On Thursday 09 April 2015 12:31:05 David Rientjes wrote:
> On Thu, 9 Apr 2015, Arnd Bergmann wrote:
>
> > This is a fix^3 for the mempool poisoning patch, which introduces
> > a compile-time error on some ARM randconfig builds:
> >
> > mm/mempool.c: In function 'check_element':
> > mm/mempool.c:65:16: error: implicit declaration of function 'kmap_atomic' [-Werror=implicit-function-declaration]
> > void *addr = kmap_atomic((struct page *)element);
> >
> > The problem is clearly the missing declaration, and including
> > linux/highmem.h fixes it.
> >
> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> > Fixes: a3db5a8463b0db ("mm, mempool: poison elements backed by page allocator fix fix")
>
> Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
>
> Thanks! Can you confirm that this is because CONFIG_BLOCK is disabled and
> not something else?
Unfortunately I've lost the information which build was responsible
for this error (normally I keep it, but my script failed here because the
same config introduced two new regressions). CONFIG_BLOCK sounds plausible
here.
If necessary, I can repeat the last few hundred builds without this
patch to find out what it was.
Arnd
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