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From: Muchun Song In-Reply-To: Date: Sat, 7 Feb 2026 11:59:01 +0800 Cc: hannes@cmpxchg.org, hughd@google.com, mhocko@suse.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, david@kernel.org, lorenzo.stoakes@oracle.com, ziy@nvidia.com, harry.yoo@oracle.com, yosry.ahmed@linux.dev, imran.f.khan@oracle.com, kamalesh.babulal@oracle.com, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, chenridong@huaweicloud.com, mkoutny@suse.com, akpm@linux-foundation.org, hamzamahfooz@linux.microsoft.com, apais@linux.microsoft.com, lance.yang@linux.dev, bhe@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Qi Zheng Content-Transfer-Encoding: 7bit Message-Id: <15E46432-D329-40E7-927D-D999551DE865@linux.dev> References: To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 4B710C000E X-Stat-Signature: anchbwigibfynr35jd5snsk8q1r597nj X-Rspam-User: X-HE-Tag: 1770436784-858510 X-HE-Meta: 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 cNSLXvQd lR1qw7JGWS90vJu7iX0B7zF7ZQj5iF3sq/dvN1Fs1JgpQWWZlqMVXZaAw4bda53vXsy17IEpfSaCazQfyso0Rc9a5GxJw03pq9I+/VMX+3NaMhqOpUEkxz21jVW9WxIp6VNMvd7IZysRTrJes4Ft2X3CtDjD+kNaoV75QckGl+YgMzJ2qOtlqtSV+9PYWoaRjSbP9kbdN3R8x0zpWJDTXWVOuOuS4MXwRaZCEzvL62zXXsJsHV+x8wsQMzpxQ0uHhWaFV9yt3TdtiEOsY6rVMVkLidYBfvaoQc5iU6QWDKPNOYEtF/fQtTdy0eNs1vjGxDrs9vnMiO00oXmF7/Zn7Mvw/FF4zLE3iuZcENvE83J/CUdnxXOtekAcvsA== 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 Feb 5, 2026, at 17:01, Qi Zheng wrote: > > From: Qi Zheng > > For cgroup v2, count_shadow_nodes() is the only place to read > non-hierarchical stats (lruvec_stats->state_local). To avoid the need to > consider cgroup v2 during subsequent non-hierarchical stats reparenting, > use lruvec_lru_size() instead of lruvec_page_state_local() to get the > number of lru pages. > > For NR_SLAB_RECLAIMABLE_B and NR_SLAB_UNRECLAIMABLE_B cases, it appears > that the statistics here have already been problematic for a while since > slab pages have been reparented. So just ignore it for now. > > Signed-off-by: Qi Zheng Acked-by: Muchun Song