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Mon, 12 Jan 2026 23:07:00 +0800 (CST) Received: from dggpemf100008.china.huawei.com (unknown [7.185.36.138]) by mail.maildlp.com (Postfix) with ESMTPS id 71A654036C; Mon, 12 Jan 2026 23:10:21 +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; Mon, 12 Jan 2026 23:10:20 +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 resend 0/5] mm: accelerate gigantic folio allocation Date: Mon, 12 Jan 2026 23:09:49 +0800 Message-ID: <20260112150954.1802953-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.50.87.83] X-ClientProxiedBy: kwepems100002.china.huawei.com (7.221.188.206) To dggpemf100008.china.huawei.com (7.185.36.138) X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 28CDD1C0002 X-Rspam-User: X-Stat-Signature: r8ht1jeykri9d86hfsof64qi8qt76cew X-HE-Tag: 1768230626-438164 X-HE-Meta: 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 pNBHUCgi 82o6bJYE/EwIXakcrBPSVWLOea9MkAKxkTh/GVg9GREvjkNXTIbv8XXpNU1vh6fdRZKFHRet96Wq11mLK/fISm2+JrBA1hK8CvxdebMMxDx8PP0mpBld9kGijMTHihAOkHHlKNj9dW3G2IuKhN/E/BO8dy/iAMlzaDiOps7FKbhmZIu9AYizbDKdkdUB6THduqajTiRfhZ0Ma7y2r8W+u21vMGzBfBL/d7tZs/XaR+d/wrwhboxeEacS80Cs5Z8fji0M7NEf0FpmlZEgIDC0t8TWNSvqnaTfYs5baqG8ZaMC0276sNiAe9+SYHfw1Oaezyfh3R8mcp+YIhQLQ/yrQ6wXGFmpadaY4i6KZPP17v2avB/yevlgqxhLE1n5uN8qYTCzoN0OmvMN1FaABUz7Ezjf+Rd9P4/ULgI3UJdwv9yQS938= 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. resend: - no function changes, - split out the page_is_unmovable() into a separate patch, per Andrew - mark two global values with __ro_after_init in patch5 --- 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 (5): mm: page_isolation: introduce page_is_unmovable() mm: page_alloc: optimize pfn_range_valid_contig() mm: hugetlb: optimize replace_free_hugepage_folios() mm: hugetlb_cma: optimize hugetlb_cma_alloc_frozen_folio() mm: hugetlb_cma: mark hugetlb_cma{_only} as __ro_after_init include/linux/page-isolation.h | 2 + mm/hugetlb.c | 54 +++++++--- mm/hugetlb_cma.c | 9 +- mm/page_alloc.c | 25 ++--- mm/page_isolation.c | 187 +++++++++++++++++---------------- 5 files changed, 157 insertions(+), 120 deletions(-) -- 2.27.0