJl84YLYYh4GdmL38mmrxHyP/VoamOZsVZ2CYcL2jMoMK/QXUpyFJ1n42toCe8sM9XzUpwoDAKfwjYqR6fCQQ7jSFH0xctlf/4S2EFpiQObkH/vWSwp64mPL2EmFIBdKaoBL99og7IcXpa72pvU+1kHHVio9SGlhBtpBmocUAYMq7Ff2aNwz9nEJhYry6m9+NymKbJhAgL/aTCxnf0cKj7zwZ7 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Nov 2026 16:11:05.7829 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3bf3e1ed-aa0c-4453-866f-08df39c5108f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF00002315.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SAWPR12MB999315 On 03.11.26 10:58, Christoph Hellwig wrote: > Looks good. Bu I guess Jens already picked up the AI-Version of > this: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67c43ceaa29e9b904216651697adf20445b219fc > > Sorry for not catchign yours earlier. No worries. > > On Tue, Oct 20, 2026 at 12:04:26PM -0700, Nirmoy Das wrote: >> Reproduced on v7.3 in an x86 QEMU guest with scsi_debug, failing every >> SYNCHRONIZE CACHE through its debugfs error injection while 16 >> processes read /sys/block/sda/inflight: >> >> modprobe scsi_debug dev_size_mb=64 ndelay=100000 >> echo "2 1 0x35 0x00 0x00 0x02 0x04 0x44 0x00" > \ >> /sys/kernel/debug/scsi_debug//error >> >> fsync() returned 0 for 35 of 18000 calls on /dev/sda and for 46 of 18000 >> calls on a file on ext4 without a journal, over six runs. With this >> change every call failed. > Can you add this to blktests? I will send a PR https://github.com/linux-blktests/blktests Regards, Nirmoy