[anolis-intel-cloud:devel-6.6 1019/1019] mm/memcontrol.c:8380:9: error: implicit declaration of function 'mem_cgroup_attach_unevictable'

[kernel test robot <lkp@intel.com>]

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-6.6
head:   b4ec01ca5aac08347802786e2513d22bcc37d843
commit: 9f95c5d2e9cad8cbf1712aadceb8268703e0eff7 [1019/1019] anolis: mm/unevictable: move cgroup migration arm/disarm from can_attach to attach
config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260908/202609081655.HELc1BBu-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/20260908/202609081655.HELc1BBu-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/202609081655.HELc1BBu-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/memcontrol.c: In function 'mem_cgroup_attach':
>> mm/memcontrol.c:8380:9: error: implicit declaration of function 'mem_cgroup_attach_unevictable' [-Wimplicit-function-declaration]
    8380 |         mem_cgroup_attach_unevictable(tset);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/memcontrol.c: In function 'mem_cgroup_fork':
   mm/memcontrol.c:8386:9: error: implicit declaration of function 'unevict_task_fork'; did you mean 'exit_task_work'? [-Wimplicit-function-declaration]
    8386 |         unevict_task_fork(task);
         |         ^~~~~~~~~~~~~~~~~
         |         exit_task_work


vim +/mem_cgroup_attach_unevictable +8380 mm/memcontrol.c

  8356	
  8357	#ifdef CONFIG_LRU_GEN
  8358	static void mem_cgroup_attach(struct cgroup_taskset *tset)
  8359	{
  8360		struct task_struct *task;
  8361		struct cgroup_subsys_state *css;
  8362	
  8363		/* find the first leader if there is any */
  8364		cgroup_taskset_for_each_leader(task, css, tset)
  8365			break;
  8366	
  8367		if (!task)
  8368			return;
  8369	
  8370		task_lock(task);
  8371		if (task->mm && READ_ONCE(task->mm->owner) == task)
  8372			lru_gen_migrate_mm(task->mm);
  8373		task_unlock(task);
  8374	
  8375		mem_cgroup_attach_unevictable(tset);
  8376	}
  8377	#else
  8378	static void mem_cgroup_attach(struct cgroup_taskset *tset)
  8379	{
> 8380		mem_cgroup_attach_unevictable(tset);
  8381	}
  8382	#endif /* CONFIG_LRU_GEN */
  8383	

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