Hi Neil, Thank you for the patch! Yet something to improve: [auto build test ERROR on v5.12-rc5] [also build test ERROR on next-20210401] [cannot apply to hnaz-linux-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/0day-ci/linux/commits/Neil-Sun/mm-vmscan-c-drop_slab_node-with-task-s-memcg/20210402-184123 base: a5e13c6df0e41702d2b2c77c8ad41677ebb065b3 config: arm-randconfig-r035-20210401 (attached as .config) compiler: arm-linux-gnueabi-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/73abc13485ec57de137f60535b5b2495c0bac570 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Neil-Sun/mm-vmscan-c-drop_slab_node-with-task-s-memcg/20210402-184123 git checkout 73abc13485ec57de137f60535b5b2495c0bac570 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): mm/vmscan.c: In function 'drop_slab_node': >> mm/vmscan.c:705:11: error: implicit declaration of function 'mem_cgroup_from_task'; did you mean 'mem_cgroup_from_obj'? [-Werror=implicit-function-declaration] 705 | memcg = mem_cgroup_from_task(current); | ^~~~~~~~~~~~~~~~~~~~ | mem_cgroup_from_obj >> mm/vmscan.c:705:9: warning: assignment to 'struct mem_cgroup *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 705 | memcg = mem_cgroup_from_task(current); | ^ cc1: some warnings being treated as errors vim +705 mm/vmscan.c 693 694 void drop_slab_node(int nid) 695 { 696 unsigned long freed; 697 698 do { 699 struct mem_cgroup *memcg = NULL; 700 701 if (fatal_signal_pending(current)) 702 return; 703 704 freed = 0; > 705 memcg = mem_cgroup_from_task(current); 706 do { 707 freed += shrink_slab(GFP_KERNEL, nid, memcg, 0); 708 } while ((memcg = mem_cgroup_iter(NULL, memcg, NULL)) != NULL); 709 } while (freed > 10); 710 } 711 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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