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Tue, 20 Oct 2026 07:43:29 -0700 Message-ID: <50307a46-9e0a-4c38-be48-eee441b391a7@nvidia.com> Date: Tue, 20 Oct 2026 16:43:22 +0200 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] blk-mq: clear stale inactive flag on hctx reuse To: Jens Axboe CC: , , , , , References: <20261020125129.430600-1-nirmoyd@nvidia.com> <179250720323.3338252.2582321707097985664.b4-ty@b4> Content-Language: en-US From: Nirmoy Das In-Reply-To: <179250720323.3338252.2582321707097985664.b4-ty@b4> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: rnnvmail201.nvidia.com (10.129.68.8) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN6PEPF00000071:EE_|MW4PR12MB6732:EE_ X-MS-Office365-Filtering-Correlation-Id: 53f05cca-7bea-4f74-71f5-08df2eb89011 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|1800799024|23010399003|36860700016|22082099003|18002099003|10067099003|4143699003|5023799004|11063799006|261009223027099003|56012099006; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: x5rVyEPd8s4OM+nxgOGE04p1htntjVpcOQiXc57qV0iubu5R0H3B72MYfp1I0SMfIeyPkWptC4qNNL1XOhEtNdffN8c1l/J8LX7CRWY+oXAUOIDZwf/089iSSMa7YHgopv9VdrdYpuuqk7o+CvFfu0g+YhTyt0/n+TOqopZfOPU3alTUF6Xu1mnWX51/ht36C330RO/RcrT4s0l5ZU5o1kCWMcY7NcTDHzrANRzqV1wgLPtHcP8+2D+Cm5jHdsrVpnKy5413+okMN+4jPznFu4f+IkuTFKV9KC2ged7icNsFB8v7jWnc6/aU6X4VLFvI/ozkpVjkWkx3w27e/OaGKXDgRXd6Vz49Rl0rxOkOxiibTjaPi3WxHGSLPzzPy8CwNk6D4oswKpLxBI+vNujhu0pAhAsv1WHw1R09ld/HPooiCu9MTnzr5rsu77D9WMlX X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Oct 2026 14:43:53.3981 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 53f05cca-7bea-4f74-71f5-08df2eb89011 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN6PEPF00000071.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB6732 On 20.10.26 16:40, Jens Axboe wrote: > On Tue, 20 Oct 2026 05:51:29 -0700, Nirmoy Das wrote: >> When the last CPU mapped to an hctx goes offline, >> blk_mq_hctx_notify_offline() sets BLK_MQ_S_INACTIVE. Updating the >> number of hardware queues exits every hctx and parks it on >> q->unused_hctx_list. A later update can reuse a parked hctx through >> blk_mq_alloc_and_init_hctx(), at any queue index, and nothing clears >> the flag. >> >> [...] > Applied, thanks! > > [1/1] blk-mq: clear stale inactive flag on hctx reuse > commit: afc1de47a7ab607ae6403c4bfda36b0bf3cd342f > > Best regards, Thanks, Jens.