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 69D2C2DA768 for ; Wed, 9 Sep 2026 01:45:52 +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=1788918353; cv=none; b=LH4ujjMg64fRrb05xLuyvb5nxSBwREgMBfjvV+zj5xEV0YigVX54M01D6xu0xyzPw0q4Tth8/3eU2NvWw3Q1drCIBk7qqbacUrYN6vek5WncG3l4aLiUhR+ArS4CrpuHZii1dnle+Uc1Hq/MyjNp/jYQyZX3NVpcHOMtyqbFtJ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788918353; c=relaxed/simple; bh=dDeH8dEzMm2npPLlvK4IFeYq2sHa/Qini4P+llFjmIM=; h=Date:To:From:Subject:Message-Id; b=BBSkX/uok5CEgvgqCD51Ax1hjoIz1hgVgvvcxQIDLs5xqVqpujuwoQGIgYrJcqrBYPh+pbP3dki87GTyFCKrYZbvm84pxAc0HQApZyfteidycmYN7VvU80gYTaZksWks21UKNkSM/Td3uEsZy2/ytspEZXed+XTGhHNEnuBZqTc= 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=JmjRh4ZQ; 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="JmjRh4ZQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EFDD11F00A3A; Wed, 9 Sep 2026 01:45:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1788918352; bh=kM47jOldLqauTqH2WzqekOyZWuSSP2AGHCXWMmbYsHI=; h=Date:To:From:Subject; b=JmjRh4ZQtE4mRiUYI6shRtVssLq64GlZj06KxhOYGYpxDMLwxwXEUAkVl/d3romlo pxOo7BbJXhNW9zY5igS0/IR02wqmVZ7hu3H/p5G5b+7ioblqqp+PF9VtNnRdMoa4p2 Hw6ZOBDPMDNLsmNsN1MZkKBM4QQKjC8ixCHVmcHU= Date: Tue, 08 Sep 2026 18:45:51 -0700 To: mm-commits@vger.kernel.org,rppt@kernel.org,rdunlap@infradead.org,qi.zheng@linux.dev,osalvador@suse.de,npiggin@gmail.com,mpe@ellerman.id.au,maddy@linux.ibm.com,ljs@kernel.org,david@kernel.org,corbet@lwn.net,songmuchun@bytedance.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments.patch added to mm-new branch Message-Id: <20260909014551.EFDD11F00A3A@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/sparse-vmemmap: drop unused section_nr_vmemmap_pages() arguments has been added to the -mm mm-new branch. Its filename is mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Muchun Song Subject: mm/sparse-vmemmap: drop unused section_nr_vmemmap_pages() arguments Date: Tue, 8 Sep 2026 11:03:34 +0800 section_nr_vmemmap_pages() no longer uses the altmap or pgmap arguments, so drop them from the helper and its callers. Link: https://lore.kernel.org/20260908030335.96549-11-songmuchun@bytedance.com Signed-off-by: Muchun Song Acked-by: Qi Zheng Cc: David Hildenbrand Cc: Jonathan Corbet Cc: Lorenzo Stoakes Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Mike Rapoport Cc: Nicholas Piggin Cc: Oscar Salvador Cc: Randy Dunlap Signed-off-by: Andrew Morton --- mm/sparse-vmemmap.c | 10 ++++------ mm/sparse.c | 3 +-- mm/sparse.h | 6 ++---- 3 files changed, 7 insertions(+), 12 deletions(-) --- a/mm/sparse.c~mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments +++ a/mm/sparse.c @@ -251,8 +251,7 @@ static void __init sparse_init_nid(int n nid, NULL, NULL); if (!map) panic("Failed to allocate memmap for section %lu\n", pnum); - memmap_boot_pages_add(section_nr_vmemmap_pages(pfn, PAGES_PER_SECTION, - NULL, NULL)); + memmap_boot_pages_add(section_nr_vmemmap_pages(pfn, PAGES_PER_SECTION)); sparse_init_one_section(__nr_to_section(pnum), pnum, map, usage, SECTION_IS_EARLY); usage = (void *)usage + mem_section_usage_size(); --- a/mm/sparse.h~mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments +++ a/mm/sparse.h @@ -70,12 +70,10 @@ static inline void sparse_sections_init( */ #ifdef CONFIG_SPARSEMEM_VMEMMAP void sparse_init_subsection_map(void); -int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages, - struct vmem_altmap *altmap, struct dev_pagemap *pgmap); +int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages); #else static inline void sparse_init_subsection_map(void) {} -static inline int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages, - struct vmem_altmap *altmap, struct dev_pagemap *pgmap) +static inline int section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages) { return DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE); } --- a/mm/sparse-vmemmap.c~mm-sparse-vmemmap-drop-unused-section_nr_vmemmap_pages-arguments +++ a/mm/sparse-vmemmap.c @@ -131,8 +131,7 @@ void __meminit vmemmap_verify(pte_t *pte start, end - 1); } -int __meminit section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages, - struct vmem_altmap *altmap, struct dev_pagemap *pgmap) +int __meminit section_nr_vmemmap_pages(unsigned long pfn, unsigned long nr_pages) { const struct mem_section *ms = __pfn_to_section(pfn); const int order = section_order(ms); @@ -637,7 +636,7 @@ static struct page * __meminit populate_ struct page *page = __populate_section_memmap(pfn, nr_pages, nid, altmap, pgmap); - memmap_pages_add(section_nr_vmemmap_pages(pfn, nr_pages, altmap, pgmap)); + memmap_pages_add(section_nr_vmemmap_pages(pfn, nr_pages)); return page; } @@ -648,7 +647,7 @@ static void depopulate_section_memmap(un unsigned long start = (unsigned long) pfn_to_page(pfn); unsigned long end = start + nr_pages * sizeof(struct page); - memmap_pages_add(-section_nr_vmemmap_pages(pfn, nr_pages, altmap, pgmap)); + memmap_pages_add(-section_nr_vmemmap_pages(pfn, nr_pages)); vmemmap_free(start, end, altmap); } @@ -658,8 +657,7 @@ static void free_map_bootmem(struct page unsigned long end = (unsigned long)(memmap + PAGES_PER_SECTION); unsigned long pfn = page_to_pfn(memmap); - memmap_boot_pages_add(-section_nr_vmemmap_pages(pfn, PAGES_PER_SECTION, - NULL, NULL)); + memmap_boot_pages_add(-section_nr_vmemmap_pages(pfn, PAGES_PER_SECTION)); vmemmap_free(start, end, NULL); } _ Patches currently in -mm which might be from songmuchun@bytedance.com are mm-sparse-relax-struct-mem_section-size-constraints.patch mm-sparse-vmemmap-rename-hvo-order-macros.patch mm-mm_init-skip-initializing-shared-vmemmap-tail-pages.patch mm-sparse-vmemmap-initialize-shared-tail-vmemmap-pages-on-allocation.patch mm-sparse-vmemmap-support-section-based-vmemmap-accounting.patch mm-mm_init-factor-out-pfn_to_zone.patch mm-sparse-vmemmap-move-helpers-ahead-of-future-callers.patch mm-sparse-vmemmap-support-section-based-vmemmap-optimization.patch mm-sparse-initialize-memory-sections-earlier.patch mm-hugetlb-switch-hugetlb-to-section-based-vmemmap-optimization.patch mm-sparse-vmemmap-remove-sparsemem_vmemmap_preinit-support.patch mm-sparse-inline-usemap-allocation-into-sparse_init_nid.patch mm-sparse-remove-section_map_size.patch 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