Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on linux/master] [also build test ERROR on linus/master v5.18-rc5 next-20220505] [cannot apply to hnaz-mm/master] [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-memcg-support-control-THP-behaviour-in-cgroup/20220505-114028 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 107c948d1d3e61d10aee9d0f7c3d81bbee9842af config: i386-randconfig-a001 (https://download.01.org/0day-ci/archive/20220505/202205052101.TsTEcZoc-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/f08a35b9798572693a91c6a3d823ed9ae54ef688 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review cgel-zte-gmail-com/mm-memcg-support-control-THP-behaviour-in-cgroup/20220505-114028 git checkout f08a35b9798572693a91c6a3d823ed9ae54ef688 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 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 >>): ld: mm/memory.o: in function `__handle_mm_fault': >> memory.c:(.text+0xc6f9): undefined reference to `__transparent_hugepage_enabled' >> ld: memory.c:(.text+0xc751): undefined reference to `__transparent_hugepage_enabled' ld: mm/huge_memory.o: in function `transparent_hugepage_active': >> huge_memory.c:(.text+0x6351): undefined reference to `__transparent_hugepage_enabled' -- 0-DAY CI Kernel Test Service https://01.org/lkp