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Sat, 10 Jan 2026 12:18:09 +0800 (CST) Received: from dggpemf100008.china.huawei.com (unknown [7.185.36.138]) by mail.maildlp.com (Postfix) with ESMTPS id 20DF24056D; Sat, 10 Jan 2026 12:21:24 +0800 (CST) Received: from localhost.localdomain (10.50.87.83) by dggpemf100008.china.huawei.com (7.185.36.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Sat, 10 Jan 2026 12:21:23 +0800 From: Kefeng Wang To: Andrew Morton , David Hildenbrand , Oscar Salvador , Muchun Song , CC: , , Zi Yan , Vlastimil Babka , Brendan Jackman , Johannes Weiner , Matthew Wilcox , Kefeng Wang Subject: [PATCH mm-new 0/3] mm: accelerate gigantic folio allocation Date: Sat, 10 Jan 2026 12:21:08 +0800 Message-ID: <20260110042111.1541894-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.50.87.83] X-ClientProxiedBy: kwepems100001.china.huawei.com (7.221.188.238) To dggpemf100008.china.huawei.com (7.185.36.138) X-Rspam-User: X-Stat-Signature: 7xteeffhjpo6w3ftfs838dx6eihp9eok X-Rspamd-Queue-Id: 3C03518000B X-Rspamd-Server: rspam04 X-HE-Tag: 1768018888-595940 X-HE-Meta: U2FsdGVkX1+12UulYgggog8apaJkNkoc4b3rcF9XokLBrMfcPFrh1rGq/zL8RAAn3gUgYHnog/uVOb6HwTwyqDnddhww4piwOyucZ22zsCWbUS501CBlsePYOzJHGHweAduU+bxtPJcGp1wPJcV+MFrk+2OWYBzhUD+/UigRPvdKJSAVeyHBKa62OBcVWhH6bm/8Gw9nQg/8g24C8nP86pyuY/aUy3dwdcQq4lQNsUw+yqI/FhR5jcJK34p+ReqL7waOGgqfyO9Wi096sfZHD4q2ELFXTAySucnouyqC2IXDovfY3E62BpknGvkp/2fHl9u5KOWpv+NdsP+BbXylMV/COqR1A36cJB/gt3wBieUwcSvnt1XwSQ43/Kvg1aZXg3aqpflWtFh9DFSoy5a0PHWPPjGZly54ng6lJXGbgGig4X2W7I3uLIinLOeawv1x8ZpfvEFKbcETqcJzvJNPxrN+xu1B5zH4zpmC4E22YpOR/14Oh+PXdIPX6F5+3g9OwxZMFaateMMtDqsN8WoEioJnVWxN7AGuO2BNaqhDGcDQNm+Q7rcc6XqXxn49nfDXYU1OgIgXJf6j4buBgNhYHjDUyIvbsdpv57tukNLhiL/Sh3wSrb6hbjtEruHQ47TiZEBX1hShftUpo07OQ2nIFFMlEwNaJYmKQz2yb0XLy+gfdTkT30zBNzqCRb4FF22vsU6XKmKA3vib00ilO7WzYhlKbA6lXS4osOFqzC72PJ0ge37lxmXjuZfrK+/GusWXzSoVfZ97fOF9kGyQ9owPbg+7JHjd5hQifIfFgnHKtZg+bshilFyx1Fomc5PI62vKYq1SyxPV9j6YRjqq6Rjx+xcpAaX4xBId/0rjvO2i8i4gfLJjOmoOji9LyhXhzt7DDHL2OgHh0hyXVNvJznTJWmxwA3vDULbtssycEBdAv2HUrAcYnNkJ3n7G9s6EXMRVVRhdMWw28hzRon0cemy UqgfarQA MRoJwKp3fcnaenVGZ2ZfyTUFLIvcZYFD8VKEZwem56BjbH3hiGMAqVRV5YykcYlt9FbJiRumpxv8jEZouYGYTyl7ackvotBlfWQeNjHTi5iDpvqyYM4ZEoyXJJ1TX8Gl1M6YPouMnalEW5TDo3QDndvr2z6j54+F1IgFovbGwNumcwcnx1lc5IhYt2SBMDh8jui3T8yc/18APHyLTVSQBOoyIGXT9hUW7vvhK3YhqLh0rbSUl1WW/05WU4pW0wQu2RqkS8uFDTDoeL/6eqSNeq9c0Le3j5ej65m3QiDhoXPaCd4pUd5syX7T/GS6rYWSV3sNKymSrk8jWZgIkhwutP45v6hYrjqEE+K0bJ5XcQnWrBs5KHJ9S92zTTw== 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: Optimize pfn_range_valid_contig() and replace_free_hugepage_folios() in alloc_contig_frozen_pages() to speed up gigantic folio allocation. The allocation time for 120×1G folios drops from 3.605s to 0.431s. --- This is part of [patch v2 0/8] mm: hugetlb: allocate frozen gigantic folio[1], and as suggested by David[2], reuses some logic from the has_unmovable_pages(). [1] https://lore.kernel.org/linux-mm/20250918132000.1951232-1-wangkefeng.wang@huawei.com/ [2] https://lore.kernel.org/linux-mm/17bd2977-6a04-402f-ae84-306167cd16d6@redhat.com/ Kefeng Wang (3): mm: page_alloc: optimize pfn_range_valid_contig() mm: hugetlb: optimize replace_free_hugepage_folios() mm: hugetlb_cma: optimize hugetlb_cma_alloc_frozen_folio() include/linux/page-isolation.h | 2 + mm/hugetlb.c | 53 +++++++--- mm/hugetlb_cma.c | 5 +- mm/page_alloc.c | 25 ++--- mm/page_isolation.c | 187 +++++++++++++++++---------------- 5 files changed, 154 insertions(+), 118 deletions(-) -- 2.27.0