[gourryinverse:gourry_pagecache 6/6] mm/migrate.c:2753: warning: Function parameter or struct member 'folio' not described in 'promotion_candidate'

[gourryinverse:gourry_pagecache 6/6] mm/migrate.c:2753: warning: Function parameter or struct member 'folio' not described in 'promotion_candidate'

[kernel test robot]

tree:   https://github.com/gourryinverse/linux gourry_pagecache
head:   0b481ba53a1ea6337129cbe63f9234a748df4843
commit: 0b481ba53a1ea6337129cbe63f9234a748df4843 [6/6] migrate,sysfs: add pagecache promotion
config: i386-buildonly-randconfig-003-20250107 (https://download.01.org/0day-ci/archive/20250107/202501071202.mCEEi2nO-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250107/202501071202.mCEEi2nO-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/202501071202.mCEEi2nO-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/migrate.c:2753: warning: Function parameter or struct member 'folio' not described in 'promotion_candidate'


vim +2753 mm/migrate.c

  2741	
  2742	/**
  2743	 * promotion_candidate: report a promotion candidate folio
  2744	 *
  2745	 * The folio will be isolated from LRU if selected, and task_work will
  2746	 * putback the folio on promotion failure.
  2747	 *
  2748	 * Candidates may not be promoted and may be returned to the LRU.
  2749	 *
  2750	 * Takes a folio reference that will be released in task work.
  2751	 */
  2752	void promotion_candidate(struct folio *folio)
> 2753	{

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