linux-kernel - Re: [PATCH v1 08/11] mm: hwpoison: soft offline supports thp migration

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Date:	Thu, 3 Mar 2016 16:06:35 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:	kbuild-all@...org, linux-mm@...ck.org,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...el.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Mel Gorman <mgorman@...hsingularity.net>,
	Michal Hocko <mhocko@...nel.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Pavel Emelyanov <xemul@...allels.com>,
	linux-kernel@...r.kernel.org,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Naoya Horiguchi <nao.horiguchi@...il.com>
Subject: Re: [PATCH v1 08/11] mm: hwpoison: soft offline supports thp
 migration

Hi Naoya,

[auto build test ERROR on v4.5-rc6]
[also build test ERROR on next-20160302]
[cannot apply to tip/x86/core asm-generic/master]
[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/Naoya-Horiguchi/mm-page-migration-enhancement-for-thp/20160303-154610
config: i386-randconfig-x013-201609 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

Note: the linux-review/Naoya-Horiguchi/mm-page-migration-enhancement-for-thp/20160303-154610 HEAD a0e4b096d1324d23aed454a230d4d31b99b92ae7 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   mm/memory-failure.c: In function 'new_page':
>> mm/memory-failure.c:1503:3: error: implicit declaration of function 'prep_transhuge_page' [-Werror=implicit-function-declaration]
      prep_transhuge_page(thp);
      ^
   cc1: some warnings being treated as errors

vim +/prep_transhuge_page +1503 mm/memory-failure.c

  1497	
  1498			thp = alloc_pages_node(nid,
  1499				(GFP_TRANSHUGE | __GFP_THISNODE) & ~__GFP_RECLAIM,
  1500				HPAGE_PMD_ORDER);
  1501			if (!thp)
  1502				return NULL;
> 1503			prep_transhuge_page(thp);
  1504			return thp;
  1505		} else
  1506			return __alloc_pages_node(nid, GFP_HIGHUSER_MOVABLE, 0);

---
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