From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38DCE36A340 for ; Thu, 10 Sep 2026 23:00:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789081257; cv=none; b=hYHFgWcC6HqqMasASi+ZCRPYqTK3Zs1M5PdsC9jNm8REs2iLcLPtCevycfY8IozQT+L0Xe6Lqb1+5w+UblpRZcJnvFWpU7lowynI9UMDynCIgPgeMLAb0zDMVrbimjlqjJB/6e78aBqVGv3l8yKDM93rBh+9ycGEiIZ6j4Y0zBM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789081257; c=relaxed/simple; bh=zmzgG1GgO3p1WkRmSPrq/8dlVG5zVkk5yhPzTBMtAFQ=; h=Date:To:From:Subject:Message-Id; b=A0qmEJFEdguYg5hVGtZscxEpzonU+NYcYFRbtGyBIK3vQ2ExzVrAYaI/tRx6jWjGBOS4P35HQkewMoA6e1AisRCiI0X++Qfgc5MRGKC8qNE0H+cynSVxaYa6HQttIpVk53hTj6JNgjzkkzJP48ts4PrPAa4khH0lCaTdNP70PYU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=Qm6tB8IY; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Qm6tB8IY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C97B91F00893; Thu, 10 Sep 2026 23:00:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789081254; bh=YZw2QENgiaKVUI3d9EhpWSOLFNQgurBGW7odGbiCGfA=; h=Date:To:From:Subject; b=Qm6tB8IYeWj8s/SPoHV1kAnHsgG9uIohswRZnkPSKP57ua67eG0sMlySDVhdbuhbI 2/yLEI0zExhmPgMfRhbUNVPTH1PhK6ycs/Ublnexm0u4dVSh6g9F9G7KI7uBWnnD5/ zGnF+7a1HgPKMnQ2iKyREyJU2wV6sgH1CLh3IWSI= Date: Thu, 10 Sep 2026 16:00:54 -0700 To: mm-commits@vger.kernel.org,songmuchun@bytedance.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-sparse-remove-section_map_size.patch removed from -mm tree Message-Id: <20260910230054.C97B91F00893@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/sparse: remove section_map_size() has been removed from the -mm tree. Its filename was mm-sparse-remove-section_map_size.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Muchun Song Subject: mm/sparse: remove section_map_size() Date: Tue, 25 Aug 2026 16:46:04 +0800 section_map_size() no longer provides any shared logic. After the sparse-vmemmap changes, its only remaining user is the !CONFIG_SPARSEMEM_VMEMMAP path in __populate_section_memmap(), which can compute the size inline with PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION). Remove section_map_size() and inline the remaining calculation. Link: https://lore.kernel.org/20260825084608.47437-14-songmuchun@bytedance.com Signed-off-by: Muchun Song Acked-by: Mike Rapoport (Microsoft) Acked-by: David Hildenbrand (Arm) Cc: David Laight Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Oscar Salvador Cc: Qi Zheng Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- include/linux/mm.h | 1 - mm/sparse.c | 15 ++------------- 2 files changed, 2 insertions(+), 14 deletions(-) --- a/include/linux/mm.h~mm-sparse-remove-section_map_size +++ a/include/linux/mm.h @@ -5140,7 +5140,6 @@ static inline void print_vma_addr(char * } #endif -unsigned long section_map_size(void); struct page * __populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap, struct dev_pagemap *pgmap); --- a/mm/sparse.c~mm-sparse-remove-section_map_size +++ a/mm/sparse.c @@ -209,23 +209,12 @@ void __init sparse_sections_init(void) memory_present(nid, start, end); } -#ifdef CONFIG_SPARSEMEM_VMEMMAP -unsigned long __init section_map_size(void) -{ - return ALIGN(sizeof(struct page) * PAGES_PER_SECTION, PMD_SIZE); -} - -#else -unsigned long __init section_map_size(void) -{ - return PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION); -} - +#ifndef CONFIG_SPARSEMEM_VMEMMAP struct page __init *__populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap, struct dev_pagemap *pgmap) { - unsigned long size = section_map_size(); + unsigned long size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION); return memmap_alloc(size, size, __pa(MAX_DMA_ADDRESS), nid, false); } _ Patches currently in -mm which might be from songmuchun@bytedance.com are mm-hugetlb-remove-huge_bootmem_hvo.patch mm-hugetlb-remove-huge_bootmem_cma.patch mm-hugetlb-localize-struct-huge_bootmem_page.patch mm-hugetlb-localize-huge_bootmem_zones_valid.patch mm-sparse-vmemmap-introduce-config_sparsemem_vmemmap_optimization.patch mm-sparse-vmemmap-factor-out-shared-vmemmap-tail-page-allocation.patch mm-sparse-vmemmap-open-code-init_compound_tail.patch mm-sparse-vmemmap-prepare-dax-vmemmap-population-for-section-orders.patch mm-sparse-vmemmap-set-section-order-for-device-dax.patch mm-sparse-vmemmap-switch-device-dax-to-shared-tail-vmemmap-pages.patch mm-sparse-vmemmap-move-hvo-helpers-to-a-public-header.patch powerpc-mm-switch-device-dax-to-shared-tail-vmemmap-pages.patch mm-sparse-vmemmap-drop-the-extra-tail-page-from-device-dax-reservation.patch mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments.patch documentation-mm-update-dax-vmemmap-deduplication-docs.patch