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 4B3CE374E73 for ; Thu, 17 Sep 2026 01:36:45 +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=1789609006; cv=none; b=MaPqD8sGib0ajQcuMd6SI+1bANXRIimZiDwk8SP8YGXazdTw+glmMprKuKgkImRCIp3o8VXtX7lidQIHtYz7XqVUBrXFWbKwqqlYHf5k9C3XhqD1/YUkJxOmY6kZDnM2SE/KwFOAgzGEIGpxnrHzItVHyt0b1VvAAKzJIYeQP0Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789609006; c=relaxed/simple; bh=12wtijEN+63V+MOCfKotmpe8RHOYTHx6DiJg6jQXVIQ=; h=Date:To:From:Subject:Message-Id; b=gMlDnYgtp3eGAaS9FMYujOqIb9AuRqGpo41KzvwlxmERa0/DA0uv4ZxIlNsB66N84L5vNHhRxG9WF9/DHinnvMn9DlA9n75ssPkPIx+sV0WhzACLbEXUdN6YRpTYXFRITTNR647tBf6VwF5BchLNk8qoDgGKivs54nFK7a7RHCo= 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=Y6yPQAbf; 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="Y6yPQAbf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2048C1F000FF; Thu, 17 Sep 2026 01:36:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789609005; bh=k+34h2D71wAfHcv0Suw1YKwpJzIS1Lyr8I2J9HsH9tQ=; h=Date:To:From:Subject; b=Y6yPQAbfclSYDBruJgs6rb0Y6S1pBg1izI6lgNxXgsJCiCvRH88UhStZvK+xGos39 4HosRqKHBwa8StfQvAkhcviU/++OV5tHZ5NrOvUjR6C23kKxYf58s+tWFtQprnOks5 hESJB81Zz1ARUX/PD1nv3L1oa0DbCEMROQavCGQs= Date: Wed, 16 Sep 2026 18:36:44 -0700 To: mm-commits@vger.kernel.org,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-unstable branch Message-Id: <20260917013645.2048C1F000FF@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-unstable 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-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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: Wed, 16 Sep 2026 14:43:40 +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/20260916064341.1825793-11-songmuchun@bytedance.com Signed-off-by: Muchun Song Signed-off-by: Andrew Morton Acked-by: Qi Zheng Cc: David Hildenbrand (Arm) Cc: Jonathan Corbet Cc: Lorenzo Stoakes Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Mike Rapoport (Microsoft) Cc: Nicholas Piggin Cc: Oscar Salvador Cc: Randy Dunlap --- 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 @@ -250,8 +250,7 @@ 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_compound_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_vmemmap_optimization.patch mm-sparse-vmemmap-introduce-config_vmemmap_optimization-fix.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-compound-page-orders.patch mm-sparse-vmemmap-set-compound-page-order-for-device-dax.patch mm-sparse-vmemmap-switch-device-dax-to-shared-tail-vmemmap-pages.patch mm-sparse-vmemmap-move-vmemmap-optimization-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