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oammnpywurereqkid8icg5pautn9ro46 X-Rspam-User: X-HE-Tag: 1767000969-993848 X-HE-Meta: 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 Slm6uXFr t6l/BDLQ6ZVyQhn6F36qzs7eVkcMc1ODUD8xuT/+3FRyJC3eDBOr3bQ/FuJtK4a0AYSNxVP26j43y5+U= 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, Dec 29, 2025 at 03:48:26PM +0800, Qi Zheng wrote: > > > On 12/24/25 7:20 AM, Shakeel Butt wrote: > > On Tue, Dec 23, 2025 at 08:04:50PM +0000, Yosry Ahmed wrote: > > [...] > > > > > > I think there might be a problem with non-hierarchical stats on cgroup > > > v1, I brought it up previously [*]. I am not sure if this was addressed > > > but I couldn't immediately find anything. > > > > Sigh, the curse of memcg-v1. Let's see what we can do to not break v1. > > The memcg-v1 was originally planned to be removed, could we skip > supporting v1? You mean not reparenting LRU pages if CONFIG_MEMCG_V1 is set? That may work, but IMHO given that there is no clear timeline for removal yet (some v1-specific features have been officially deprecated, but memcg v1 as a whole hasn't), implementing Shakeel's suggestion [1] may be a good option (it doesn't seem to add much complexity) But it can be argued that it's not good enough reason to delay the series; adding support for V1 later sounds sensible to me. Anyway I'm fine either way and I'm not a memcg maintainer myself, so this is just my two cents. [1] https://lore.kernel.org/linux-mm/wvj4w7ifmrifnh5bvftdziudsj52fdnwlhbt2oifwmxmi4eore@ob3mrfahhnm5/ -- Cheers, Harry / Hyeonggon