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SubjectRe: linux-next: build failure after merge of the akpm-current tree
Hi all,

On Tue, 1 Aug 2017 16:39:04 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> After merging the akpm tree, today's linux-next build (sparc defconfig)
> failed like this:
>
> In file included from mm/vmscan.c:55:0:
> include/linux/swapops.h: In function 'swp_entry_to_pmd':
> include/linux/swapops.h:226:9: error: implicit declaration of function '__pmd' [-Werror=implicit-function-declaration]
> return __pmd(0);
> ^
> include/linux/swapops.h:226:9: error: incompatible types when returning type 'int' but 'pmd_t {aka struct <anonymous>}' was expected
>
> Caused by commit
>
> 9bb18490758c ("mm-thp-enable-thp-migration-in-generic-path-fix")
>
> It looks like sparc 32 bit has no __pmd() ...
>
> I have reverted that commit for today.

OK, that is a pain as it causes many build warnings some of which are
treated as errors :-( (see e.g.
http://kisskb.ellerman.id.au/kisskb/buildresult/13112192/). So maybe
we need to fix sthe sparc32 build instead? Are there any other
architectures/platforms that do not define __pmd() ?

--
Cheers,
Stephen Rothwell

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