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Re: [PATCH v1 02/19] mm/compaction: support non-lru movable page migration

From Minchan Kim <minchan@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH v1 02/19] mm/compaction: support non-lru movable page migration
Date 2016-03-11 09:40 +0100
Message-ID <rbqM1-3qq-5@gated-at.bofh.it> (permalink)
References <rbpPZ-2Oc-43@gated-at.bofh.it> <rbqsG-3iZ-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi kbuild,

On Fri, Mar 11, 2016 at 04:11:19PM +0800, kbuild test robot wrote:
> Hi Minchan,
> 
> [auto build test ERROR on v4.5-rc7]
> [cannot apply to next-20160310]
> [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160311-153649
> config: x86_64-nfsroot (attached as .config)
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All errors (new ones prefixed by >>):
> 
>    In file included from mm/compaction.c:12:0:
> >> include/linux/compaction.h:87:20: error: static declaration of 'isolate_movable_page' follows non-static declaration
>     static inline bool isolate_movable_page(struct page *page, isolate_mode_t mode)
>                        ^
>    In file included from mm/compaction.c:11:0:
>    include/linux/migrate.h:36:13: note: previous declaration of 'isolate_movable_page' was here
>     extern bool isolate_movable_page(struct page *page, isolate_mode_t mode);
>                 ^
>    In file included from mm/compaction.c:12:0:
> >> include/linux/compaction.h:92:20: error: static declaration of 'putback_movable_page' follows non-static declaration
>     static inline void putback_movable_page(struct page *page)
>                        ^
>    In file included from mm/compaction.c:11:0:
>    include/linux/migrate.h:37:13: note: previous declaration of 'putback_movable_page' was here
>     extern void putback_movable_page(struct page *page);
>                 ^
> 
> vim +/isolate_movable_page +87 include/linux/compaction.h
> 
>     81	
>     82	static inline bool compaction_deferred(struct zone *zone, int order)
>     83	{
>     84		return true;
>     85	}
>     86	
>   > 87	static inline bool isolate_movable_page(struct page *page, isolate_mode_t mode)
>     88	{
>     89		return false;
>     90	}
>     91	
>   > 92	static inline void putback_movable_page(struct page *page)
>     93	{
>     94	}
>     95	#endif /* CONFIG_COMPACTION */
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Actually, I made patchset based on v4.5-rc6 but the problem you found is
still problem in v4.5-rc6, too. Thanks for catching it fast.

I should apply following patch to fix the problem.

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 6f040ad379ce..4cd4ddf64cc7 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -84,14 +84,6 @@ static inline bool compaction_deferred(struct zone *zone, int order)
 	return true;
 }
 
-static inline bool isolate_movable_page(struct page *page, isolate_mode_t mode)
-{
-	return false;
-}
-
-static inline void putback_movable_page(struct page *page)
-{
-}
 #endif /* CONFIG_COMPACTION */
 
 #if defined(CONFIG_COMPACTION) && defined(CONFIG_SYSFS) && defined(CONFIG_NUMA)

Thanks.

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Thread

[PATCH v1 00/19] Support non-lru page migration Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 13/19] zsmalloc: factor page chain functionality out Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
    Re: [PATCH v1 13/19] zsmalloc: factor page chain functionality out xuyiping <xuyiping@hisilicon.com> - 2016-03-12 04:20 +0100
      Re: [PATCH v1 13/19] zsmalloc: factor page chain functionality out Minchan Kim <minchan@kernel.org> - 2016-03-14 06:00 +0100
  [PATCH v1 08/19] zsmalloc: remove unused pool param in obj_free Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 12/19] zsmalloc: move struct zs_meta from mapping to freelist Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 17/19] zsmalloc: use single linked list for page chain Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 07/19] zsmalloc: reordering function parameter Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
    Re: [PATCH v1 07/19] zsmalloc: reordering function parameter Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-03-15 07:20 +0100
  [PATCH v1 05/19] zsmalloc: use first_page rather than page Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
    Re: [PATCH v1 05/19] zsmalloc: use first_page rather than page Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-03-15 07:20 +0100
  [PATCH v1 06/19] zsmalloc: clean up many BUG_ON Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 04/19] mm/balloon: use general movable page feature into balloon Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 15/19] zsmalloc: zs_compact refactoring Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 01/19] mm: use put_page to free page instead of putback_lru_page Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
    Re: [PATCH v1 01/19] mm: use put_page to free page instead of  putback_lru_page Vlastimil Babka <vbabka@suse.cz> - 2016-03-14 09:50 +0100
      Re: [PATCH v1 01/19] mm: use put_page to free page instead of  putback_lru_page Minchan Kim <minchan@kernel.org> - 2016-03-15 02:20 +0100
        Re: [PATCH v1 01/19] mm: use put_page to free page instead of  putback_lru_page Vlastimil Babka <vbabka@suse.cz> - 2016-03-15 20:10 +0100
  [PATCH v1 18/19] zsmalloc: migrate tail pages in zspage Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
  [PATCH v1 02/19] mm/compaction: support non-lru movable page migration Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100
    Re: [PATCH v1 02/19] mm/compaction: support non-lru movable page  migration kbuild test robot <lkp@intel.com> - 2016-03-11 09:20 +0100
      Re: [PATCH v1 02/19] mm/compaction: support non-lru movable page  migration Minchan Kim <minchan@kernel.org> - 2016-03-11 09:40 +0100
  [PATCH v1 14/19] zsmalloc: separate free_zspage from putback_zspage Minchan Kim <minchan@kernel.org> - 2016-03-11 08:40 +0100

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