Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on next-20220506] [cannot apply to hnaz-mm/master kees/for-next/pstore linus/master v5.18-rc5] [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] url: https://github.com/intel-lab-lkp/linux/commits/cgel-zte-gmail-com/mm-ksm-introduce-ksm_force-for-each-process/20220507-094557 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220507/202205071213.kLZzW7OV-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 11.3.0 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/bc6a122b9e10290755c811e7fa23dd60d39303e2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review cgel-zte-gmail-com/mm-ksm-introduce-ksm_force-for-each-process/20220507-094557 git checkout bc6a122b9e10290755c811e7fa23dd60d39303e2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): mm/ksm.c: In function 'ksm_vma_check': >> mm/ksm.c:343:17: error: 'turn' undeclared (first use in this function) 343 | turn false; | ^~~~ mm/ksm.c:343:17: note: each undeclared identifier is reported only once for each function it appears in >> mm/ksm.c:343:21: error: expected ';' before 'false' 343 | turn false; | ^~~~~~ | ; vim +/turn +343 mm/ksm.c 336 337 /* Check if vma is qualified for ksmd scanning */ 338 static bool ksm_vma_check(struct vm_area_struct *vma) 339 { 340 unsigned long vm_flags = vma->vm_flags; 341 342 if (!(vma->vm_flags & VM_MERGEABLE) && !(vma->vm_mm->ksm_force)) > 343 turn false; 344 345 if (vm_flags & (VM_SHARED | VM_MAYSHARE | 346 VM_PFNMAP | VM_IO | VM_DONTEXPAND | 347 VM_HUGETLB | VM_MIXEDMAP)) 348 return false; /* just ignore this vma*/ 349 350 if (vma_is_dax(vma)) 351 return false; 352 -- 0-DAY CI Kernel Test Service https://01.org/lkp
