mm/khugepaged.c:747:25: sparse: sparse: symbol 'khugepaged_collapse_control' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   89cdf9d556016a54ff6ddd62324aa5ec790c05cc
commit: 34d6b470ab9cf3a038f9bcd0f8cf09016a2e6fbe mm/khugepaged: add struct collapse_control
date:   1 year, 2 months ago
config: i386-randconfig-062-20230909 (https://download.01.org/0day-ci/archive/20231110/202311102258.uFby3wrM-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231110/202311102258.uFby3wrM-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/202311102258.uFby3wrM-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> mm/khugepaged.c:747:25: sparse: sparse: symbol 'khugepaged_collapse_control' was not declared. Should it be static?

vim +/khugepaged_collapse_control +747 mm/khugepaged.c

   745	
   746	
 > 747	struct collapse_control khugepaged_collapse_control = {
   748		.last_target_node = NUMA_NO_NODE,
   749	};
   750	

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