[openeuler:OLK-6.6 3508/3508] mm/memcontrol.c:4428:12: warning: 'mem_cgroup_check_swap_for_v1' defined but not used

[openeuler:OLK-6.6 3508/3508] mm/memcontrol.c:4428:12: warning: 'mem_cgroup_check_swap_for_v1' defined but not used

[kernel test robot]

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@intel.com/config)
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@intel.com/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@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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