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Sun, 05 Apr 2026 05:54:05 -0700 (PDT) From: Muchun Song To: Andrew Morton , David Hildenbrand , Muchun Song , Oscar Salvador , Michael Ellerman , Madhavan Srinivasan Cc: Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Nicholas Piggin , Christophe Leroy , aneesh.kumar@linux.ibm.com, joao.m.martins@oracle.com, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Muchun Song Subject: [PATCH 07/49] mm/mm_init: use pageblock_migratetype_init_range() in 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: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Simplify deferred_free_pages by replacing the duplicate loops for initializing pageblock migratetype with a call to pageblock_migratetype_init_range to simplify the code. Signed-off-by: Muchun Song --- mm/mm_init.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/mm/mm_init.c b/mm/mm_init.c index 4936ca78966c..a92c5053f63d 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1974,13 +1974,12 @@ static void __init deferred_free_pages(unsigned long pfn, if (!nr_pages) return; + pageblock_migratetype_init_range(pfn, nr_pages, MIGRATE_MOVABLE); + page = pfn_to_page(pfn); /* Free a large naturally-aligned chunk if possible */ if (nr_pages == MAX_ORDER_NR_PAGES && IS_MAX_ORDER_ALIGNED(pfn)) { - for (i = 0; i < nr_pages; i += pageblock_nr_pages) - init_pageblock_migratetype(page + i, MIGRATE_MOVABLE, - false); __free_pages_core(page, MAX_PAGE_ORDER, MEMINIT_EARLY); return; } @@ -1988,12 +1987,8 @@ static void __init deferred_free_pages(unsigned long pfn, /* Accept chunks smaller than MAX_PAGE_ORDER upfront */ accept_memory(PFN_PHYS(pfn), nr_pages * PAGE_SIZE); - for (i = 0; i < nr_pages; i++, page++, pfn++) { - if (pageblock_aligned(pfn)) - init_pageblock_migratetype(page, MIGRATE_MOVABLE, - false); - __free_pages_core(page, 0, MEMINIT_EARLY); - } + for (i = 0; i < nr_pages; i++) + __free_pages_core(page + i, 0, MEMINIT_EARLY); } /* Completion tracking for deferred_init_memmap() threads */ -- 2.20.1