[davidhildenbrand:hugetlb_unshare 7/8] mm/rmap.c:1877:24: error: use of undeclared identifier 'range'

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

tree:   https://github.com/davidhildenbrand/linux hugetlb_unshare
head:   f73f34e9b553d94cf3030e2674fbf2dab619181a
commit: b9189040ca4a05c8025ecff5b70a7895018d34e5 [7/8] mm/rmap: factor out PMD table unsharing into try_to_unshare_hugetlb_pmd_table()
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251120/202511202119.DaZbZygy-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251120/202511202119.DaZbZygy-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/202511202119.DaZbZygy-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/rmap.c:1873:31: error: use of undeclared identifier 'tlb'
    1873 |         unshared = huge_pmd_unshare(&tlb, vma, address);
         |                                      ^
>> mm/rmap.c:1877:24: error: use of undeclared identifier 'range'
    1877 |                 flush_tlb_range(vma, range.start, range.end);
         |                                      ^
   mm/rmap.c:1877:37: error: use of undeclared identifier 'range'
    1877 |                 flush_tlb_range(vma, range.start, range.end);
         |                                                   ^
   3 errors generated.


vim +/range +1877 mm/rmap.c

  1848	
  1849	static bool try_to_unshare_hugetlb_pmd_table(struct vm_area_struct *vma,
  1850			unsigned long address, enum ttu_flags flags,
  1851			struct page_vma_mapped_walk *pvmw, bool *ret)
  1852	{
  1853		bool unshared;
  1854	
  1855		if (!IS_ENABLED(CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING))
  1856			return false;
  1857	
  1858		/*
  1859		* To call huge_pmd_unshare, i_mmap_rwsem must be held in write mode.
  1860		* Callers needs to explicitly do this outside rmap routines.
  1861		*
  1862		* We also must hold hugetlb vma_lock in write mode. Lock order dictates
  1863		* acquiring vma_lock BEFORE i_mmap_rwsem. We can only try lock here
  1864		* and fail if unsuccessful.
  1865		*/
  1866		VM_WARN_ON_ONCE(!(flags & TTU_RMAP_LOCKED));
  1867		if (!hugetlb_vma_trylock_write(vma)) {
  1868			page_vma_mapped_walk_done(pvmw);
  1869			*ret = false;
  1870			return true;
  1871		}
  1872	
  1873		unshared = huge_pmd_unshare(&tlb, vma, address);
  1874		hugetlb_vma_unlock_write(vma);
  1875	
  1876		if (unshared) {
> 1877			flush_tlb_range(vma, range.start, range.end);
  1878			/*
  1879			* The PMD table was unmapped, consequently unmapping the
  1880			* folio.
  1881			*/
  1882			page_vma_mapped_walk_done(pvmw);
  1883		}
  1884		return unshared;
  1885	}
  1886	

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