linux-kernel - Re: [PATCH] mm/madvise: Enable (soft|hard) offline of HugeTLB pages at PGD level

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Date:   Wed, 26 Apr 2017 09:31:45 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, n-horiguchi@...jp.nec.com,
        akpm@...ux-foundation.org, aneesh.kumar@...ux.vnet.ibm.com
Subject: Re: [PATCH] mm/madvise: Enable (soft|hard) offline of HugeTLB pages
 at PGD level

Hi Anshuman,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.11-rc8 next-20170424]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-madvise-Enable-soft-hard-offline-of-HugeTLB-pages-at-PGD-level/20170425-224016
config: x86_64-kexec (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   mm/memory-failure.c: In function 'new_page':
>> mm/memory-failure.c:1485:7: error: implicit declaration of function 'hstate_is_gigantic' [-Werror=implicit-function-declaration]
      if (hstate_is_gigantic(page_hstate(compound_head(p))))
          ^~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/hstate_is_gigantic +1485 mm/memory-failure.c

  1479	EXPORT_SYMBOL(unpoison_memory);
  1480	
  1481	static struct page *new_page(struct page *p, unsigned long private, int **x)
  1482	{
  1483		int nid = page_to_nid(p);
  1484		if (PageHuge(p)) {
> 1485			if (hstate_is_gigantic(page_hstate(compound_head(p))))
  1486				return alloc_huge_page_nonid(page_hstate(compound_head(p)));
  1487	
  1488			return alloc_huge_page_node(page_hstate(compound_head(p)),

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