Re: [PATCH v2 3/3] mm,memory_hotplug: Remove unneeded declarations

[David Hildenbrand]

On 02.06.21 11:14, Oscar Salvador wrote:
> include/linux/memory_hotplug.h has the following declarations:
>
> extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages);
> extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
> extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
>
> These declarations were added by the following commit:
>
> commit 3947be1969a9ce455ec30f60ef51efb10e4323d1
> Author: Dave Hansen <haveblue@xxxxxxxxxx>
> Date:   Sat Oct 29 18:16:54 2005 -0700
>
>      [PATCH] memory hotplug: sysfs and add/remove functions
>
> It seems that zone_grow_free_lists() and zone_grow_waitqueues() were
> never used, and add_one_highpage() was always declared as static in
> arch/i386/mm/init.c and later on in arch/x86/mm/init_32.c, and was
> later removed in:
>
> commit 5e7ccf8635c93b493f7d378a57ce300fbe1484e8
> Author: Jiang Liu <liuj97@xxxxxxxxx>
> Date:   Mon Apr 29 15:07:12 2013 -0700
>
>      mm/x86: use free_highmem_page() to free highmem pages into buddy system
>
> So remove these declarations.
>
> Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
> ---
>   include/linux/memory_hotplug.h | 3 ---
>   1 file changed, 3 deletions(-)
>
> diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
> index 0d837ce6ec11..9a19e97d4f1a 100644
> --- a/include/linux/memory_hotplug.h
> +++ b/include/linux/memory_hotplug.h
> @@ -80,9 +80,6 @@ struct range mhp_get_pluggable_range(bool need_mapping);
>   /*
>    * Zone resizing functions
>    */
> -extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages);
> -extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
> -extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
>   extern void adjust_present_page_count(struct zone *zone, long nr_pages);
>   /* VM interface that may be used by firmware interface */
>   extern int mhp_init_memmap_on_memory(unsigned long pfn, unsigned long nr_pages,

Right, that's a blast from the past. Thanks!

Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Thanks,

David / dhildenb