linux-kernel - Re: [PATCH 08/12] hugetlb: batch freeing of vmemmap pages

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Date:   Sat, 26 Aug 2023 12:00:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        Muchun Song <songmuchun@...edance.com>,
        Joao Martins <joao.m.martins@...cle.com>,
        Oscar Salvador <osalvador@...e.de>,
        David Hildenbrand <david@...hat.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        David Rientjes <rientjes@...gle.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Naoya Horiguchi <naoya.horiguchi@...ux.dev>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Michal Hocko <mhocko@...e.com>,
        Matthew Wilcox <willy@...radead.org>,
        Xiongchun Duan <duanxiongchun@...edance.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Mike Kravetz <mike.kravetz@...cle.com>
Subject: Re: [PATCH 08/12] hugetlb: batch freeing of vmemmap pages

Hi Mike,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20230825]
[cannot apply to akpm-mm/mm-everything v6.5-rc7 v6.5-rc6 v6.5-rc5 linus/master v6.5-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Mike-Kravetz/hugetlb-clear-flags-in-tail-pages-that-will-be-freed-individually/20230826-030805
base:   next-20230825
patch link:    https://lore.kernel.org/r/20230825190436.55045-9-mike.kravetz%40oracle.com
patch subject: [PATCH 08/12] hugetlb: batch freeing of vmemmap pages
config: s390-randconfig-001-20230826 (https://download.01.org/0day-ci/archive/20230826/202308261129.hdlNvI3X-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230826/202308261129.hdlNvI3X-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308261129.hdlNvI3X-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/hugetlb_vmemmap.c:601:6: warning: no previous prototype for function 'hugetlb_vmemmap_optimize_bulk' [-Wmissing-prototypes]
     601 | void hugetlb_vmemmap_optimize_bulk(const struct hstate *h, struct page *head,
         |      ^
   mm/hugetlb_vmemmap.c:601:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     601 | void hugetlb_vmemmap_optimize_bulk(const struct hstate *h, struct page *head,
         | ^
         | static 
   1 warning generated.


vim +/hugetlb_vmemmap_optimize_bulk +601 mm/hugetlb_vmemmap.c

   600	
 > 601	void hugetlb_vmemmap_optimize_bulk(const struct hstate *h, struct page *head,
   602				struct list_head *bulk_pages)
   603	{
   604		__hugetlb_vmemmap_optimize(h, head, bulk_pages);
   605	}
   606	

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