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[2003:cb:c739:2400:78ac:64bb:a39e:2578]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4256af5b66csm194551335e9.18.2024.07.02.06.17.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Jul 2024 06:17:46 -0700 (PDT) Message-ID: Date: Tue, 2 Jul 2024 15:17:45 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: remove CONFIG_MEMCG_KMEM To: Johannes Weiner , Andrew Morton Cc: Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240701153148.452230-1-hannes@cmpxchg.org> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20240701153148.452230-1-hannes@cmpxchg.org> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: ut1g3q79eicofjjjiwboexqa3atc1tai X-Rspamd-Queue-Id: E08651C0010 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1719926270-188074 X-HE-Meta: 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 Ca7v7Sex PhF2Vactx5IgjWFQ62VCPW8W9ALCP2Hyih8wE9ZIwM7DCvzunHT200ZG0REWXJ4A3069+R/0BcQPvsgqW5XyYhVVR2arHfsdaTXcG1hMSTEVr+w5HTkZTWnBeqX7HfBkmlOIS59Q5QfgcmZenchH3n3578lmEJX8K0LQOU0MGaippfN/nmQXpfV+TclR5+4B0P78VFNWtQUmYEGcclvqJNP1r6rU1Tw14ZG8McNXzIpQxelSxbNIFfM/6XXXEbfW7s0uAQwoUKaZuA0JprMuUZhohBy+nX8FoAaVRnrQIU9EKeF7oV6vLPknOMCkyHiqYh3GOgoK+a1EurCb3oa3a7nVULMkWN0rIBF/vg/7BVc7TsA6a5eLxrb0b36G5YgltlRrMep+9So2NrRA= 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 01.07.24 17:31, Johannes Weiner wrote: > CONFIG_MEMCG_KMEM used to be a user-visible option for whether slab > tracking is enabled. It has been default-enabled and equivalent to > CONFIG_MEMCG for almost a decade. We've only grown more kernel memory > accounting sites since, and there is no imaginable cgroup usecase > going forward that wants to track user pages but not the multitude of > user-drivable kernel allocations. Absolutely Acked-by: David Hildenbrand -- Cheers, David / dhildenb