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[PATCH 13/13] mm/mremap: convert mremap code to use vma_flags_t Cc: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , To: "Lorenzo Stoakes" , "Lance Yang" From: "Zi Yan" X-Mailer: aerc 0.21.0 References: <380f761d35a3faa4370f8b3f92e3d4af3d4c7110.1782760670.git.ljs@kernel.org> <20260702134947.25189-1-lance.yang@linux.dev> In-Reply-To: X-ClientProxiedBy: DS7P220CA0110.NAMP220.PROD.OUTLOOK.COM (2603:10b6:8:25d::12) To IA0PR12MB8374.namprd12.prod.outlook.com (2603:10b6:208:40e::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PR12MB8374:EE_|CH3PR12MB8185:EE_ X-MS-Office365-Filtering-Correlation-Id: d08dc437-8440-482d-c719-08dedd61b611 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|376014|366016|7416014|11063799006|18002099003|22082099003|4143699003|56012099006; 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 vI5Gtlnk 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functional change intended. >> > >> >Signed-off-by: Lorenzo Stoakes >> >--- >> >> The vm_flags_set() cases below spell out vma_start_write(), but the >> vm_flags_clear() cases don't? > > Yep as I said elsewhere, implicitly taking the lock is terrible and me do= ing > this is completely on purpose to get rid of that :) > > But I haven't been clear enough clearly, so I should put the argument as = to why > that's ok in the commit message. > > Will do so on respin. How about also add a comment to vma_clear*() telling us a lock is not needed and why like you explained a lock is needed for vma_set*()? This asymmetry could confuse people.=20 This patch looks good to me. Reviewed-by: Zi Yan --=20 Best Regards, Yan, Zi