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smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4dRb4X390yzYQtkx; Thu, 11 Dec 2025 09:45:00 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.75]) by mail.maildlp.com (Postfix) with ESMTP id 76CEB1A1548; Thu, 11 Dec 2025 09:45:16 +0800 (CST) Received: from hulk-vt.huawei.com (unknown [10.67.174.121]) by APP2 (Coremail) with SMTP id Syh0CgB3VlAgIjpp39lLBQ--.49534S3; Thu, 11 Dec 2025 09:45:16 +0800 (CST) From: Chen Ridong To: hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, david@kernel.org, zhengqi.arch@bytedance.com, lorenzo.stoakes@oracle.com Cc: cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, lujialin4@huawei.com, chenridong@huaweicloud.com Subject: [PATCH -next v3 1/2] memcg: move mem_cgroup_usage memcontrol-v1.c Date: Thu, 11 Dec 2025 01:30:18 +0000 Message-Id: <20251211013019.2080004-2-chenridong@huaweicloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251211013019.2080004-1-chenridong@huaweicloud.com> References: <20251211013019.2080004-1-chenridong@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: Syh0CgB3VlAgIjpp39lLBQ--.49534S3 X-Coremail-Antispam: 1UD129KBjvJXoWxJF1fZF1fWr43XF4DAry8uFg_yoW5WF45pF s3C3ZxZa1rJrW5Wr4akFyDur93Za1xXay5t3s7tryfZwnxtwn0g342y3yrAFW5CF97Xrnr Xws0yw1xGr4Ykw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUm014x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r4j6ryUM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCY1x0262kKe7AKxVW8ZVWrXwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWU JVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_GFv_WrylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0x vEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVj vjDU0xZFpf9x0pR75rsUUUUU= X-CM-SenderInfo: hfkh02xlgr0w46kxt4xhlfz01xgou0bp/ Content-Type: text/plain; charset="utf-8" From: Chen Ridong Currently, mem_cgroup_usage is only used for v1, just move it to memcontrol-v1.c Signed-off-by: Chen Ridong Acked-by: Michal Hocko Acked-by: Johannes Weiner Acked-by: Shakeel Butt --- mm/memcontrol-v1.c | 22 ++++++++++++++++++++++ mm/memcontrol-v1.h | 2 -- mm/memcontrol.c | 22 ---------------------- 3 files changed, 22 insertions(+), 24 deletions(-) diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c index 6eed14bff742..0b50cb122ff3 100644 --- a/mm/memcontrol-v1.c +++ b/mm/memcontrol-v1.c @@ -427,6 +427,28 @@ static int mem_cgroup_move_charge_write(struct cgroup_= subsys_state *css, } #endif =20 +static unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap) +{ + unsigned long val; + + if (mem_cgroup_is_root(memcg)) { + /* + * Approximate root's usage from global state. This isn't + * perfect, but the root usage was always an approximation. + */ + val =3D global_node_page_state(NR_FILE_PAGES) + + global_node_page_state(NR_ANON_MAPPED); + if (swap) + val +=3D total_swap_pages - get_nr_swap_pages(); + } else { + if (!swap) + val =3D page_counter_read(&memcg->memory); + else + val =3D page_counter_read(&memcg->memsw); + } + return val; +} + static void __mem_cgroup_threshold(struct mem_cgroup *memcg, bool swap) { struct mem_cgroup_threshold_ary *t; diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h index 6358464bb416..e92b21af92b1 100644 --- a/mm/memcontrol-v1.h +++ b/mm/memcontrol-v1.h @@ -22,8 +22,6 @@ iter !=3D NULL; \ iter =3D mem_cgroup_iter(NULL, iter, NULL)) =20 -unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap); - void drain_all_stock(struct mem_cgroup *root_memcg); =20 unsigned long memcg_events(struct mem_cgroup *memcg, int event); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index e2e49f4ec9e0..dbe7d8f93072 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3272,28 +3272,6 @@ void folio_split_memcg_refs(struct folio *folio, uns= igned old_order, css_get_many(&__folio_memcg(folio)->css, new_refs); } =20 -unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap) -{ - unsigned long val; - - if (mem_cgroup_is_root(memcg)) { - /* - * Approximate root's usage from global state. This isn't - * perfect, but the root usage was always an approximation. - */ - val =3D global_node_page_state(NR_FILE_PAGES) + - global_node_page_state(NR_ANON_MAPPED); - if (swap) - val +=3D total_swap_pages - get_nr_swap_pages(); - } else { - if (!swap) - val =3D page_counter_read(&memcg->memory); - else - val =3D page_counter_read(&memcg->memsw); - } - return val; -} - static int memcg_online_kmem(struct mem_cgroup *memcg) { struct obj_cgroup *objcg; --=20 2.34.1