Re: [PATCH v2 1/3] mm: memory-failure: update ttu flag inside unmap_poisoned_folio

[mawupeng <mawupeng1@huawei.com>]

On 2025/1/17 11:57, kernel test robot wrote:
> Hi Wupeng,
> 
> kernel test robot noticed the following build errors:

Thanks.

Will be fixed later.

> 
> [auto build test ERROR on akpm-mm/mm-everything]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Wupeng-Ma/mm-memory-failure-update-ttu-flag-inside-unmap_poisoned_folio/20250116-142614
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20250116061657.227027-2-mawupeng1%40huawei.com
> patch subject: [PATCH v2 1/3] mm: memory-failure: update ttu flag inside unmap_poisoned_folio
> config: s390-randconfig-001-20250117 (https://download.01.org/0day-ci/archive/20250117/202501171300.SYkofFQ6-lkp@intel.com/config)
> compiler: s390-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250117/202501171300.SYkofFQ6-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/202501171300.SYkofFQ6-lkp@intel.com/
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from mm/page_isolation.c:13:
>>> mm/internal.h:1142:1: error: expected identifier or '(' before '{' token
>     1142 | {
>          | ^
>>> mm/internal.h:1141:19: warning: 'unmap_poisoned_folio' declared 'static' but never defined [-Wunused-function]
>     1141 | static inline int unmap_poisoned_folio(struct folio *folio, unsigned long pfn, bool must_kill);
>          |                   ^~~~~~~~~~~~~~~~~~~~
> --
>    In file included from mm/damon/paddr.c:19:
>>> mm/damon/../internal.h:1142:1: error: expected identifier or '(' before '{' token
>     1142 | {
>          | ^
>>> mm/damon/../internal.h:1141:19: warning: 'unmap_poisoned_folio' declared 'static' but never defined [-Wunused-function]
>     1141 | static inline int unmap_poisoned_folio(struct folio *folio, unsigned long pfn, bool must_kill);
>          |                   ^~~~~~~~~~~~~~~~~~~~
> 
> 
> vim +1142 mm/internal.h
> 
> 31d3d3484f9bd2 Wu Fengguang            2009-12-16  1121  
> 7c116f2b0dbac4 Wu Fengguang            2009-12-16  1122  extern u32 hwpoison_filter_dev_major;
> 7c116f2b0dbac4 Wu Fengguang            2009-12-16  1123  extern u32 hwpoison_filter_dev_minor;
> 478c5ffc0b5052 Wu Fengguang            2009-12-16  1124  extern u64 hwpoison_filter_flags_mask;
> 478c5ffc0b5052 Wu Fengguang            2009-12-16  1125  extern u64 hwpoison_filter_flags_value;
> 4fd466eb46a6a9 Andi Kleen              2009-12-16  1126  extern u64 hwpoison_filter_memcg;
> 1bfe5febe34d2b Haicheng Li             2009-12-16  1127  extern u32 hwpoison_filter_enable;
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1128  #define MAGIC_HWPOISON	0x48575053U	/* HWPS */
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1129  void SetPageHWPoisonTakenOff(struct page *page);
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1130  void ClearPageHWPoisonTakenOff(struct page *page);
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1131  bool take_page_off_buddy(struct page *page);
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1132  bool put_page_back_buddy(struct page *page);
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1133  struct task_struct *task_early_kill(struct task_struct *tsk, int force_early);
> 68158bfa3dbd4a Matthew Wilcox (Oracle  2024-10-05  1134) void add_to_kill_ksm(struct task_struct *tsk, const struct page *p,
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1135  		     struct vm_area_struct *vma, struct list_head *to_kill,
> 3a78f77fd1fb82 Miaohe Lin              2024-06-12  1136  		     unsigned long ksm_addr);
> 68158bfa3dbd4a Matthew Wilcox (Oracle  2024-10-05  1137) unsigned long page_mapped_in_vma(const struct page *page,
> 68158bfa3dbd4a Matthew Wilcox (Oracle  2024-10-05  1138) 		struct vm_area_struct *vma);
> eb36c5873b96e8 Al Viro                 2012-05-30  1139  
> 16038c4fffd802 Kefeng Wang             2024-08-27  1140  #else
> 2b5df10a15dc74 Ma Wupeng               2025-01-16 @1141  static inline int unmap_poisoned_folio(struct folio *folio, unsigned long pfn, bool must_kill);
> 16038c4fffd802 Kefeng Wang             2024-08-27 @1142  {
> 2b5df10a15dc74 Ma Wupeng               2025-01-16  1143  	return -EBUSY;
> 16038c4fffd802 Kefeng Wang             2024-08-27  1144  }
> 16038c4fffd802 Kefeng Wang             2024-08-27  1145  #endif
> 16038c4fffd802 Kefeng Wang             2024-08-27  1146  
>