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GET /api/1.2/patches/2219932/?format=api
{ "id": 2219932, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2219932/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260405125240.2558577-8-songmuchun@bytedance.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.2/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260405125240.2558577-8-songmuchun@bytedance.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260405125240.2558577-8-songmuchun@bytedance.com/", "date": "2026-04-05T12:51:58", "name": "[07/49] mm/mm_init: use pageblock_migratetype_init_range() in deferred_free_pages()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "034956c1fcf1453a12eff2773203d2a96213a5b0", "submitter": { "id": 78930, "url": "http://patchwork.ozlabs.org/api/1.2/people/78930/?format=api", "name": "Muchun Song", "email": "songmuchun@bytedance.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260405125240.2558577-8-songmuchun@bytedance.com/mbox/", "series": [ { "id": 498783, "url": "http://patchwork.ozlabs.org/api/1.2/series/498783/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498783", "date": "2026-04-05T12:51:51", "name": "mm: Generalize vmemmap optimization for DAX and HugeTLB", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498783/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219932/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219932/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-19337-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bytedance.com header.i=@bytedance.com\n header.a=rsa-sha256 header.s=google header.b=a4joPc1O;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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Howlett\" <Liam.Howlett@oracle.com>,\n\tVlastimil Babka <vbabka@kernel.org>,\n\tMike Rapoport <rppt@kernel.org>,\n\tSuren Baghdasaryan <surenb@google.com>,\n\tMichal Hocko <mhocko@suse.com>,\n\tNicholas Piggin <npiggin@gmail.com>,\n\tChristophe Leroy <chleroy@kernel.org>,\n\taneesh.kumar@linux.ibm.com,\n\tjoao.m.martins@oracle.com,\n\tlinux-mm@kvack.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\tMuchun Song <songmuchun@bytedance.com>", "Subject": "[PATCH 07/49] mm/mm_init: use pageblock_migratetype_init_range() in\n deferred_free_pages()", "Date": "Sun, 5 Apr 2026 20:51:58 +0800", "Message-Id": "<20260405125240.2558577-8-songmuchun@bytedance.com>", "X-Mailer": "git-send-email 2.20.1", "In-Reply-To": "<20260405125240.2558577-1-songmuchun@bytedance.com>", "References": "<20260405125240.2558577-1-songmuchun@bytedance.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Simplify deferred_free_pages by replacing the duplicate loops for\ninitializing pageblock migratetype with a call to\npageblock_migratetype_init_range to simplify the code.\n\nSigned-off-by: Muchun Song <songmuchun@bytedance.com>\n---\n mm/mm_init.c | 13 ++++---------\n 1 file changed, 4 insertions(+), 9 deletions(-)", "diff": "diff --git a/mm/mm_init.c b/mm/mm_init.c\nindex 4936ca78966c..a92c5053f63d 100644\n--- a/mm/mm_init.c\n+++ b/mm/mm_init.c\n@@ -1974,13 +1974,12 @@ static void __init deferred_free_pages(unsigned long pfn,\n \tif (!nr_pages)\n \t\treturn;\n \n+\tpageblock_migratetype_init_range(pfn, nr_pages, MIGRATE_MOVABLE);\n+\n \tpage = pfn_to_page(pfn);\n \n \t/* Free a large naturally-aligned chunk if possible */\n \tif (nr_pages == MAX_ORDER_NR_PAGES && IS_MAX_ORDER_ALIGNED(pfn)) {\n-\t\tfor (i = 0; i < nr_pages; i += pageblock_nr_pages)\n-\t\t\tinit_pageblock_migratetype(page + i, MIGRATE_MOVABLE,\n-\t\t\t\t\tfalse);\n \t\t__free_pages_core(page, MAX_PAGE_ORDER, MEMINIT_EARLY);\n \t\treturn;\n \t}\n@@ -1988,12 +1987,8 @@ static void __init deferred_free_pages(unsigned long pfn,\n \t/* Accept chunks smaller than MAX_PAGE_ORDER upfront */\n \taccept_memory(PFN_PHYS(pfn), nr_pages * PAGE_SIZE);\n \n-\tfor (i = 0; i < nr_pages; i++, page++, pfn++) {\n-\t\tif (pageblock_aligned(pfn))\n-\t\t\tinit_pageblock_migratetype(page, MIGRATE_MOVABLE,\n-\t\t\t\t\tfalse);\n-\t\t__free_pages_core(page, 0, MEMINIT_EARLY);\n-\t}\n+\tfor (i = 0; i < nr_pages; i++)\n+\t\t__free_pages_core(page + i, 0, MEMINIT_EARLY);\n }\n \n /* Completion tracking for deferred_init_memmap() threads */\n", "prefixes": [ "07/49" ] }