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Date:   Wed, 6 Dec 2023 01:22:44 +0800
From:   kernel test robot <lkp@intel.com>
To:     York Jasper Niebuhr <yjnworkstation@gmail.com>,
        akpm@linux-foundation.org
Cc:     oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
        rppt@kernel.org, linux-security-module@vger.kernel.org,
        York Jasper Niebuhr <yjnworkstation@gmail.com>
Subject: Re: [PATCH] mm: init_mlocked_on_free
Message-ID: <202312060005.VsdhiMtz-lkp@intel.com>
References: <20231202134218.151074-1-yjnworkstation@gmail.com>
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In-Reply-To: <20231202134218.151074-1-yjnworkstation@gmail.com>
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Hi York,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 4e87148f80d198ba5febcbcc969c6b9471099a09]

url:    https://github.com/intel-lab-lkp/linux/commits/York-Jasper-Niebuhr/mm-init_mlocked_on_free/20231202-214431
base:   4e87148f80d198ba5febcbcc969c6b9471099a09
patch link:    https://lore.kernel.org/r/20231202134218.151074-1-yjnworkstation%40gmail.com
patch subject: [PATCH] mm: init_mlocked_on_free
config: i386-randconfig-141-20231203 (https://download.01.org/0day-ci/archive/20231206/202312060005.VsdhiMtz-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231206/202312060005.VsdhiMtz-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/202312060005.VsdhiMtz-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/mlock.c:301: warning: Function parameter or member 'cofinit' not described in 'munlock_folio'


vim +301 mm/mlock.c

7225522bb429a2f Vlastimil Babka     2013-09-11  295  
2fbb0c10d1e8222 Hugh Dickins        2022-02-14  296  /**
96f97c438f61ddb Lorenzo Stoakes     2023-01-12  297   * munlock_folio - munlock a folio
96f97c438f61ddb Lorenzo Stoakes     2023-01-12  298   * @folio: folio to be munlocked, either normal or a THP head.
5b40998ae35cf64 Vlastimil Babka     2013-09-11  299   */
9cdd4fc5d036cbe York Jasper Niebuhr 2023-12-02  300  void munlock_folio(struct folio *folio, int cofinit)
2fbb0c10d1e8222 Hugh Dickins        2022-02-14 @301  {
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  302  	struct folio_batch *fbatch;
56afe477df3cbbc Vlastimil Babka     2013-09-11  303  
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  304  	local_lock(&mlock_fbatch.lock);
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  305  	fbatch = this_cpu_ptr(&mlock_fbatch.fbatch);
5b40998ae35cf64 Vlastimil Babka     2013-09-11  306  	/*
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  307  	 * folio_test_clear_mlocked(folio) must be left to __munlock_folio(),
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  308  	 * which will check whether the folio is multiply mlocked.
5b40998ae35cf64 Vlastimil Babka     2013-09-11  309  	 */
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  310  	folio_get(folio);
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  311  	if (!folio_batch_add(fbatch, folio) ||
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  312  	    folio_test_large(folio) || lru_cache_disabled())
9cdd4fc5d036cbe York Jasper Niebuhr 2023-12-02  313  		mlock_folio_batch(fbatch, cofinit);
90d07210ab55e45 Lorenzo Stoakes     2023-01-12  314  	local_unlock(&mlock_fbatch.lock);
7a8010cd36273ff Vlastimil Babka     2013-09-11  315  }
56afe477df3cbbc Vlastimil Babka     2013-09-11  316  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki