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[195.250.132.146]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4324ea2278dsm62489855f8f.18.2025.12.29.02.53.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Dec 2025 02:53:17 -0800 (PST) Date: Mon, 29 Dec 2025 11:53:15 +0100 From: Michal =?utf-8?Q?Koutn=C3=BD?= To: Harry Yoo Cc: Qi Zheng , Shakeel Butt , Yosry Ahmed , hannes@cmpxchg.org, hughd@google.com, mhocko@suse.com, roman.gushchin@linux.dev, muchun.song@linux.dev, david@kernel.org, lorenzo.stoakes@oracle.com, ziy@nvidia.com, imran.f.khan@oracle.com, kamalesh.babulal@oracle.com, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, chenridong@huaweicloud.com, akpm@linux-foundation.org, hamzamahfooz@linux.microsoft.com, apais@linux.microsoft.com, lance.yang@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Qi Zheng Subject: Re: [PATCH v2 00/28] Eliminate Dying Memory Cgroup Message-ID: References: <5dsb6q2r4xsi24kk5gcnckljuvgvvp6nwifwvc4wuho5hsifeg@5ukg2dq6ini5> <1264fd2b-e9bd-4a3b-86ad-eb919941f0a4@linux.dev> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="qya2ibtxqvkulq4p" Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 784BE1C0002 X-Stat-Signature: 951yaud1hcza7cfr6kiwrk7cktwyo9qn X-Rspam-User: X-HE-Tag: 1767005599-564003 X-HE-Meta: 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 Pxg/gYA1 kIZGlzQERN0E88+qNhyzRKD4BNIXoPdzqqIebp2Tg9igRiAs7sphiBo0bo0/I4JirdK8pEf0JkkgItx952C3c4kWk6nLkk5AIeAwFt4QRCcYzPQOYcIGeCbvJDqXsFrXUQjyD/bmEGQs7onJzKAOajAslKcLMrRWzVkJdZ8TEN7yYahOsN7nf1f7qAbjXZY6pNk3Rtrh7L1Tr+uQoMKiNA833d7pKd4Gd/Qt9GaIOvIr2cvb/U+TTomm3lG+7qJcE6uKABFbFFuFGrAzO9QSyMv86O+Ai4YxoQJxGWAP563zTzcdvZ7tJIaUtNud5IrgaN9S3DA+j05xOK+/80s8T6oEenIZ/OXtyKpcdUtYtWuf2bmuIYLn8QLjLF97yAZrgUuhXAiw9aOifrNFkni2FJvuGXyvYzR+xq8rlhuxyE3QCLYYUQh+K8NNvSeVOuAiTN4VP8Wj60gPLiMs= 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: --qya2ibtxqvkulq4p Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v2 00/28] Eliminate Dying Memory Cgroup MIME-Version: 1.0 On Mon, Dec 29, 2025 at 06:35:22PM +0900, Harry Yoo = wrote: > > The memcg-v1 was originally planned to be removed, could we skip > > supporting v1? >=20 > You mean not reparenting LRU pages if CONFIG_MEMCG_V1 is set? More precisely it should be dynamic !cgroup_subsys_on_dfl(memory_cgrp_subsys) > That may work, But would it make the code actually simpler? (Keeping two versions at multiple places vs transferring local stats at the right moment.) Thanks, Michal --qya2ibtxqvkulq4p Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iJEEABYKADkWIQRCE24Fn/AcRjnLivR+PQLnlNv4CAUCaVJdmRsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDIACgkQfj0C55Tb+AjcmwEA40zUj0sp6cAAd3bXgrQF sR0AqL6ydZGZfdd4i1DDccAA/0xU+vWaUPKB0gC3zq4HkdYA+8vTysTe6W9hZxPW eCII =A4Sk -----END PGP SIGNATURE----- --qya2ibtxqvkulq4p--