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Tue, 11 May 2021 03:52:14 -0700 (PDT) Received: from localhost.localdomain ([139.177.225.240]) by smtp.gmail.com with ESMTPSA id n18sm13501952pgj.71.2021.05.11.03.52.07 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 May 2021 03:52:13 -0700 (PDT) From: Muchun Song To: willy@infradead.org, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, vdavydov.dev@gmail.com, shakeelb@google.com, guro@fb.com, shy828301@gmail.com, alexs@kernel.org, richard.weiyang@gmail.com, david@fromorbit.com, trond.myklebust@hammerspace.com, anna.schumaker@netapp.com Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, zhengqi.arch@bytedance.com, duanxiongchun@bytedance.com, fam.zheng@bytedance.com, Muchun Song Subject: [PATCH 08/17] mm: list_lru: remove memcg_aware from struct list_lru Date: Tue, 11 May 2021 18:46:38 +0800 Message-Id: <20210511104647.604-9-songmuchun@bytedance.com> X-Mailer: git-send-email 2.21.0 (Apple Git-122) In-Reply-To: <20210511104647.604-1-songmuchun@bytedance.com> References: <20210511104647.604-1-songmuchun@bytedance.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: 1A6473DC Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=bytedance-com.20150623.gappssmtp.com header.s=20150623 header.b=DgYc8YN5; spf=pass (imf12.hostedemail.com: domain of songmuchun@bytedance.com designates 209.85.216.49 as permitted sender) smtp.mailfrom=songmuchun@bytedance.com; dmarc=pass (policy=none) header.from=bytedance.com X-Rspamd-Server: rspam04 X-Stat-Signature: 9mq7ajzrtdg4nhdam3muwf7a9korjsam Received-SPF: none (bytedance.com>: No applicable sender policy available) receiver=imf12; identity=mailfrom; envelope-from=""; helo=mail-pj1-f49.google.com; client-ip=209.85.216.49 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620730318-284859 Content-Transfer-Encoding: quoted-printable 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: We can use ->memcg_lrus to indicate if the lru is memcg aware. So ->memcg_aware is redundant and remove it. Signed-off-by: Muchun Song --- include/linux/list_lru.h | 1 - mm/list_lru.c | 9 +++++---- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h index 228bef9fdd0b..00a13ad6128a 100644 --- a/include/linux/list_lru.h +++ b/include/linux/list_lru.h @@ -55,7 +55,6 @@ struct list_lru { #ifdef CONFIG_MEMCG_KMEM struct list_head list; int shrinker_id; - bool memcg_aware; /* for cgroup aware lrus points to per cgroup lists, otherwise NULL */ struct list_lru_memcg __rcu *memcg_lrus; #endif diff --git a/mm/list_lru.c b/mm/list_lru.c index 57c55916cc1c..cf17ff5a5940 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -20,7 +20,7 @@ static DEFINE_MUTEX(list_lrus_mutex); =20 static inline bool list_lru_memcg_aware(struct list_lru *lru) { - return lru->memcg_aware; + return !!lru->memcg_lrus; } =20 static void list_lru_register(struct list_lru *lru) @@ -73,7 +73,7 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void = *ptr, struct list_lru_one *l =3D &nlru->lru; struct mem_cgroup *memcg =3D NULL; =20 - if (!lru->memcg_lrus) + if (!list_lru_memcg_aware(lru)) goto out; =20 memcg =3D mem_cgroup_from_obj(ptr); @@ -368,9 +368,10 @@ static int memcg_init_list_lru(struct list_lru *lru,= bool memcg_aware) struct list_lru_memcg *memcg_lrus; int size =3D memcg_nr_cache_ids; =20 - lru->memcg_aware =3D memcg_aware; - if (!memcg_aware) + if (!memcg_aware) { + lru->memcg_lrus =3D NULL; return 0; + } =20 memcg_lrus =3D kvmalloc(sizeof(*memcg_lrus) + size * sizeof(memcg_lrus->lrus[0]), GFP_KERNEL); --=20 2.11.0