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From: Zi Yan <zi.yan@cs.rutgers.edu>
Subject: Re: [PATCH v4 05/11] mm: thp: enable thp migration in generic path
Date: Wed, 15 Mar 2017 11:00:52 -0500
Message-ID: <84C15843-6697-42AD-B590-DBB72E672632@cs.rutgers.edu>
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References: <201703150534.RFh2ClRg%fengguang.wu@intel.com>
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To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: kbuild test robot <lkp@intel.com>, "kbuild-all@01.org" <kbuild-all@01.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Linux MM <linux-mm@kvack.org>, "Kirill A.
 Shutemov" <kirill.shutemov@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Minchan Kim <minchan@kernel.org>, Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@techsingularity.net>, Michal Hocko <mhocko@kernel.org>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, Anshuman Khandual <khandual@linux.vnet.ibm.com>, dnellans@nvidia.com

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On 15 Mar 2017, at 4:01, Geert Uytterhoeven wrote:

> On Tue, Mar 14, 2017 at 10:55 PM, Zi Yan <zi.yan@cs.rutgers.edu> wrote:=

>>>>> include/linux/swapops.h:223:2: warning: missing braces around initi=
alizer [-Wmissing-braces]
>>>      return (pmd_t){ 0 };
>>>      ^
>>>    include/linux/swapops.h:223:2: warning: (near initialization for '=
(anonymous).pmd') [-Wmissing-braces]
>>
>> I do not have any warning with gcc 6.3.0. This seems to be a GCC bug
>> (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53119).
>
> I guess you need
>
>     return (pmd_t) { { 0, }};
>
> to kill the warning.

Yeah, that should work. I find the same solution from StackOverflow.

Thanks.

--
Best Regards
Yan Zi

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