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SubjectRe: [PATCH v6 05/10] mm: thp: enable thp migration in generic path
On Thu, 25 May 2017 13:19:54 -0400 "Zi Yan" <zi.yan@cs.rutgers.edu> wrote:

> On 25 May 2017, at 13:06, kbuild test robot wrote:
>
> > Hi Zi,
> >
> > [auto build test WARNING on mmotm/master]
> > [also build test WARNING on v4.12-rc2 next-20170525]
> > [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/20170526-003749
> > base: git://git.cmpxchg.org/linux-mmotm.git master
> > config: i386-randconfig-x016-201721 (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=i386
> >
> > All warnings (new ones prefixed by >>):
> >
> > In file included from fs/proc/task_mmu.c:15:0:
> > include/linux/swapops.h: In function 'swp_entry_to_pmd':
> >>> include/linux/swapops.h:222:16: warning: missing braces around initializer [-Wmissing-braces]
> > return (pmd_t){{ 0 }};
> > ^
>
> The braces are added to eliminate the warning from "m68k-linux-gcc (GCC) 4.9.0",
> which has the bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119.

I think we'd prefer to have a warning on m68k than on i386! Is there
something smarter we can do here?

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