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Thu, 18 Sep 2025 20:49:43 -0700 (PDT) Received: from G7HT0H2MK4.bytedance.net ([63.216.146.178]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-269802de5e9sm39629235ad.72.2025.09.18.20.49.36 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 18 Sep 2025 20:49:43 -0700 (PDT) From: Qi Zheng To: hannes@cmpxchg.org, hughd@google.com, mhocko@suse.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, david@redhat.com, lorenzo.stoakes@oracle.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Muchun Song , Qi Zheng Subject: [PATCH 1/4] mm: thp: replace folio_memcg() with folio_memcg_charged() Date: Fri, 19 Sep 2025 11:46:32 +0800 Message-ID: <35038de39456f827c88766b90a1cec93cf151ef2.1758253018.git.zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: B06F01C000A X-Stat-Signature: iuif4hadga367ycjcr7s46wwhoij3nr6 X-Rspam-User: X-HE-Tag: 1758253784-510084 X-HE-Meta: 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 c9WuLD+2 NvhQstIY3m7WKRCik+T/ONL2ipP6ah7+gSNZQaSaJ49UtDt8JMwGbO8c4haW5LIcE3PIZ7hT0aeCMa7eComdp4hutWZh01W5M0/9ORIjrqrdfOqqkR0LD/9ey6Xu8rxRynvaFdIfwdvl9J48sBp/l4U+s6oLc3vvIJjRHtZErFPLX1xD6H0xZ7B5Tho4nqzcvn56Zjplr8TyBgHhYE6NfqeL0GH3VQEu1m+F7aHZEPxuvPN2TeHSLKAi7kHFVYHxvc26H7rCkXKePRal6c1STXsoNu/eioDcgn9/+oYIPU+yWEvu+KvhetyGWUgh/JHRWsgocxm6PpqCL0J1l6wXot9IiCplYbVuHOsd+HzMphBi4rP0cnZV4Lb6Iz6vQgWF1P8u7HdWKHCVZbvKi4VxfqIaWNRyURhaq9FlDbdRsz+Fpy15CvUKlAUt9uI/FmBIw6f9K 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: From: Muchun Song folio_memcg_charged() is intended for use when the user is unconcerned about the returned memcg pointer. It is more efficient than folio_memcg(). Therefore, replace folio_memcg() with folio_memcg_charged(). Signed-off-by: Muchun Song Acked-by: Johannes Weiner Signed-off-by: Qi Zheng --- mm/huge_memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 5acca24bbabbe..582628ddf3f33 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -4014,7 +4014,7 @@ bool __folio_unqueue_deferred_split(struct folio *folio) bool unqueued = false; WARN_ON_ONCE(folio_ref_count(folio)); - WARN_ON_ONCE(!mem_cgroup_disabled() && !folio_memcg(folio)); + WARN_ON_ONCE(!mem_cgroup_disabled() && !folio_memcg_charged(folio)); ds_queue = get_deferred_split_queue(folio); spin_lock_irqsave(&ds_queue->split_queue_lock, flags); -- 2.20.1