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Thu, 12 Feb 2026 13:23:44 -0800 (PST) Received: from [192.168.4.196] ([73.222.117.172]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2ba9dcea9b7sm4192869eec.25.2026.02.12.13.23.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Feb 2026 13:23:44 -0800 (PST) Message-ID: Date: Thu, 12 Feb 2026 13:23:42 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] mm: move pgscan and pgsteal to node stats To: "Michael S. Tsirkin" Cc: linux-mm@kvack.org, apopple@nvidia.com, akpm@linux-foundation.org, axelrasmussen@google.com, byungchul@sk.com, cgroups@vger.kernel.org, david@kernel.org, eperezma@redhat.com, gourry@gourry.net, jasowang@redhat.com, hannes@cmpxchg.org, joshua.hahnjy@gmail.com, Liam.Howlett@oracle.com, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, matthew.brost@intel.com, mhocko@suse.com, rppt@kernel.org, muchun.song@linux.dev, zhengqi.arch@bytedance.com, rakie.kim@sk.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, surenb@google.com, virtualization@lists.linux.dev, vbabka@suse.cz, weixugc@google.com, xuanzhuo@linux.alibaba.com, ying.huang@linux.alibaba.com, yuanchu@google.com, ziy@nvidia.com, kernel-team@meta.com References: <20260212045109.255391-1-inwardvessel@gmail.com> <20260212045109.255391-3-inwardvessel@gmail.com> <20260212020724-mutt-send-email-mst@kernel.org> Content-Language: en-US From: JP Kobryn In-Reply-To: <20260212020724-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 3EA1F40004 X-Stat-Signature: 434onif86xrcu3cwh54puh7w3m3qxmqf X-HE-Tag: 1770931426-115237 X-HE-Meta: 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 NCMCzCTj 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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 2/11/26 11:08 PM, Michael S. Tsirkin wrote: > On Wed, Feb 11, 2026 at 08:51:09PM -0800, JP Kobryn wrote: >> It would be useful to narrow down reclaim to specific nodes. >> >> Provide per-node reclaim visibility by changing the pgscan and pgsteal >> stats from global vm_event_item's to node_stat_item's. Note this change has >> the side effect of now tracking these stats on a per-memcg basis. >> >> Signed-off-by: JP Kobryn >> Suggested-by: Johannes Weiner > > virtio_balloon changes Thanks. I'll make sure to spell this out in the v2 changelog.