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

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Date:	Fri, 11 Mar 2016 16:11:19 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Minchan Kim <minchan@...nel.org>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	jlayton@...chiereds.net, bfields@...ldses.org,
	Vlastimil Babka <vbabka@...e.cz>,
	Joonsoo Kim <iamjoonsoo.kim@....com>, koct9i@...il.com,
	aquini@...hat.com, virtualization@...ts.linux-foundation.org,
	Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	rknize@...orola.com, Rik van Riel <riel@...hat.com>,
	Gioh Kim <gurugio@...mail.net>,
	Minchan Kim <minchan@...nel.org>,
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v1 02/19] mm/compaction: support non-lru movable page
 migration

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 */

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