[openeuler:openEuler-1.0-LTS 18192/21544] mm/memory.c:1546:24: error: implicit declaration of function 'hugetlb_insert_hugepage_pte_by_pa'; did you mean 'hugetlb_insert__hugepage_pte_by_pa'?

[openeuler:openEuler-1.0-LTS 18192/21544] mm/memory.c:1546:24: error: implicit declaration of function 'hugetlb_insert_hugepage_pte_by_pa'; did you mean 'hugetlb_insert__hugepage_pte_by_pa'?

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   1f0983450549eeea71fb9333517330947a779262
commit: 18f49509eef01d1ee6ed81899298994f2f88dd2a [18192/21544] ascend: share_pool: Use remap_pfn_range to share kva to uva
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20240115/202401150459.fFshvuVQ-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240115/202401150459.fFshvuVQ-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/202401150459.fFshvuVQ-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/memory.c: In function 'vm_insert_page':
>> mm/memory.c:1546:24: error: implicit declaration of function 'hugetlb_insert_hugepage_pte_by_pa'; did you mean 'hugetlb_insert__hugepage_pte_by_pa'? [-Werror=implicit-function-declaration]
    1546 |                 return hugetlb_insert_hugepage_pte_by_pa(vma->vm_mm, addr,
         |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                        hugetlb_insert__hugepage_pte_by_pa
   cc1: some warnings being treated as errors


vim +1546 mm/memory.c

  1504	
  1505	/**
  1506	 * vm_insert_page - insert single page into user vma
  1507	 * @vma: user vma to map to
  1508	 * @addr: target user address of this page
  1509	 * @page: source kernel page
  1510	 *
  1511	 * This allows drivers to insert individual pages they've allocated
  1512	 * into a user vma.
  1513	 *
  1514	 * The page has to be a nice clean _individual_ kernel allocation.
  1515	 * If you allocate a compound page, you need to have marked it as
  1516	 * such (__GFP_COMP), or manually just split the page up yourself
  1517	 * (see split_page()).
  1518	 *
  1519	 * NOTE! Traditionally this was done with "remap_pfn_range()" which
  1520	 * took an arbitrary page protection parameter. This doesn't allow
  1521	 * that. Your vma protection will have to be set up correctly, which
  1522	 * means that if you want a shared writable mapping, you'd better
  1523	 * ask for a shared writable mapping!
  1524	 *
  1525	 * The page does not need to be reserved.
  1526	 *
  1527	 * Usually this function is called from f_op->mmap() handler
  1528	 * under mm->mmap_sem write-lock, so it can change vma->vm_flags.
  1529	 * Caller must set VM_MIXEDMAP on vma if it wants to call this
  1530	 * function from other places, for example from page-fault handler.
  1531	 */
  1532	int vm_insert_page(struct vm_area_struct *vma, unsigned long addr,
  1533				struct page *page)
  1534	{
  1535		if (addr < vma->vm_start || addr >= vma->vm_end)
  1536			return -EFAULT;
  1537		if (!page_count(page))
  1538			return -EINVAL;
  1539		if (!(vma->vm_flags & VM_MIXEDMAP)) {
  1540			BUG_ON(down_read_trylock(&vma->vm_mm->mmap_sem));
  1541			BUG_ON(vma->vm_flags & VM_PFNMAP);
  1542			vma->vm_flags |= VM_MIXEDMAP;
  1543		}
  1544	
  1545		if (sp_check_hugepage(page))
> 1546			return hugetlb_insert_hugepage_pte_by_pa(vma->vm_mm, addr,
  1547						vma->vm_page_prot, page_to_phys(page));
  1548		else
  1549			return insert_page(vma, addr, page, vma->vm_page_prot);
  1550	}
  1551	EXPORT_SYMBOL(vm_insert_page);
  1552	

-- 
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https://github.com/intel/lkp-tests/wiki