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[84.247.152.65]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-396dda7eb6bsm1070263a91.8.2026.08.27.22.28.47 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 27 Aug 2026 22:28:57 -0700 (PDT) From: Lian Wang To: Kairui Song via B4 Relay Cc: linux-mm@kvack.org, Andrew Morton , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Shakeel Butt , Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , Chris Li , Baolin Wang , Ridong Chen , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Yu Zhao , Zi Yan , Qi Zheng , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Kairui Song , Kairui Song Subject: Re: [PATCH v3 4/6] mm/mglru: move max_seq read into walk_update_folio Date: Fri, 28 Aug 2026 13:28:12 +0800 Message-ID: <20260828052834.52775-1-lianux.mm@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260826-mglru-flags-cleanup-v3-4-d9f1c75549c8@tencent.com> References: <20260826-mglru-flags-cleanup-v3-0-d9f1c75549c8@tencent.com> <20260826-mglru-flags-cleanup-v3-4-d9f1c75549c8@tencent.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 885D5140006 X-Stat-Signature: mxdr8nub7du9tcoxtrjg5uqr17gfazhu X-HE-Tag: 1787894938-787502 X-HE-Meta: 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 h5tBRQ7F 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > The max_seq read now happens once per folio update rather than once > per walk range, so folios always get promoted to the current youngest > generation. Reviewed-by: Lian Wang