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b=H5sOJ/AQVD4KQdyWWnwpvGbsCTZKl09ACof7WNuoWazmfL2kJlPFbD5heZfAYPIbz d2CnLYUMcjF0tIbpv8zNS4Qg1isPdfN474/nNE3Eulr9/zFc5gyKGxM8T33/oy367q 6fs1VzwFF7AGydtM9nWDqkQuQxSLFHXOZFF0ABPsCQZ44YHHvBaD7f+jyCx13Y8Npu EC/ISRF8qqpjKLGAUrmlvuTVz5ntYB1AURrL/xPiKqN0+TYLMb2W5us/8fIkpHwMrK uKicF1sG7SysotASG6r7gI5GHQStrqKlaklkU1b6PT+Xqp1rJG9ZuVVg16mXQ3J1HK Zf0C4zQ37KubQ== Message-ID: <7b88fdcb-6bd9-4eea-9174-81ab4763a0eb@kernel.org> Date: Fri, 6 Feb 2026 10:14:41 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv6 11/17] mm/hugetlb: Remove fake head pages To: Kiryl Shutsemau , Andrew Morton , Muchun Song , Matthew Wilcox , Usama Arif , Frank van der Linden Cc: 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 References: <20260202155634.650837-1-kas@kernel.org> <20260202155634.650837-12-kas@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Stat-Signature: r7q71ijb7jspwtdo4qutabh1h5ggzaza X-Rspamd-Queue-Id: 475EC140008 X-Rspam-User: X-HE-Tag: 1770369291-100127 X-HE-Meta: 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 pauEUqQi A0WeR5L6ZoNIj+yXMZFZvp4y+O8QO+4TCL3nazHbu+sA++3w0Lbx/DleefQdAacMNMOQHoEcoRL/uMyF0++7bWH7qkAcJiYF5AfpjcZqDGsJEyFm3QLeOOEuwKUdCK3rxD0gL32laH8Oa+3LDgU1Vu5FexuDyniZBL4i2N2IZkmzYzR+XUtmoaOJhT+txkoqH3CdtIAutI+U+VMKHi9eo8o5LKU9anbnnMwsTNStxAGuxrX3eJ6oqapQdz9Jl5gk+Xhxf 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: > -/* > - * Populate vmemmap pages HVO-style. The first page contains the head > - * page and needed tail pages, the other ones are mirrors of the first > - * page. > - */ > +static __meminit unsigned long vmemmap_get_tail(unsigned int order, int node) > +{ > + struct page *p, *tail; > + unsigned int idx; > + > + BUG_ON(order < VMEMMAP_TAIL_MIN_ORDER); > + BUG_ON(order > MAX_FOLIO_ORDER); No BUG_ON. -- Cheers, David