From: kernel test robot <lkp@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: oe-kbuild-all@lists.linux.dev,
David Hildenbrand <david@kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>,
mm-commits@vger.kernel.org,
Muchun Song <songmuchun@bytedance.com>
Subject: [akpm-mm:mm-new 358/388] mm/sparse-vmemmap.c:507:48: error: implicit declaration of function 'device_zone'; did you mean 'device_move'?
Date: Thu, 10 Sep 2026 22:31:47 +0800 [thread overview]
Message-ID: <202609102250.lIycVv3n-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head: cf558a250cf4475a8936902b8978fbb6c61016f8
commit: dd35ca2f2cac9d6439a2ba2f523b98b5a9a9f8f5 [358/388] mm-sparse-vmemmap-switch-device-dax-to-shared-tail-vmemmap-pages-fix
config: s390-randconfig-r121-20260910 (https://download.01.org/0day-ci/archive/20260910/202609102250.lIycVv3n-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 13.4.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260910/202609102250.lIycVv3n-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609102250.lIycVv3n-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
mm/sparse-vmemmap.c: In function 'vmemmap_populate_compound_pages':
>> mm/sparse-vmemmap.c:507:48: error: implicit declaration of function 'device_zone'; did you mean 'device_move'? [-Werror=implicit-function-declaration]
507 | page = vmemmap_shared_tail_page(order, device_zone(node));
| ^~~~~~~~~~~
| device_move
>> mm/sparse-vmemmap.c:507:48: warning: passing argument 2 of 'vmemmap_shared_tail_page' makes pointer from integer without a cast [-Wint-conversion]
507 | page = vmemmap_shared_tail_page(order, device_zone(node));
| ^~~~~~~~~~~~~~~~~
| |
| int
mm/sparse-vmemmap.c:172:78: note: expected 'struct zone *' but argument is of type 'int'
172 | struct page __ref *vmemmap_shared_tail_page(unsigned int order, struct zone *zone)
| ~~~~~~~~~~~~~^~~~
cc1: some warnings being treated as errors
vim +507 mm/sparse-vmemmap.c
4917f55b4ef963 Joao Martins 2022-04-28 494
4917f55b4ef963 Joao Martins 2022-04-28 495 static int __meminit vmemmap_populate_compound_pages(unsigned long start_pfn,
4917f55b4ef963 Joao Martins 2022-04-28 496 unsigned long start,
4917f55b4ef963 Joao Martins 2022-04-28 497 unsigned long end, int node,
4917f55b4ef963 Joao Martins 2022-04-28 498 struct dev_pagemap *pgmap)
4917f55b4ef963 Joao Martins 2022-04-28 499 {
4917f55b4ef963 Joao Martins 2022-04-28 500 unsigned long size, addr;
4917f55b4ef963 Joao Martins 2022-04-28 501 pte_t *pte;
4917f55b4ef963 Joao Martins 2022-04-28 502 int rc;
d1d11861d8a018 Muchun Song 2026-09-08 503 unsigned long flags = VMEMMAP_POPULATE_DAX;
8fbaacc4a64bd1 Muchun Song 2026-09-08 504 struct page *page;
8fbaacc4a64bd1 Muchun Song 2026-09-08 505 unsigned int order = pfn_to_section_order(start_pfn);
4917f55b4ef963 Joao Martins 2022-04-28 506
8fbaacc4a64bd1 Muchun Song 2026-09-08 @507 page = vmemmap_shared_tail_page(order, device_zone(node));
8fbaacc4a64bd1 Muchun Song 2026-09-08 508 if (!page)
4917f55b4ef963 Joao Martins 2022-04-28 509 return -ENOMEM;
4917f55b4ef963 Joao Martins 2022-04-28 510
8fbaacc4a64bd1 Muchun Song 2026-09-08 511 if (reuse_compound_section(start_pfn, pgmap))
4917f55b4ef963 Joao Martins 2022-04-28 512 return vmemmap_populate_range(start, end, node, NULL,
8fbaacc4a64bd1 Muchun Song 2026-09-08 513 page_to_pfn(page), flags);
4917f55b4ef963 Joao Martins 2022-04-28 514
8fbaacc4a64bd1 Muchun Song 2026-09-08 515 size = min(end - start, (1UL << order) * sizeof(struct page));
4917f55b4ef963 Joao Martins 2022-04-28 516 for (addr = start; addr < end; addr += size) {
55896f935a60b9 Gautam Menghani 2022-06-12 517 unsigned long next, last = addr + size;
4917f55b4ef963 Joao Martins 2022-04-28 518
4917f55b4ef963 Joao Martins 2022-04-28 519 /* Populate the head page vmemmap page */
d1d11861d8a018 Muchun Song 2026-09-08 520 pte = vmemmap_populate_address(addr, node, NULL, -1, flags);
4917f55b4ef963 Joao Martins 2022-04-28 521 if (!pte)
4917f55b4ef963 Joao Martins 2022-04-28 522 return -ENOMEM;
4917f55b4ef963 Joao Martins 2022-04-28 523
4917f55b4ef963 Joao Martins 2022-04-28 524 /* Populate the tail pages vmemmap page */
4917f55b4ef963 Joao Martins 2022-04-28 525 next = addr + PAGE_SIZE;
d1d11861d8a018 Muchun Song 2026-09-08 526 pte = vmemmap_populate_address(next, node, NULL, -1, flags);
4917f55b4ef963 Joao Martins 2022-04-28 527 if (!pte)
4917f55b4ef963 Joao Martins 2022-04-28 528 return -ENOMEM;
4917f55b4ef963 Joao Martins 2022-04-28 529
4917f55b4ef963 Joao Martins 2022-04-28 530 /*
8fbaacc4a64bd1 Muchun Song 2026-09-08 531 * Reuse the shared page for the rest of tail pages
ee65728e103bb7 Mike Rapoport 2022-06-27 532 * See layout diagram in Documentation/mm/vmemmap_dedup.rst
4917f55b4ef963 Joao Martins 2022-04-28 533 */
4917f55b4ef963 Joao Martins 2022-04-28 534 next += PAGE_SIZE;
4917f55b4ef963 Joao Martins 2022-04-28 535 rc = vmemmap_populate_range(next, last, node, NULL,
8fbaacc4a64bd1 Muchun Song 2026-09-08 536 page_to_pfn(page), flags);
4917f55b4ef963 Joao Martins 2022-04-28 537 if (rc)
4917f55b4ef963 Joao Martins 2022-04-28 538 return -ENOMEM;
4917f55b4ef963 Joao Martins 2022-04-28 539 }
4917f55b4ef963 Joao Martins 2022-04-28 540
4917f55b4ef963 Joao Martins 2022-04-28 541 return 0;
2beea70a3edc03 Joao Martins 2022-04-28 542 }
2beea70a3edc03 Joao Martins 2022-04-28 543
:::::: The code at line 507 was first introduced by commit
:::::: 8fbaacc4a64bd1bfbfb11bfb48b5db3f4943cbd7 mm/sparse-vmemmap: switch device DAX to shared tail vmemmap pages
:::::: TO: Muchun Song <songmuchun@bytedance.com>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2026-09-10 14:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 14:31 kernel test robot [this message]
2026-09-10 15:16 ` [akpm-mm:mm-new 358/388] mm/sparse-vmemmap.c:507:48: error: implicit declaration of function 'device_zone'; did you mean 'device_move'? Suren Baghdasaryan
2026-09-10 15:22 ` Suren Baghdasaryan
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