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charset=us-ascii Content-Disposition: inline Hi Xu, FYI, the error/warning still remains. tree: https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10 head: c55bd07f747cd457f58e5781279fa11a5fc0add1 commit: bd617fc27c23d34e76440e74b3834c287b878d07 [9/9] anolis: mm: support fast reflink config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20250408/202504081759.bcVX84ca-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/20250408/202504081759.bcVX84ca-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202504081759.bcVX84ca-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/memory.c: In function 'fr_apply_vma': >> mm/memory.c:5965:15: warning: unused variable 'pmd' [-Wunused-variable] 5965 | pmd_t pmd; | ^~~ vim +/pmd +5965 mm/memory.c 5956 5957 static void fr_apply_vma(struct vm_area_struct *vma) 5958 { 5959 struct mm_struct *mm = vma->vm_mm; 5960 unsigned long start = vma->vm_start; 5961 unsigned long end = vma->vm_end; 5962 unsigned long next; 5963 spinlock_t *pml; 5964 pmd_t *pmdp = NULL; > 5965 pmd_t pmd; 5966 bool applied = false; 5967 5968 do { 5969 next = pmd_addr_end(start, end); 5970 if (follow_pmd(mm, start, &pmdp)) 5971 continue; 5972 5973 pml = pmd_lock(mm, pmdp); 5974 if (pmd_huge(*pmdp)) { 5975 #ifdef CONFIG_FS_DAX_PMD 5976 if (!pmd_dirty(*pmdp) && !pmd_write(*pmdp)) 5977 goto unlock_pmd; 5978 5979 pmd = pmdp_invalidate(vma, start, pmdp); 5980 pmd = pmd_wrprotect(pmd); 5981 pmd = pmd_mkclean(pmd); 5982 set_pmd_at(mm, start, pmdp, pmd); 5983 unlock_pmd: 5984 #endif 5985 spin_unlock(pml); 5986 continue; 5987 } 5988 5989 if (pmd_none(*pmdp) || unlikely(pmd_bad(*pmdp))) { 5990 spin_unlock(pml); 5991 continue; 5992 } 5993 5994 if (IS_ALIGNED(start, PMD_SIZE) && (start + PMD_SIZE <= end)) { 5995 pmdp_set_tbl_wrprotect(mm, start, pmdp); 5996 flush_tlb_range(vma, start, start + PMD_SIZE); 5997 applied = true; 5998 spin_unlock(pml); 5999 continue; 6000 } else { 6001 spin_unlock(pml); 6002 fr_apply_pte_range(vma, pmdp, start, next); 6003 flush_tlb_range(vma, start, next); 6004 continue; 6005 } 6006 } while (start = next, start != end); 6007 6008 if (applied) 6009 vma->fast_reflink = applied; 6010 } 6011 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki