Hi Zi,

[auto build test WARNING on mmotm/master]
[also build test WARNING on v4.13-rc1 next-20170718]
[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/Zi-Yan/mm-page-migration-enhancement-for-thp/20170718-095519
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: xtensa-common_defconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   In file included from mm/vmscan.c:55:0:
   include/linux/swapops.h: In function 'swp_entry_to_pmd':
>> include/linux/swapops.h:220:2: warning: missing braces around initializer [-Wmissing-braces]
     return (pmd_t){ 0 };
     ^
   include/linux/swapops.h:220:2: warning: (near initialization for '(anonymous).pud') [-Wmissing-braces]

vim +220 include/linux/swapops.h

   217	
   218	static inline pmd_t swp_entry_to_pmd(swp_entry_t entry)
   219	{
 > 220		return (pmd_t){ 0 };
   221	}
   222	

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0-DAY kernel test infrastructure                Open Source Technology Center
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