Re: linux-next: build failure after merge of the akpm-current tree

[Dan Williams]

On Tue, Jan 19, 2021 at 9:25 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> After merging the akpm-current tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> mm/memory_hotplug.c: In function 'move_pfn_range_to_zone':
> mm/memory_hotplug.c:772:24: error: 'ZONE_DEVICE' undeclared (first use in this function)
>   772 |  if (zone_idx(zone) == ZONE_DEVICE) {
>       |                        ^~~~~~~~~~~
>
> Caused by commit
>
>   e821cf25cfee ("mm: teach pfn_to_online_page() about ZONE_DEVICE section collisions")
>
> I applied the patch from Randy Dunlap for today.
>
> That, however, lead to this warning:
>
> mm/memory_hotplug.c:730:13: warning: 'section_taint_zone_device' defined but not used [-Wunused-function]
>   730 | static void section_taint_zone_device(unsigned long pfn)
>       |             ^~~~~~~~~~~~~~~~~~~~~~~~~
>

I sent this one as an alternate:

http://lore.kernel.org/r/161111619868.2787408.1710192276369197040.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx