Hi Miaohe, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.4-rc6 next-20230616] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Miaohe-Lin/memcg-remove-unneeded-header-files/20230617-152922 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230617072658.1826560-1-linmiaohe%40huawei.com patch subject: [PATCH] memcg: remove unneeded header files config: i386-randconfig-i012-20230617 (https://download.01.org/0day-ci/archive/20230617/202306171711.3ZCE2wVo-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20230617/202306171711.3ZCE2wVo-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306171711.3ZCE2wVo-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> mm/memcontrol.c:5447:2: error: call to undeclared function 'wb_memcg_offline'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] wb_memcg_offline(memcg); ^ >> mm/memcontrol.c:5788:8: error: call to undeclared function 'mapping_can_writeback'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] if (mapping_can_writeback(mapping)) { ^ mm/memcontrol.c:5788:8: note: did you mean 'mapping_map_writable'? include/linux/fs.h:545:19: note: 'mapping_map_writable' declared here static inline int mapping_map_writable(struct address_space *mapping) ^ 2 errors generated. vim +/wb_memcg_offline +5447 mm/memcontrol.c 8cdea7c0545426 Balbir Singh 2008-02-07 5424 eb95419b023aba Tejun Heo 2013-08-08 5425 static void mem_cgroup_css_offline(struct cgroup_subsys_state *css) df878fb04dea04 KAMEZAWA Hiroyuki 2008-02-07 5426 { eb95419b023aba Tejun Heo 2013-08-08 5427 struct mem_cgroup *memcg = mem_cgroup_from_css(css); 3bc942f372af38 Tejun Heo 2013-11-22 5428 struct mem_cgroup_event *event, *tmp; 79bd9814e5ec9a Tejun Heo 2013-11-22 5429 79bd9814e5ec9a Tejun Heo 2013-11-22 5430 /* 79bd9814e5ec9a Tejun Heo 2013-11-22 5431 * Unregister events and notify userspace. 79bd9814e5ec9a Tejun Heo 2013-11-22 5432 * Notify userspace about cgroup removing only after rmdir of cgroup 79bd9814e5ec9a Tejun Heo 2013-11-22 5433 * directory to avoid race between userspace and kernelspace. 79bd9814e5ec9a Tejun Heo 2013-11-22 5434 */ 4ba9515d32bac1 Shakeel Butt 2021-09-02 5435 spin_lock_irq(&memcg->event_list_lock); fba94807837850 Tejun Heo 2013-11-22 5436 list_for_each_entry_safe(event, tmp, &memcg->event_list, list) { 79bd9814e5ec9a Tejun Heo 2013-11-22 5437 list_del_init(&event->list); 79bd9814e5ec9a Tejun Heo 2013-11-22 5438 schedule_work(&event->remove); 79bd9814e5ec9a Tejun Heo 2013-11-22 5439 } 4ba9515d32bac1 Shakeel Butt 2021-09-02 5440 spin_unlock_irq(&memcg->event_list_lock); ec64f51545fffb KAMEZAWA Hiroyuki 2009-04-02 5441 bf8d5d52ffe89a Roman Gushchin 2018-06-07 5442 page_counter_set_min(&memcg->memory, 0); 230671533d6463 Roman Gushchin 2018-06-07 5443 page_counter_set_low(&memcg->memory, 0); 63677c745d63ba Roman Gushchin 2017-09-06 5444 567e9ab2e614e5 Johannes Weiner 2016-01-20 5445 memcg_offline_kmem(memcg); a178015cde6998 Yang Shi 2021-05-04 5446 reparent_shrinker_deferred(memcg); 52ebea749aaed1 Tejun Heo 2015-05-22 @5447 wb_memcg_offline(memcg); e4dde56cd20867 Yu Zhao 2022-12-21 5448 lru_gen_offline_memcg(memcg); 73f576c04b9410 Johannes Weiner 2016-07-20 5449 591edfb10a949d Roman Gushchin 2018-10-26 5450 drain_all_stock(memcg); 591edfb10a949d Roman Gushchin 2018-10-26 5451 73f576c04b9410 Johannes Weiner 2016-07-20 5452 mem_cgroup_id_put(memcg); df878fb04dea04 KAMEZAWA Hiroyuki 2008-02-07 5453 } df878fb04dea04 KAMEZAWA Hiroyuki 2008-02-07 5454 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
