Hi Yang, Thank you for the patch! Yet something to improve: [auto build test ERROR on hnaz-linux-mm/master] url: https://github.com/0day-ci/linux/commits/Yang-Shi/mm-gup-remove-FOLL_SPLIT/20210330-034042 base: https://github.com/hnaz/linux-mm master config: s390-randconfig-r032-20210330 (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/c8563a636718f98af86a3965d94e25b8f2cf2354 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Yang-Shi/mm-gup-remove-FOLL_SPLIT/20210330-034042 git checkout c8563a636718f98af86a3965d94e25b8f2cf2354 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arch/s390/mm/gmap.c: In function 'thp_split_mm': >> arch/s390/mm/gmap.c:2498:27: error: 'FOLL_SPLIT' undeclared (first use in this function); did you mean 'FOLL_PIN'? 2498 | follow_page(vma, addr, FOLL_SPLIT); | ^~~~~~~~~~ | FOLL_PIN arch/s390/mm/gmap.c:2498:27: note: each undeclared identifier is reported only once for each function it appears in vim +2498 arch/s390/mm/gmap.c 0959e168678d2d Janosch Frank 2018-07-17 2487 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2488 static inline void thp_split_mm(struct mm_struct *mm) 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2489 { 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2490 #ifdef CONFIG_TRANSPARENT_HUGEPAGE 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2491 struct vm_area_struct *vma; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2492 unsigned long addr; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2493 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2494 for (vma = mm->mmap; vma != NULL; vma = vma->vm_next) { 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2495 for (addr = vma->vm_start; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2496 addr < vma->vm_end; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2497 addr += PAGE_SIZE) 1e133ab296f3ff Martin Schwidefsky 2016-03-08 @2498 follow_page(vma, addr, FOLL_SPLIT); 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2499 vma->vm_flags &= ~VM_HUGEPAGE; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2500 vma->vm_flags |= VM_NOHUGEPAGE; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2501 } 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2502 mm->def_flags |= VM_NOHUGEPAGE; 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2503 #endif 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2504 } 1e133ab296f3ff Martin Schwidefsky 2016-03-08 2505 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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