Hi Liu, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 56da8c1ec8638f6ad4df737a133a41b106a3ce42 commit: a095a940f784db58ea4e87df361f9a4fd0dd977f [3508/3508] memcg: add restrict to swap to cgroup1 config: x86_64-randconfig-122-20251210 (https://download.01.org/0day-ci/archive/20251210/202512101954.2PMARPcx-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512101954.2PMARPcx-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512101954.2PMARPcx-lkp@intel.com/ All warnings (new ones prefixed by >>):
mm/memcontrol.c:4428:12: warning: 'mem_cgroup_check_swap_for_v1' defined but not used [-Wunused-function] 4428 | static int mem_cgroup_check_swap_for_v1(struct folio *folio, swp_entry_t entry) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/mem_cgroup_check_swap_for_v1 +4428 mm/memcontrol.c 4427
4428 static int mem_cgroup_check_swap_for_v1(struct folio *folio, swp_entry_t entry) 4429 { 4430 return 0; 4431 } 4432 #endif 4433
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