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Mon, 13 Oct 2025 21:40:15 +0800 (CST) Received: from dggpemf100008.china.huawei.com (unknown [7.185.36.138]) by mail.maildlp.com (Postfix) with ESMTPS id 0E9E3140279; Mon, 13 Oct 2025 21:40:34 +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, 13 Oct 2025 21:40:33 +0800 From: Kefeng Wang To: Andrew Morton , David Hildenbrand , Oscar Salvador , Muchun Song CC: , , Zi Yan , Vlastimil Babka , Brendan Jackman , Johannes Weiner , , Kefeng Wang Subject: [PATCH v3 0/6] mm: hugetlb: allocate frozen gigantic folio Date: Mon, 13 Oct 2025 21:38:48 +0800 Message-ID: <20251013133854.2466530-1-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: kwepems200002.china.huawei.com (7.221.188.68) To dggpemf100008.china.huawei.com (7.185.36.138) X-Rspamd-Server: rspam01 X-Stat-Signature: oaqtikws5xegq5oqhchthaz5d3erbg3d X-Rspam-User: X-Rspamd-Queue-Id: 844681A0006 X-HE-Tag: 1760362838-739152 X-HE-Meta: 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 /xg== 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: Introduce alloc_contig_frozen_pages() and cma_alloc_frozen_compound() which avoid atomic operation about page refcount, and then convert to allocate frozen gigantic folio by the new helpers in hugetlb to cleanup the alloc_gigantic_folio(). v3: - Fix built warn/err, found by lkp test - Address some David's comments, - Force on frozen part and drop the optimization part - Rename split_non_compound_pages() to __split_pages() - Adding back debug print/WARN_ON if no cma range found or the pfn range of page is not full match the cma range. v2: - Optimize gigantic folio allocation speed - Using HPAGE_PUD_ORDER in debug_vm_pgtable - Address some David's comments, - kill folio_alloc_gigantic() - add generic cma_alloc_frozen{_compound}() instead of cma_{alloc,free}_folio Kefeng Wang (6): mm: debug_vm_pgtable: add debug_vm_pgtable_free_huge_page() mm: page_alloc: add __split_page() mm: page_alloc: add alloc_contig_{range_frozen,frozen_pages}() mm: cma: add __cma_release() mm: cma: add cma_alloc_frozen{_compound}() mm: hugetlb: allocate frozen pages in alloc_gigantic_folio() include/linux/cma.h | 26 ++---- include/linux/gfp.h | 52 +++++------ mm/cma.c | 109 +++++++++++----------- mm/debug_vm_pgtable.c | 38 ++++---- mm/hugetlb.c | 58 +++--------- mm/hugetlb_cma.c | 27 +++--- mm/hugetlb_cma.h | 10 +-- mm/internal.h | 6 ++ mm/page_alloc.c | 204 ++++++++++++++++++++++++++++-------------- 9 files changed, 271 insertions(+), 259 deletions(-) -- 2.27.0