linux-kernel - Re: [PATCH v5 2/2] mm, thp: avoid unnecessary swapin in khugepaged

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Date:	Fri, 8 Apr 2016 01:39:24 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Ebru Akagunduz <ebru.akagunduz@...il.com>
Cc:	kbuild-all@...org, linux-mm@...ck.org, hughd@...gle.com,
	riel@...hat.com, akpm@...ux-foundation.org,
	kirill.shutemov@...ux.intel.com, n-horiguchi@...jp.nec.com,
	aarcange@...hat.com, iamjoonsoo.kim@....com, gorcunov@...nvz.org,
	linux-kernel@...r.kernel.org, mgorman@...e.de, rientjes@...gle.com,
	vbabka@...e.cz, aneesh.kumar@...ux.vnet.ibm.com,
	hannes@...xchg.org, mhocko@...e.cz, boaz@...xistor.com,
	Ebru Akagunduz <ebru.akagunduz@...il.com>
Subject: Re: [PATCH v5 2/2] mm, thp: avoid unnecessary swapin in khugepaged

Hi Ebru,

[auto build test ERROR on next-20160407]
[cannot apply to v4.6-rc2 v4.6-rc1 v4.5-rc7 v4.6-rc2]
[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/Ebru-Akagunduz/mm-thp-Fix-unnecessarry-resource-consuming-in-swapin/20160408-013104
config: x86_64-randconfig-x000-201614 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   mm/huge_memory.c: In function 'collapse_huge_page':
>> mm/huge_memory.c:2516:46: error: expected expression before ')' token
     if (allocstall == curr_allocstall && swap !=)
                                                 ^

vim +2516 mm/huge_memory.c

  2510		swap = get_mm_counter(mm, MM_SWAPENTS);
  2511		curr_allocstall = sum_vm_event(ALLOCSTALL);
  2512		/*
  2513		 * When system under pressure, don't swapin readahead.
  2514		 * So that avoid unnecessary resource consuming.
  2515		 */
> 2516		if (allocstall == curr_allocstall && swap !=)
  2517			__collapse_huge_page_swapin(mm, vma, address, pmd);
  2518	
  2519		anon_vma_lock_write(vma->anon_vma);

---
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Download attachment ".config.gz" of type "application/octet-stream" (21584 bytes)