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Wysocki" , , Michael Ellerman Subject: [PATCH] debufgs: debugfs_create_blob can set the file size Date: Wed, 7 Feb 2024 14:06:19 -0600 Message-ID: <20240207200619.3354549-1-ttabi@nvidia.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF00003439:EE_|DS0PR12MB8413:EE_ X-MS-Office365-Filtering-Correlation-Id: 2b3a08d2-88d8-4199-234b-08dc28185fd5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: fgwzlB63rR28mCfxx9T7u3JUcsp7kmZlUiYEysJ9bVa7Ef0YbW8GhO+g9g6MHnMXkCF8ilaA4tfL7dCqshP9qtWc8qFjmoi484t4BnXpCzf0ej+pW632Vb56rSHrOjZoSf8eopbXZe21UxlSlcwP404FxISASpG3zO4rCdrGMltj3R4YCrGxJXpL0C9SHaF5fC1no+VCu8Ap47YQml+m4lH3hDLg65UV+rQbrn3OZ5yhepPy7hszTrRuQEbxyc2fXYucXBpGJdvvQseU2w/SxqeF4LdlefkVGz3JtrHHyxjL+xEOSgWzaEt6Uc7vUJrpId+MXue28mdAw6bsHkR0ji9xCIZIOuoJTjEQi1FPSw0ssJflU9nn744yqKzsQsI8YSNtmEvvnvWTpkEJww982UwYl2tkC7mSfmRJ3m9nTV0+/xUYyLCVcMpjaAhHKvBf37Cv6aviWWuUugrCjGUUH1vgtL3ZLE80n4T5LMInXYskNEHwy/qopJrFr07IkDY7m4s0dpZSJsNgV2XnQk6yQYC8Q8nMrLsTPrZBFiXtOx4FxzqClV2yE8cIxjfuxB6wIKqGcIv3N3MU6dC2WBUbK7r1dj/VmrwpqUsGahYg+89dUmCbvdkV1ZPMRzdJi2MMeqQFYLlQZYj81f+J2qpQ6LvKybbNvpTAstQr17o7b0JW/FGGRIC2kOS2lCzYesh/usp6KcR1EIao++zwC+IeuSg+hLmRFvKmj2sjp7XRuEMw6ri+uN9gwogIGu+bE/jH X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(396003)(39860400002)(136003)(376002)(346002)(230922051799003)(186009)(451199024)(1800799012)(82310400011)(64100799003)(36840700001)(40470700004)(46966006)(7636003)(1076003)(26005)(426003)(47076005)(82740400003)(356005)(83380400001)(8676002)(70586007)(110136005)(8936002)(336012)(36860700001)(5660300002)(316002)(7696005)(70206006)(2616005)(6666004)(478600001)(86362001)(36756003)(41300700001)(40480700001)(2906002)(40460700003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Feb 2024 20:07:13.0491 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2b3a08d2-88d8-4199-234b-08dc28185fd5 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: DS2PEPF00003439.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8413 debugfs_create_blob() is given the size of the blob, so use it to also set the size of the dentry. For example, efi=debug previously showed -r-------- 1 root root 0 Feb 7 13:30 boot_services_code0 -r-------- 1 root root 0 Feb 7 13:30 boot_services_code1 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data0 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data1 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data2 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data3 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data4 but with this patch it shows -r-------- 1 root root 12783616 Feb 7 13:26 boot_services_code0 -r-------- 1 root root 262144 Feb 7 13:26 boot_services_code1 -r-------- 1 root root 41705472 Feb 7 13:26 boot_services_data0 -r-------- 1 root root 23187456 Feb 7 13:26 boot_services_data1 -r-------- 1 root root 110645248 Feb 7 13:26 boot_services_data2 -r-------- 1 root root 1048576 Feb 7 13:26 boot_services_data3 -r-------- 1 root root 4096 Feb 7 13:26 boot_services_data4 Signed-off-by: Timur Tabi --- fs/debugfs/file.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index c6f4a9a98b85..d97800603a8f 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -1152,7 +1152,14 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob) { - return debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob); + struct dentry *dentry; + + dentry = debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob); + if (!IS_ERR(dentry)) + d_inode(dentry)->i_size = blob->size; + + return dentry; + } EXPORT_SYMBOL_GPL(debugfs_create_blob); -- 2.34.1