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From: Muchun Song In-Reply-To: <20260202155634.650837-9-kas@kernel.org> Date: Wed, 4 Feb 2026 11:40:35 +0800 Cc: Andrew Morton , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden , Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org Content-Transfer-Encoding: 7bit Message-Id: <92298523-BC8E-459A-B99D-3C91D57982D0@linux.dev> References: <20260202155634.650837-1-kas@kernel.org> <20260202155634.650837-9-kas@kernel.org> To: Kiryl Shutsemau X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 648D6C0004 X-Stat-Signature: 1a3forzgy97zozazxa43n6qdffkmswwm X-HE-Tag: 1770176476-306053 X-HE-Meta: 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 Yb4AtKGs gZkEyY4y0hBECWT/g0xshlv9qgmM+yALs+Bhrk1x3Yc3m+nOKCB6klVhewIBF5N7Oi2bAJVp1mG1/9pzc43Ja0Efj+oRcgSJruwkblJBMFtCJvpxU0e4n+qjBjua0OZPLztwmaEkAi+6IVuUWD6cD1XO250/HNwDt+RHbtop9LlbKNnVN+3BQnrKlWlfhWzZrrU04BpFLzMx91yVbXYeVuY5IjlOoWGgGrwxtcadDYJ6ipJIiIlYqVJ05A2q/k7RHFPUUxPoFCTDKRJKAGKFNFqKiRilRLgo0w8ilxMWEPKadiwgFLb8Vkdq5gaS8ybFiT0ghkc9YIzqBw3s= 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: > On Feb 2, 2026, at 23:56, Kiryl Shutsemau wrote: > > With the upcoming changes to HVO, a single page of tail struct pages > will be shared across all huge pages of the same order on a node. Since > huge pages on the same node may belong to different zones, the zone > information stored in shared tail page flags would be incorrect. > > Always fetch zone information from the head page, which has unique and > correct zone flags for each compound page. > > Signed-off-by: Kiryl Shutsemau > Acked-by: Zi Yan Acked-by: Muchun Song