linux-kernel - [akpm-mm:mm-unstable 245/249] mm/memory-failure.c:1896:20: error: conflicting types for 'free_raw_hwp_pages'; have 'void(struct page *, bool)' {aka 'void(struct page *,

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Message-ID: <202207041521.EwJv2nMT-lkp@intel.com>
Date:   Mon, 4 Jul 2022 15:37:18 +0800
From:   kernel test robot <lkp@...el.com>
To:     Naoya Horiguchi <naoya.horiguchi@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: [akpm-mm:mm-unstable 245/249] mm/memory-failure.c:1896:20: error:
 conflicting types for 'free_raw_hwp_pages'; have 'void(struct page *, bool)'
 {aka 'void(struct page *, _Bool)'}

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   ce4dc6b0378ef1bd305c37c94fb8aabee4c5be04
commit: 06df85861209bbda16524e813ed959c09dee999b [245/249] mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage
config: parisc-randconfig-r014-20220703 (https://download.01.org/0day-ci/archive/20220704/202207041521.EwJv2nMT-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=06df85861209bbda16524e813ed959c09dee999b
        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
        git fetch --no-tags akpm-mm mm-unstable
        git checkout 06df85861209bbda16524e813ed959c09dee999b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/mmzone.h:21,
                    from include/linux/gfp.h:6,
                    from include/linux/mm.h:7,
                    from mm/memory-failure.c:37:
   mm/memory-failure.c: In function 'raw_hwp_list_head':
   mm/memory-failure.c:1679:59: error: 'SUBPAGE_INDEX_HWPOISON' undeclared (first use in this function)
    1679 |         return (struct llist_head *)&page_private(hpage + SUBPAGE_INDEX_HWPOISON);
         |                                                           ^~~~~~~~~~~~~~~~~~~~~~
   include/linux/mm_types.h:334:43: note: in definition of macro 'page_private'
     334 | #define page_private(page)              ((page)->private)
         |                                           ^~~~
   mm/memory-failure.c:1679:59: note: each undeclared identifier is reported only once for each function it appears in
    1679 |         return (struct llist_head *)&page_private(hpage + SUBPAGE_INDEX_HWPOISON);
         |                                                           ^~~~~~~~~~~~~~~~~~~~~~
   include/linux/mm_types.h:334:43: note: in definition of macro 'page_private'
     334 | #define page_private(page)              ((page)->private)
         |                                           ^~~~
   mm/memory-failure.c: At top level:
>> mm/memory-failure.c:1896:20: error: conflicting types for 'free_raw_hwp_pages'; have 'void(struct page *, bool)' {aka 'void(struct page *, _Bool)'}
    1896 | static inline void free_raw_hwp_pages(struct page *hpage, bool move_flag)
         |                    ^~~~~~~~~~~~~~~~~~
   mm/memory-failure.c:1725:20: note: previous definition of 'free_raw_hwp_pages' with type 'long int(struct page *, bool)' {aka 'long int(struct page *, _Bool)'}
    1725 | static inline long free_raw_hwp_pages(struct page *hpage, bool move_flag)
         |                    ^~~~~~~~~~~~~~~~~~
   mm/memory-failure.c: In function 'unpoison_memory':
>> mm/memory-failure.c:2353:31: error: void value not ignored as it ought to be
    2353 |                         count = free_raw_hwp_pages(page, false);
         |                               ^
   mm/memory-failure.c:2363:31: error: void value not ignored as it ought to be
    2363 |                         count = free_raw_hwp_pages(page, false);
         |                               ^
   mm/memory-failure.c: In function 'raw_hwp_list_head':
   mm/memory-failure.c:1680:1: error: control reaches end of non-void function [-Werror=return-type]
    1680 | }
         | ^
   cc1: some warnings being treated as errors


vim +1896 mm/memory-failure.c

  1895	
> 1896	static inline void free_raw_hwp_pages(struct page *hpage, bool move_flag)
  1897	{
  1898	}
  1899	#endif	/* CONFIG_HUGETLB_PAGE */
  1900	

-- 
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