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Fri, 1 Nov 2024 14:54:27 +0300 Message-ID: <274e1560-9f6c-4dd9-b27c-2fd0f0c54d03@huawei.com> Date: Fri, 1 Nov 2024 14:54:27 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 0/3] Cgroup-based THP control To: Michal Hocko CC: Gutierrez Asier , , , , , , , , , , , , , , , , , , , , , , , References: <20241030083311.965933-1-gutierrez.asier@huawei-partners.com> <770bf300-1dbb-42fc-8958-b9307486178e@huawei-partners.com> <80d76bad-41d8-4108-ad74-f891e5180e47@huawei.com> Content-Language: en-US From: Stepanov Anatoly In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.123.123.226] X-ClientProxiedBy: mscpeml500004.china.huawei.com (7.188.26.250) To mscpeml500003.china.huawei.com (7.188.49.51) X-Rspam-User: X-Rspamd-Queue-Id: E8550C0016 X-Rspamd-Server: rspam11 X-Stat-Signature: tjtim71a7qxexr54tie8ii6mbpxis9uf X-HE-Tag: 1730462041-509801 X-HE-Meta: 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 iGpNA3qw 7u8ZjrxEQtZMQAweRzvs/qiJAxKP0h85eaRjndJMoTukIhKS1gJeiX0CpCtUx5HiPYTwV+o0XEjuEseyfp429HpwnaZgabVk5c+19pExDRCCYfuMkedxx9MjvxQTnzZGHzW0OXsFX38gPonzoT5m0TEN/H/leoqGfFuCN908HQBRaOjw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 11/1/2024 10:35 AM, Michal Hocko wrote: > On Thu 31-10-24 17:37:12, Stepanov Anatoly wrote: >> If we consider the inheritance approach (prctl + launcher), it's fine until we need to change >> THP mode property for several tasks at once, in this case some batch-change approach needed. > > I do not follow. How is this any different from a single process? Or do > you mean to change the mode for an already running process? > yes, for already running set of processes -- Anatoly Stepanov, Huawei