[android-common:android12-5.10 2/2] mm/swap.c:778: warning: Function parameter or member 'tail' not described in 'mark_page_lazyfree_movetail'

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

Hi Charan,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android12-5.10
head:   1290154c48656bd1012a837076a0fbe379330eb3
commit: 8011eb22150e5bb6eb1834ce9913f36081d48ab5 [2/2] ANDROID: mm: provision to add shmem pages to inactive file lru head
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20260731/202607312302.NvrNuo1y-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/20260731/202607312302.NvrNuo1y-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/202607312302.NvrNuo1y-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/swap.c:502: warning: Function parameter or member 'vma_flags' not described in '__lru_cache_add_inactive_or_unevictable'
   mm/swap.c:502: warning: Excess function parameter 'vma' description in '__lru_cache_add_inactive_or_unevictable'
>> mm/swap.c:778: warning: Function parameter or member 'tail' not described in 'mark_page_lazyfree_movetail'


vim +778 mm/swap.c

10853a039208c4a Minchan Kim       2016-01-15  769  
9975da5f43bb72a Vinayak Menon     2021-03-18  770  /**
9975da5f43bb72a Vinayak Menon     2021-03-18  771   * mark_page_lazyfree_movetail - make a swapbacked page lazyfree
9975da5f43bb72a Vinayak Menon     2021-03-18  772   * @page: page to deactivate
9975da5f43bb72a Vinayak Menon     2021-03-18  773   *
9975da5f43bb72a Vinayak Menon     2021-03-18  774   * mark_page_lazyfree_movetail() moves @page to the tail of inactive file list.
9975da5f43bb72a Vinayak Menon     2021-03-18  775   * This is done to accelerate the reclaim of @page.
9975da5f43bb72a Vinayak Menon     2021-03-18  776   */
8011eb22150e5bb Charan Teja Reddy 2021-06-25  777  void mark_page_lazyfree_movetail(struct page *page, bool tail)
9975da5f43bb72a Vinayak Menon     2021-03-18 @778  {
9975da5f43bb72a Vinayak Menon     2021-03-18  779  	if (PageLRU(page) && !PageUnevictable(page) && PageSwapBacked(page) &&
9975da5f43bb72a Vinayak Menon     2021-03-18  780  		!PageSwapCache(page)) {
9975da5f43bb72a Vinayak Menon     2021-03-18  781  		struct pagevec *pvec;
9975da5f43bb72a Vinayak Menon     2021-03-18  782  
9975da5f43bb72a Vinayak Menon     2021-03-18  783  		local_lock(&lru_pvecs.lock);
9975da5f43bb72a Vinayak Menon     2021-03-18  784  		pvec = this_cpu_ptr(&lru_pvecs.lru_lazyfree_movetail);
9975da5f43bb72a Vinayak Menon     2021-03-18  785  		get_page(page);
9975da5f43bb72a Vinayak Menon     2021-03-18  786  		if (pagevec_add_and_need_flush(pvec, page))
9975da5f43bb72a Vinayak Menon     2021-03-18  787  			pagevec_lru_move_fn(pvec,
8011eb22150e5bb Charan Teja Reddy 2021-06-25  788  					lru_lazyfree_movetail_fn, &tail);
9975da5f43bb72a Vinayak Menon     2021-03-18  789  		local_unlock(&lru_pvecs.lock);
9975da5f43bb72a Vinayak Menon     2021-03-18  790  	}
9975da5f43bb72a Vinayak Menon     2021-03-18  791  }
9975da5f43bb72a Vinayak Menon     2021-03-18  792  

:::::: The code at line 778 was first introduced by commit
:::::: 9975da5f43bb72a37faf3981709fff766ab4ca15 ANDROID: mm: allow fast reclaim of shmem pages

:::::: TO: Vinayak Menon <vinmenon@codeaurora.org>
:::::: CC: Suren Baghdasaryan <surenb@google.com>

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