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[84.247.152.65]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-396ddc555b0sm977985a91.13.2026.08.27.22.27.14 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 27 Aug 2026 22:27:25 -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 3/6] mm/migrate: copy all referenced state via folio_migrate_lru_refs Date: Fri, 28 Aug 2026 13:26:32 +0800 Message-ID: <20260828052702.52673-1-lianux.mm@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260826-mglru-flags-cleanup-v3-3-d9f1c75549c8@tencent.com> References: <20260826-mglru-flags-cleanup-v3-0-d9f1c75549c8@tencent.com> <20260826-mglru-flags-cleanup-v3-3-d9f1c75549c8@tencent.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 10225100005 X-Stat-Signature: cw51gtqtrcpmbs1c4f3rjykwiyx9fgiq X-HE-Tag: 1787894846-269539 X-HE-Meta: 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 N3No/x/U 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > Transfer the reference state first, before the destination folio is > marked uptodate, so a concurrent lockless reader cannot have its > reference update overwritten by the copy. Reviewed-by: Lian Wang