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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ddb75bfe10sm11409685ad.64.2026.09.18.09.56.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2026 09:56:17 -0700 (PDT) From: Sang-Heon Jeon To: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Muchun Song Subject: [PATCH 1/2] memcg: remove unused page_memcg_check() Date: Sat, 19 Sep 2026 01:55:57 +0900 Message-ID: <20260918165601.1014666-2-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260918165601.1014666-1-ekffu200098@gmail.com> References: <20260918165601.1014666-1-ekffu200098@gmail.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 Content-Type: text/plain; charset="utf-8" Since commit 90f095b816e2 ("mm/page_owner: use memcg_data snapshot to avoid TOCTOU in print_page_owner_memcg()"), page_memcg_check() has no callers. So remove it. No functional change. Signed-off-by: Sang-Heon Jeon Acked-by: Muchun Song Acked-by: Shakeel Butt Reviewed-by: SJ Park --- include/linux/memcontrol.h | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 64c183be8cbf..b57a74617b0b 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -498,13 +498,6 @@ static inline struct mem_cgroup *folio_memcg_check(con= st struct folio *folio) return obj_cgroup_memcg(objcg); } =20 -static inline struct mem_cgroup *page_memcg_check(const struct page *page) -{ - if (PageTail(page)) - return NULL; - return folio_memcg_check((const struct folio *)page); -} - static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct ob= j_cgroup *objcg) { struct mem_cgroup *memcg; @@ -1100,11 +1093,6 @@ static inline struct mem_cgroup *folio_memcg_check(c= onst struct folio *folio) return NULL; } =20 -static inline struct mem_cgroup *page_memcg_check(const struct page *page) -{ - return NULL; -} - static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct ob= j_cgroup *objcg) { return NULL; --=20 2.43.0 From nobody Fri Sep 25 00:01:49 2026 Received: from mail-pj2-f12.google.com (mail-pj2-f12.google.com [74.125.227.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D4FBC51A132 for ; Fri, 18 Sep 2026 16:56:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.140 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789750583; cv=none; b=E+Ma25Vj+W3Tx8E+GdqHt5ZmNSkhW2jLMp5sx4gO/2gIjrbHg0S/v6Ob66B9MR4/BuBSdw6Rga7gdyfO5xzrBOeUHpvnF1ycKZ/LuCW5RE8Hy6ilIp5/joUC7CJZYE7VKW1tprGkCBhy8/RTmHwIJ4soqdVrRnNniIjYecsYRX8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789750583; c=relaxed/simple; bh=H+ukdmwXP+tMkaQEpJ23doFZ9tvP/S4l/tdO9wntvVQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ddb75bfe10sm11409685ad.64.2026.09.18.09.56.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2026 09:56:20 -0700 (PDT) From: Sang-Heon Jeon To: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Muchun Song Subject: [PATCH 2/2] memcg: remove unused mod_memcg_page_state() Date: Sat, 19 Sep 2026 01:55:58 +0900 Message-ID: <20260918165601.1014666-3-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260918165601.1014666-1-ekffu200098@gmail.com> References: <20260918165601.1014666-1-ekffu200098@gmail.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 Content-Type: text/plain; charset="utf-8" Since commit c466412c73c3 ("mm: memcontrol: switch to native NR_VMALLOC vmstat counter"), mod_memcg_page_state() has no callers. So remove it. No functional change. Signed-off-by: Sang-Heon Jeon Acked-by: Muchun Song Acked-by: Shakeel Butt Reviewed-by: SJ Park --- include/linux/memcontrol.h | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index b57a74617b0b..c0557e1e3d21 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -949,21 +949,6 @@ void mem_cgroup_print_oom_group(struct mem_cgroup *mem= cg); void mod_memcg_state(struct mem_cgroup *memcg, enum memcg_stat_item idx, int val); =20 -static inline void mod_memcg_page_state(const struct page *page, - enum memcg_stat_item idx, int val) -{ - struct mem_cgroup *memcg; - - if (mem_cgroup_disabled()) - return; - - rcu_read_lock(); - memcg =3D folio_memcg(page_folio(page)); - if (memcg) - mod_memcg_state(memcg, idx, val); - rcu_read_unlock(); -} - unsigned long memcg_events(const struct mem_cgroup *memcg, int event); unsigned long memcg_page_state(const struct mem_cgroup *memcg, int idx); unsigned long memcg_page_state_output(const struct mem_cgroup *memcg, int = item); @@ -1396,11 +1381,6 @@ static inline void mod_memcg_state(struct mem_cgroup= *memcg, { } =20 -static inline void mod_memcg_page_state(const struct page *page, - enum memcg_stat_item idx, int val) -{ -} - static inline unsigned long memcg_page_state(const struct mem_cgroup *memc= g, int idx) { return 0; --=20 2.43.0