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From: Shakeel Butt To: JP Kobryn Cc: tj@kernel.org, mhocko@kernel.org, hannes@cmpxchg.org, yosryahmed@google.com, akpm@linux-foundation.org, linux-mm@kvack.org, cgroups@vger.kernel.org, kernel-team@meta.com Subject: Re: [PATCH 10/11] cgroup: separate rstat locks for subsystems Message-ID: References: <20250218031448.46951-1-inwardvessel@gmail.com> <20250218031448.46951-11-inwardvessel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250218031448.46951-11-inwardvessel@gmail.com> X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Stat-Signature: yj3mhn7pfkqdibor68qja3h75jbxqm64 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: CD91118000C X-HE-Tag: 1740183793-985432 X-HE-Meta: U2FsdGVkX18jZrLstxYFNaJaj4YS0b+qpF4xR61LZm+gI20eQjQTWdf8LEBZZOWRHawvY7s8eEVnusLdU0IbgY8wjUGA8srTKDXVNLFy5MZTHDt2x8IdTEvDBj0yOY976rStf+OtZ5WuJ9mthSYCLsHStMPuA8FUj4lObdVZmJR3HBW/lyLg6IoQGshPCjQktLgTCZAprSAmiNZHLWWzkMg7cJDM6uB3uN2XJCnoRrtmNNy/Crunja19MCdJVRkc4zfzaEzDvQaWOpaqKl0iw90MCKS3sy/kgZug76QkixNDAFbgHsAxaJ2tMalfmf3r3S1IETPMrT+5uggp5Fo//CXKx3VftGPuWniGqciXaFFPcq8c3ytivfh3O4fwk75i8GtnmQO0evL5MisNjdakh1JQ0JEVDabhUA3H9mfuiRzQY8eb7uhqhNAk8Rvevc01wAzXyc8VaUW9ieqYe21zVXnslNIQPZaNoSqx1pgisYFn6H4biqRyigQ6A/qEG9a88VyEzC4PI3dHrI1hzYQluZX85H62iwNs4G/HTXI1HUkFr30z1+nvg2nUGxHT0w4CpIjoY8nXi/v3fPJloap1WVl6SH/IB81Te+kShHz/H/ryz4Njov9n8fVyqPjhxGgbep+c6wCZ69tcNN06jscUFwjJaVOguoNAyo+UJigW4Azip76+s4f/DI8J8u4li28q5TPJuEO944m3me/G4MLGxhzAkN6JKmwNOi/dw/p+bRjUuMJb0jm7Mikujtx5+z4sxI50Am87b0lXOt3E8PP7aekQOSOpQlmOdBEyyAoQcJ8KM1m1o8bILpX+wAOqCm3HzE2iGbVcnf7Vb7xZCFIqPrqPaJDqh/5/Nu/N3f5F+7UG/QuerH1d9YWoeEHDfNKWM3fT8vFHCKVuyjS+biiiZxVDPgMQlvh2X88wZvAo46F8iuln9kDzEsya7PaWFvWEB/8jHvY8Xf11ZMhIzHG bLRwSeJ2 a8k+a2l3SIm/okuO3Nk4cFi4VWeJaYj2Qulih7kSLUys1MzuLlsAGHdVn2ojGILKPtJa9wa0F/+tb+jq2/7De3r9RhLAnAASnCNW+wq82vXo8U7yaC25eEaiFhirxXCCGy9M5Z8lZ3ViBAETE4sd9o2jSZNI6frWa0SGHqgIYceiVD9GMY/rLj8bBir5Lv/ZdhLKUuc0IRHURSe4= 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 Mon, Feb 17, 2025 at 07:14:47PM -0800, JP Kobryn wrote: > Add new rstat locks for each subsystem. When handling cgroup subsystem > states, distinguish between states associated with formal subsystems > (memory, io, etc) and the base stats subsystem state (represented by > cgroup::self). This change is made to prevent contention when > updating/flushing stats. > > Signed-off-by: JP Kobryn This looks good as well.