mm/filemap.c:2768:undefined reference to `is_raw_hwpoison_page_in_folio'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/intel-lab-lkp/linux/commits/Jane-Chu/mm-memory-failure-make-is_raw_hwpoison_page_in_hugepage-general-purpose/20260618-012902
head:   ad6812ce0c4c46ffdd13060f0251f31b3412017b
commit: 12e5a24644d326a21bd49526746156ea59e376c4 mm: factor out adjust_range_hwpoison() from hugetlbfs
date:   13 hours ago
config: s390-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260618/202606180853.3higmX1J-lkp@intel.com/config)
compiler: s390x-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260618/202606180853.3higmX1J-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/202606180853.3higmX1J-lkp@intel.com/

All errors (new ones prefixed by >>):

   s390x-linux-gnu-ld: mm/filemap.o: in function `adjust_range_hwpoison':
>> mm/filemap.c:2768:(.text+0x1df4): undefined reference to `is_raw_hwpoison_page_in_folio'
>> s390x-linux-gnu-ld: mm/filemap.c:2777:(.text+0x1e2e): undefined reference to `is_raw_hwpoison_page_in_folio'
   s390x-linux-gnu-ld: mm/filemap.c:2777:(.text+0x1e58): undefined reference to `is_raw_hwpoison_page_in_folio'
   s390x-linux-gnu-ld: mm/filemap.c:2777:(.text+0x1e92): undefined reference to `is_raw_hwpoison_page_in_folio'
   s390x-linux-gnu-ld: mm/filemap.c:2777:(.text+0x1eb4): undefined reference to `is_raw_hwpoison_page_in_folio'


vim +2768 mm/filemap.c

  2752	
  2753	/**
  2754	 * adjust_range_hwpoison - adjust clean readable range to avoid hwpoison.
  2755	 * @folio: folio that contains hwpoison(s).
  2756	 * @offset: bytes into the folio where subsequent read starts.
  2757	 * @bytes: number of bytes wish to read.
  2758	 *
  2759	 * Return: adjusted total number of bytes starting off @offset that can be
  2760	 * safely read from the @folio.
  2761	 */
  2762	size_t adjust_range_hwpoison(struct folio *folio, size_t offset,
  2763			size_t bytes)
  2764	{
  2765		struct page *page = folio_page(folio, offset / PAGE_SIZE);
  2766		size_t safe_bytes;
  2767	
> 2768		if (is_raw_hwpoison_page_in_folio(page))
  2769			return 0;
  2770	
  2771		/* Safe to read the remaining bytes in this page. */
  2772		safe_bytes = PAGE_SIZE - (offset % PAGE_SIZE);
  2773		page++;
  2774	
  2775		/* Check each remaining page as long as we are not done yet. */
  2776		for (; safe_bytes < bytes; safe_bytes += PAGE_SIZE, page++)
> 2777			if (is_raw_hwpoison_page_in_folio(page))
  2778				break;
  2779	
  2780		return min(safe_bytes, bytes);
  2781	}
  2782	EXPORT_SYMBOL_GPL(adjust_range_hwpoison);
  2783	

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