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b=hwDu/gQFRInZmm6OJPBU8nh54p18ZN3ioLtEZGDM4y2ytDQn3DWa8gVZTMlip/oAy NwcgaI9Pa1QgH+6cZzqjeqtXqAaeR6pBC3q3zBNjw4tM/Akd4eWdQn/jpTqP2qvz1l bunT1YVMuUvOtloFUgbgjaCkaTXiV1tINTKMDdrxeawgURjHfirnxJDj8ZrI8cF09r ppeTJb1TbGVMtjg7LAvogO/rqZLPF9LuPq0mqblkz+5qPgNh2LyI4dfGoFp8Vgu+DR yhHtkmqa39TGkeR08YVQMyf5+B3Yt056jKnMkd1KsaJk3CimY3J7znMFmBXU9Nj7CQ ECJnKySwaU7hg== From: SeongJae Park To: SeongJae Park Cc: "# 5 . 18 . x" , Andrew Morton , Jiapeng Chong , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC PATCH v1.2 00/11] mm/damon/sysfs: kobject_del() directories that users can create/remove Date: Thu, 18 Jun 2026 17:30:57 -0700 Message-ID: <20260619003058.8801-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260618151517.5366-1-sj@kernel.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 5E13CC0007 X-Stat-Signature: fzow7jqnigxsya65g9usnccoogyy7p8e X-HE-Tag: 1781829069-712549 X-HE-Meta: U2FsdGVkX1+qG4z/Cstv3tBQjYu8rCZ6fWGpCnmBVPq0aiUuZEXlsXMGQeegP8H+HAN8nsuHjzolPYC+KzlbMt0idkBe6mVqp4aygLv89QOKAJ6/M2zUUsTHSPLubygZxSTgazYZUBnphWpEO52kEjBvFsRGx3CkI9tflTGaAJs+jKJdeQ5fXAgFJgnN0LMnmaqUFQKRmpiPqVrNZCWgjDER6v1/yVQTDtyWMF6fudzKZrO4ceKb3pkhyWWoqPfg17DmOR4FpLE1CQZq7rpSxzV7YDF9LNjWaqeRJm8KPnY69vGWZWBye9xkfl7ZIMwaFya4C32VQlWQFpMyUZ6kEn/Rg4WvavujuBKf/R5/xxkUePkfhblW5Z3fZW0aMXbvNCNn/pUcRtPXYN933ayLp7M4s4ROPNiM6EjwUQdr9GD3GVq2kd3Q5pVxa6/76SArXYF4zrUygCnMJ9s2yZ9g0kt+scrCJsNHtOL3H4qUjt9KeWTHr1w0s/aZ+sMdxdE+wjbZXN24TJYeEbGetWd/Buf4k1/QSyXfMUswysLFfuga/9JxykfIamYAEdMK4d/mHmMKT0eUBblLuPa5jCvejoLSwgrEfhtwEkugQFo4HsVYaUrX4nB82+Wub9pq8W+c99eaQoXwPkFKbXA1wjWJ0Mz3y2yCvLJ9TNB1JUdmeBOVlWBpfLbHbQPreQXzjzBnvF/WJcNnL7VivKbh/dy2MaIp/+yAIlmMnFXtiqN3ScO81FbuP7GRiziyU1o3fFm/u5KSIsr+l2KO7uZx1HUHWSgmISbPyRyeDFZbr6ngYjcxTKA/umSqnGff702hIijCxB0ZqocajpCkJnjY3gQ56beWWwtXJnAqLsOCId5ZoU+uIjCKujXlQRIM39FMuYnBwnbQX6GJuvwJJkxscqJqG5SywxCG/1JzBUt9ew1GQwT2+ty+zcwiohW1pj68K4m6kNwpfdKzguNMcPMJNqY 2EtgMnxd Utr5q+y4dAYywH/tPkNE/ab/GKPQPyvxrzOTTCMCjATECv5bEOO0ttiC0fokjGRz2JgBW6n+nivQMRzl/QhvrkxP7pG0Fz2CsROR0DyQzyrTO2VUfaZrKtr9lDKGSN5DDrxwmiDLsIfEThyRAxCw9/r1et9TPY6/1Z78MOEdmcXD1tKM44483ZVDOaRUEdRAjvaG9TIGBHXPS207CW2HEXL9plc5rVqPxNcbODYATgZJmXuo+HaNzKAVcjBaSorwn+9pZqdGa80lKaMyyHEZj0JIuCA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 18 Jun 2026 08:15:04 -0700 SeongJae Park wrote: [...] > > This doesn't cause catastrophic issues like kernel panics or memory > corruptions. Users can work around by removing all directories first > (write 0 to the nr_* files) and then create new directories after > confirming the old directories are gone. But, this is definitely a bug > that causes a bad user experience. > > Fix the issues by calling kobject_del() before creating new directories. Sashiko found no real issue from this patch, or pre-existing ones that better to be fixed together with this series. I will drop RFC tag in the next revision. I consider this series as hotfixes, and therefore Cc-ed stable@. But, because the impact is minor, I will post the next revision after I believe all MM pull requests for this merge windoow are completed. Thanks, SJ