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From: Shakeel Butt To: Qi Zheng Cc: 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, 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 Subject: Re: [PATCH v4 28/31] mm: workingset: use lruvec_lru_size() to get the number of lru pages Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: B4F8D18000B X-Stat-Signature: runci5yc48woft9qkfk76xy95gp1cs4b X-HE-Tag: 1770428934-557625 X-HE-Meta: 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 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 Thu, Feb 05, 2026 at 05:01:47PM +0800, 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: Shakeel Butt