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Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , Kevin Brodsky Cc: linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260924-fix_split-v8-0-cba7359d882a@arm.com> <20260924-fix_split-v8-3-cba7359d882a@arm.com> From: Baolin Wang In-Reply-To: <20260924-fix_split-v8-3-cba7359d882a@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C77E940005 X-Stat-Signature: xkgwgyg33ykc1c3e76duwk3u1ge3zzdt X-Rspam-User: X-HE-Tag: 1790664333-246043 X-HE-Meta: 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 mwpEJwZy QUs7XDBTcCHWG56vyckMZSeDH3n1O6Ktm9Y/S7N8GeLxMvVyDf5YyhkeD5w+d9eE8fG6HpPE59ciGf58PURRkDMV9o8/3QUi8RTgQiTyqhEKloBt9Z994BKgXs6E6k69srnYpgGt6acvBc/aUPHtYpH8fNBiP2rdGgk3WW24Hb1pEhAN0VxPQKzEKaL50fdqn0gRpC5p5NhKL5wuMcvAzdG/hnyfD3aMn5P6E/yDj5wwXXJzRHjPg3Fagmfto/E+NJ0GRaZC8pcJdTj/tR3U9Gry4lrsdgwyzt+5Wn4Slba23iaGzxyIVsCflswG09AK7KtF/khIOy3idHJxIB3aJXuDiPFn1Im+MVZvAlr7L2pTwpYCEi128lQk/B25eIWarVOEKgeHeRMm2hftD8AVWi5YctFFyhzxV0wSjHllgsVzTYJa4LxuuNJDwaw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/25/26 3:11 AM, Yeoreum Yun wrote: > check_large_folios() only checks for large folios without distinguishing > between anonymous and file-backed huge pages. > > To add huge page type checking, integrate the huge page checks into > __check_huge(): > > 1. If hpage_size == pmd_pagesize, check PAGE_IS_HUGE instead of using > check_large_folios(), since only the mapping type matters. This > identifies PMD-mapped huge pages. > > 2. Otherwise, use check_large_folios() to detect large folios. This > covers mTHP cases. > > 3. Check the folio flags according to the huge page type. > > Suggested-by: David Hildenbrand (Arm) > Suggested-by: Zi Yan > Signed-off-by: Yeoreum Yun > --- LGTM, with nits from Sarthak addressed, Reviewed-by: Baolin Wang Tested-by: Baolin Wang