Hi Muhammad,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20221103]
[also build test ERROR on v6.1-rc3]
[cannot apply to shuah-kselftest/next linus/master v6.1-rc3 v6.1-rc2 v6.1-rc1]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Muhammad-Usama-Anjum/Implement-IOCTL-to-get-and-or-the-clear-info-about-PTEs/20221103-181024
patch link:    https://lore.kernel.org/r/20221103100736.2356351-3-usama.anjum%40collabora.com
patch subject: [PATCH v4 2/3] fs/proc/task_mmu: Implement IOCTL to get and/or the clear info about PTEs
config: s390-allyesconfig
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/ece21cda808bfbd0715c4a8bf691531d31569e09
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Muhammad-Usama-Anjum/Implement-IOCTL-to-get-and-or-the-clear-info-about-PTEs/20221103-181024
        git checkout ece21cda808bfbd0715c4a8bf691531d31569e09
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   fs/proc/task_mmu.c: In function 'pagemap_scan_pmd_entry':
>> fs/proc/task_mmu.c:1897:17: error: implicit declaration of function 'flush_tlb_mm_range'; did you mean 'flush_tlb_range'? [-Werror=implicit-function-declaration]
    1897 |                 flush_tlb_mm_range(vma->vm_mm, start, end, PAGE_SHIFT, false);
         |                 ^~~~~~~~~~~~~~~~~~
         |                 flush_tlb_range
   cc1: some warnings being treated as errors


vim +1897 fs/proc/task_mmu.c

  1835	
  1836	static int pagemap_scan_pmd_entry(pmd_t *pmd, unsigned long addr,
  1837					  unsigned long end, struct mm_walk *walk)
  1838	{
  1839		struct pagemap_scan_private *p = walk->private;
  1840		struct vm_area_struct *vma = walk->vma;
  1841		unsigned long start = addr;
  1842		int dirty, ret = 0;
  1843		spinlock_t *ptl;
  1844		pte_t *pte;
  1845		bool dirty_vma = (p->flags & PAGEMAP_NO_REUSED_REGIONS) ?
  1846				 (false) : (vma->vm_flags & VM_SOFTDIRTY);
  1847	
  1848		if ((walk->vma->vm_end < addr) || (p->max_pages && p->found_pages == p->max_pages))
  1849			return 0;
  1850	
  1851		end = min(end, walk->vma->vm_end);
  1852	
  1853		ptl = pmd_trans_huge_lock(pmd, vma);
  1854		if (ptl) {
  1855			if (dirty_vma || check_soft_dirty_pmd(vma, addr, pmd, false)) {
  1856				/*
  1857				 * Break huge page into small pages if operation needs to be performed is
  1858				 * on a portion of the huge page or the return buffer cannot store complete
  1859				 * data.
  1860				 */
  1861				if ((IS_CLEAR_OP(p->flags) && (end - addr < HPAGE_SIZE)) ||
  1862				    (IS_GET_OP(p->vec) && p->max_pages &&
  1863				    (p->found_pages + HPAGE_SIZE/PAGE_SIZE > p->max_pages))) {
  1864					spin_unlock(ptl);
  1865					split_huge_pmd(vma, pmd, addr);
  1866					goto process_smaller_pages;
  1867				} else {
  1868					dirty = check_soft_dirty_pmd(vma, addr, pmd, IS_CLEAR_OP(p->flags));
  1869					if (IS_GET_OP(p->vec))
  1870						add_to_out(dirty_vma || dirty, vma->vm_file,
  1871							   pmd_present(*pmd), is_swap_pmd(*pmd), p,
  1872							   addr, (end - addr)/PAGE_SIZE);
  1873				}
  1874			}
  1875			spin_unlock(ptl);
  1876			return 0;
  1877		}
  1878	
  1879	process_smaller_pages:
  1880		if (pmd_trans_unstable(pmd))
  1881			return 0;
  1882	
  1883		pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
  1884		for (; addr < end && !ret; pte++, addr += PAGE_SIZE) {
  1885			dirty = check_soft_dirty(vma, addr, pte, IS_CLEAR_OP(p->flags));
  1886			if (IS_GET_OP(p->vec)) {
  1887				ret = add_to_out(dirty_vma || dirty, vma->vm_file, pte_present(*pte),
  1888						 is_swap_pte(*pte), p, addr, 1);
  1889				if (p->max_pages && (p->found_pages == p->max_pages))
  1890					break;
  1891			}
  1892		}
  1893		pte_unmap_unlock(pte - 1, ptl);
  1894		cond_resched();
  1895	
  1896		if (IS_CLEAR_OP(p->flags))
> 1897			flush_tlb_mm_range(vma->vm_mm, start, end, PAGE_SHIFT, false);
  1898	
  1899		return 0;
  1900	}
  1901	

-- 
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