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From: Rik van Riel To: Chris Li , Gregory Price Cc: Johannes Weiner , Baoquan He , Nhat Pham , Kairui Song , Michal Hocko , Roman Gushchin , Shakeel Butt , Yosry Ahmed , David Hildenbrand , Muchun Song , Kemeng Shi , Barry Song , YoungJun Park , Chengming Zhou , "Lorenzo Stoakes (Oracle)" , "Liam R. Howlett" , "Vlastimil Babka (SUSE)" , Mike Rapoport , Suren =?UTF-8?Q?Baghdasaryan=EF=BF=BC?= , Qi Zheng , Axel Rasmussen , Yuanchu Xie , Wei Xu , Wenchao Hao , Jonathan Corbet , Hugh Dickins , Baolin Wang , Tejun Heo , Michal =?ISO-8859-1?Q?Koutn=FD?= , Shuah Khan , Kunwu Chan , Meta kernel team , Linux Memory Management List , Linux Kernel Mailing List , linux-doc@vger.kernel.org, "open list:CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)" , Andrew Morton , Kairui Song , Joshua Hahn Date: Sat, 19 Sep 2026 21:14:30 -0400 In-Reply-To: References: Autocrypt: addr=riel@surriel.com; prefer-encrypt=mutual; keydata=mQENBFIt3aUBCADCK0LicyCYyMa0E1lodCDUBf6G+6C5UXKG1jEYwQu49cc/gUBTTk33A eo2hjn4JinVaPF3zfZprnKMEGGv4dHvEOCPWiNhlz5RtqH3SKJllq2dpeMS9RqbMvDA36rlJIIo47 Z/nl6IA8MDhSqyqdnTY8z7LnQHqq16jAqwo7Ll9qALXz4yG1ZdSCmo80VPetBZZPw7WMjo+1hByv/ lvdFnLfiQ52tayuuC1r9x2qZ/SYWd2M4p/f5CLmvG9UcnkbYFsKWz8bwOBWKg1PQcaYHLx06sHGdY dIDaeVvkIfMFwAprSo5EFU+aes2VB2ZjugOTbkkW2aPSWTRsBhPHhV6dABEBAAG0HlJpayB2YW4gU mllbCA8cmllbEByZWRoYXQuY29tPokBHwQwAQIACQUCW5LcVgIdIAAKCRDOed6ShMTeg05SB/986o gEgdq4byrtaBQKFg5LWfd8e+h+QzLOg/T8mSS3dJzFXe5JBOfvYg7Bj47xXi9I5sM+I9Lu9+1XVb/ r2rGJrU1DwA09TnmyFtK76bgMF0sBEh1ECILYNQTEIemzNFwOWLZZlEhZFRJsZyX+mtEp/WQIygHV WjwuP69VJw+fPQvLOGn4j8W9QXuvhha7u1QJ7mYx4dLGHrZlHdwDsqpvWsW+3rsIqs1BBe5/Itz9o 6y9gLNtQzwmSDioV8KhF85VmYInslhv5tUtMEppfdTLyX4SUKh8ftNIVmH9mXyRCZclSoa6IMd635 Jq1Pj2/Lp64tOzSvN5Y9zaiCc5FucXtB9SaWsgdmFuIFJpZWwgPHJpZWxAc3VycmllbC5jb20+iQE +BBMBAgAoBQJSLd2lAhsjBQkSzAMABgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRDOed6ShMTe g4PpB/0ZivKYFt0LaB22ssWUrBoeNWCP1NY/lkq2QbPhR3agLB7ZXI97PF2z/5QD9Fuy/FD/jddPx KRTvFCtHcEzTOcFjBmf52uqgt3U40H9GM++0IM0yHusd9EzlaWsbp09vsAV2DwdqS69x9RPbvE/Ne fO5subhocH76okcF/aQiQ+oj2j6LJZGBJBVigOHg+4zyzdDgKM+jp0bvDI51KQ4XfxV593OhvkS3z 3FPx0CE7l62WhWrieHyBblqvkTYgJ6dq4bsYpqxxGJOkQ47WpEUx6onH+rImWmPJbSYGhwBzTo0Mm G1Nb1qGPG+mTrSmJjDRxrwf1zjmYqQreWVSFEt26tBpSaWsgdmFuIFJpZWwgPHJpZWxAZmIuY29tP okBPgQTAQIAKAUCW5LbiAIbIwUJEswDAAYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQznneko TE3oOUEQgAsrGxjTC1bGtZyuvyQPcXclap11Ogib6rQywGYu6/Mnkbd6hbyY3wpdyQii/cas2S44N cQj8HkGv91JLVE24/Wt0gITPCH3rLVJJDGQxprHTVDs1t1RAbsbp0XTksZPCNWDGYIBo2aHDwErhI omYQ0Xluo1WBtH/UmHgirHvclsou1Ks9jyTxiPyUKRfae7GNOFiX99+ZlB27P3t8CjtSO831Ij0Ip QrfooZ21YVlUKw0Wy6Ll8EyefyrEYSh8KTm8dQj4O7xxvdg865TLeLpho5PwDRF+/mR3qi8CdGbkE c4pYZQO8UDXUN4S+pe0aTeTqlYw8rRHWF9TnvtpcNzZw== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) MIME-Version: 1.0 X-Rspam-User: X-Stat-Signature: fh7psqa6zzuw117tn34ybmcwk5ahthre X-Rspamd-Queue-Id: 180D0C0005 X-Rspamd-Server: rspam07 X-HE-Tag: 1789866924-796699 X-HE-Meta: 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 IqTB/jut Fc7RkTPyekGkTo4lKMcfcyTEj8tTqjaTRSAyKgUQX/FPBRZSdoK7mpnpg+++hjRfLb+vSWsaw+bclzQ040y1Bmr6jhOBuY2o2Z2SSmU86Ltw/7Ng1feWuQQ0yS6opV3oxXtfmeFB+rM9EW3U3MY4kOwMukVehi1JXqujyPv3tsj6ZSfiqmWU3cQ8izvvas9yH3EbMEk+At2Wf5wbBAPut97slasMs2qDyCPSmziDycBQB41Z7zh03kZJBN2t/BNEl7D4U2+udNwALs6yReZz4/gDihwjB+cnOjk4vAiOgIbkxPWqfAbULWIaKTPfQdKG8kgifsV+qRq7fPE89fFB6seI22F00tEQdVewX+ghmu3cEEO6UzLFfxqIsdtjs6K1XMDP6J/ff7G2+5RWqkbkAAWwXZg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, 2026-09-19 at 09:02 -1000, Chris Li wrote: >=20 > Secondly, I notice that you are reasoning from the memory usage > aspect. That is a different usage requirement angle than the SLO > violations. Maybe we need a separate counter to track actual memory > usage, regardless of compression status. >=20 That's what the cgroup memory.current does. It adds up anonymous, file, accounted slab, and (after compression) zswap memory use for a cgroup, and can be limited with all the usual cgroup limits. --=20 All Rights Reversed.