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

[Baoquan He]

On 03/13/20 at 09:42pm, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the akpm-current tree, today's linux-next build (x86_64
> allnoconfig) produced this warning:
> 
> mm/sparse.c:311:12: warning: 'fill_subsection_map' defined but not used [-Wunused-function]
>   311 | static int fill_subsection_map(unsigned long pfn, unsigned long nr_pages)
>       |            ^~~~~~~~~~~~~~~~~~~
> mm/sparse.c:306:13: warning: 'is_subsection_map_empty' defined but not used [-Wunused-function]
>   306 | static bool is_subsection_map_empty(struct mem_section *ms)
>       |             ^~~~~~~~~~~~~~~~~~~~~~~
> mm/sparse.c:301:12: warning: 'clear_subsection_map' defined but not used [-Wunused-function]
>   301 | static int clear_subsection_map(unsigned long pfn, unsigned long nr_pages)
>       |            ^~~~~~~~~~~~~~~~~~~~
> 
> Introduced by commits
> 
>   38eb09ac7c29 ("mm/sparse.c: introduce new function fill_subsection_map()")
>   334411156ba6 ("mm/sparse.c: introduce a new function clear_subsection_map()")

Hi Stephen,

I made below change, but I can't triger these warnings. Could you try
below patch, see if it's works?