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 53F341F91F6 for ; Tue, 15 Sep 2026 04:22:37 +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=1789446158; cv=none; b=esDIHNrf8NsMyX+DEWnaV+7M2axqjWquYuyXybPFEmk9CqtE13BfXS79VuINCBij82KasKFFSl52l61OXhUv6+yk3iQxAZlkLPVKK27qeoWnLw9wD0ic7DUCRUjGxYrwyBUvveUgKTGiruhciSBPhGLjfsDArJsWMur/sn3Jics= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789446158; c=relaxed/simple; bh=t96IEX41Z05Hdicv0WHiMeVQFr6tUsGMyK7JYGWkDJs=; h=Date:To:From:Subject:Message-Id; b=SypjQw5xjcqNwPVEVFM/uxKImUuxbPnvMZkLjtwjW8Y8qLzPiuKNJ6bvLeSW9Ch+qKvuuuevYW1GHH/7Uy7Aacw1jhod2UEl1lgyAv8aYeUmKvkcflggVcSpMrupkjj0XgybKkwP1sXvD9E2ZZxA6uYS0Rr1yNiCNvGyAOOb54o= 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=fnEjiBzb; 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="fnEjiBzb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E173F1F00898; Tue, 15 Sep 2026 04:22:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789446157; bh=p9dwCvTG6XkKhpYLKAr7sAIpapTOIkVmd0IaeWl9eH8=; h=Date:To:From:Subject; b=fnEjiBzbkY4/rm23ceP5k7LOWY/hP4S5U9hx43KDeLKiPUNqqdIH6FysWpnWliSyD eq6f441MiQ1EsNRDEBMR5oUQkGj1q6SmB/uaHiJivNgAj3ObjWM8yT15xFUOYSzjiz zMMXgE4Eesi6uiqrST/H4o7HUpZriRMHZGuYZTHg= Date: Mon, 14 Sep 2026 21:22:36 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,rppt@kernel.org,muchun.song@linux.dev,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,david@kernel.org,chengkaitao@kylinos.cn,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-remove-unused-exact_nid-parameter-from-memmap_alloc.patch added to mm-new branch Message-Id: <20260915042236.E173F1F00898@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: remove unused exact_nid parameter from memmap_alloc() has been added to the -mm mm-new branch. Its filename is mm-remove-unused-exact_nid-parameter-from-memmap_alloc.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-unused-exact_nid-parameter-from-memmap_alloc.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: Kaitao Cheng Subject: mm: remove unused exact_nid parameter from memmap_alloc() Date: Mon, 14 Sep 2026 13:51:30 +0800 Commit ffe55393137c ("mm/sparse: remove sparse buffer pre-allocation mechanism") removed sparse_buffer_init(), which was the only caller of memmap_alloc() that passed true for exact_nid. All remaining callers pass false, leaving the exact-node allocation branch unreachable. Remove the exact_nid parameter and unconditionally use memblock_alloc_try_nid_raw(). This has no functional impact. Link: https://lore.kernel.org/20260914055130.44543-1-kaitao.cheng@linux.dev Signed-off-by: Kaitao Cheng Signed-off-by: Andrew Morton Acked-by: Muchun Song Cc: David Hildenbrand Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka --- mm/mm_init.c | 14 ++++---------- mm/mm_init.h | 4 ++-- mm/sparse-vmemmap.c | 2 +- mm/sparse.c | 2 +- 4 files changed, 8 insertions(+), 14 deletions(-) --- a/mm/mm_init.c~mm-remove-unused-exact_nid-parameter-from-memmap_alloc +++ a/mm/mm_init.c @@ -1606,7 +1606,7 @@ static void __init free_area_init_core(s } void __init *memmap_alloc(phys_addr_t size, phys_addr_t align, - phys_addr_t min_addr, int nid, bool exact_nid) + phys_addr_t min_addr, int nid) { void *ptr; @@ -1614,14 +1614,8 @@ void __init *memmap_alloc(phys_addr_t si * Kmemleak will explicitly scan mem_map by traversing all valid * `struct *page`,so memblock does not need to be added to the scan list. */ - if (exact_nid) - ptr = memblock_alloc_exact_nid_raw(size, align, min_addr, - MEMBLOCK_ALLOC_NOLEAKTRACE, - nid); - else - ptr = memblock_alloc_try_nid_raw(size, align, min_addr, - MEMBLOCK_ALLOC_NOLEAKTRACE, - nid); + ptr = memblock_alloc_try_nid_raw(size, align, min_addr, + MEMBLOCK_ALLOC_NOLEAKTRACE, nid); if (ptr && size > 0) page_init_poison(ptr, size); @@ -1649,7 +1643,7 @@ static void __init alloc_node_mem_map(st end = ALIGN(pgdat_end_pfn(pgdat), MAX_ORDER_NR_PAGES); size = (end - start) * sizeof(struct page); map = memmap_alloc(size, SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, - pgdat->node_id, false); + pgdat->node_id); if (!map) panic("Failed to allocate %ld bytes for node %d memory map\n", size, pgdat->node_id); --- a/mm/mm_init.h~mm-remove-unused-exact_nid-parameter-from-memmap_alloc +++ a/mm/mm_init.h @@ -31,8 +31,8 @@ static inline void clear_zone_contiguous void memblock_free_pages(unsigned long pfn, unsigned int order); -void *memmap_alloc(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, - int nid, bool exact_nid); +void *memmap_alloc(phys_addr_t size, phys_addr_t align, + phys_addr_t min_addr, int nid); void memmap_init_range(unsigned long size, int nid, unsigned long zone, unsigned long start_pfn, unsigned long zone_end_pfn, --- a/mm/sparse.c~mm-remove-unused-exact_nid-parameter-from-memmap_alloc +++ a/mm/sparse.c @@ -215,7 +215,7 @@ struct page __init *__populate_section_m { const unsigned long size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION); - return memmap_alloc(size, size, __pa(MAX_DMA_ADDRESS), nid, false); + return memmap_alloc(size, size, __pa(MAX_DMA_ADDRESS), nid); } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ --- a/mm/sparse-vmemmap.c~mm-remove-unused-exact_nid-parameter-from-memmap_alloc +++ a/mm/sparse-vmemmap.c @@ -62,7 +62,7 @@ void __ref *vmemmap_alloc_block(unsigned } return NULL; } else - return memmap_alloc(size, size, __pa(MAX_DMA_ADDRESS), node, false); + return memmap_alloc(size, size, __pa(MAX_DMA_ADDRESS), node); } static void * __meminit altmap_alloc_block_buf(unsigned long size, _ Patches currently in -mm which might be from chengkaitao@kylinos.cn are mm-hugetlb-use-hugetlb_vmemmap_optimizable-in-boolean-contexts.patch mm-page-flags-define-hwpoison-test-and-change-helpers-unconditionally.patch nvdimm-pmem-remove-test_and_clear_pmem_poison.patch mm-remove-unused-exact_nid-parameter-from-memmap_alloc.patch