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Tue, 10 Feb 2026 15:09:27 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id lgjHJydKi2kHCQAAD6G6ig (envelope-from ); Tue, 10 Feb 2026 15:09:27 +0000 Message-ID: <763984ad-1fd3-4264-8f11-509d6e1eeb0b@suse.cz> Date: Tue, 10 Feb 2026 16:09:27 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv6 03/17] mm: Rename the 'compound_head' field in the 'struct page' to 'compound_info' Content-Language: en-US To: Kiryl Shutsemau , Andrew Morton , Muchun Song , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden Cc: Oscar Salvador , Mike Rapoport , 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 References: <20260202155634.650837-1-kas@kernel.org> <20260202155634.650837-4-kas@kernel.org> From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Stat-Signature: pfyramf5gnurhgn3pz8wxmx1r78fos97 X-Rspamd-Queue-Id: C2D22180005 X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1770736169-65493 X-HE-Meta: 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 F4lP8DH1 GDRP8T6e3+szApDPHGgOYfzINWJommi/c6JRROmGfkF5nSMrqmVBPN8eGLe5TbOa2dc5ioSHGJEk9sfe1PZefRxc5bvpqoCPgTsYil69QtPj1N57CD1qFNCO5TvynDLgaLjD7YJKJ1WVd2eYS+SY3w0ysj4mtaN/m99VhfeB1mi1GfBvumCIXFtAoOo5CCnh7s3Q+jZCZk+m3IQWUfPANvk+eYWAe3ZA/s+UQKtxkqAP3CSjY+BEbXRFbTpjvpzwPuLfrPcLc687AX9SRlJqoLcQkULO+vrPKgkpl86qwrnzqcxkGwJQosv0mLW6tN7IZeGRb9a0n2w56DG0uu/4QOljxJT6n7x1VMvYwXlI2Eb7MngHmlvioE/MPXqhP7834eB6b 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 2/2/26 16:56, Kiryl Shutsemau wrote: > The 'compound_head' field in the 'struct page' encodes whether the page > is a tail and where to locate the head page. Bit 0 is set if the page is > a tail, and the remaining bits in the field point to the head page. > > As preparation for changing how the field encodes information about the > head page, rename the field to 'compound_info'. > > Signed-off-by: Kiryl Shutsemau > Reviewed-by: Muchun Song > Reviewed-by: Zi Yan Reviewed-by: Vlastimil Babka