Re: [PATCH] mm/memory_hotplug: remove an unused variable in move_pfn_range_to_zone()

[Anshuman Khandual]

On 06/27/2017 04:49 AM, Wei Yang wrote:
> There is an unused variable in move_pfn_range_to_zone().
> 
> This patch just removes it.
> 
> Signed-off-by: Wei Yang <richard.weiy...@gmail.com>
> ---
>  mm/memory_hotplug.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index 514014dde16b..16167c92bbf1 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -899,7 +899,6 @@ void __ref move_pfn_range_to_zone(struct zone *zone,
>       struct pglist_data *pgdat = zone->zone_pgdat;
>       int nid = pgdat->node_id;
>       unsigned long flags;
> -     unsigned long i;
>  
>       if (zone_is_empty(zone))
>               init_currently_empty_zone(zone, start_pfn, nr_pages);

We have this down in the function. IIRC I had checked out tag
mmotm-2017-06-16-13-59 where I am looking out for this function.

for (i = 0; i < nr_pages; i++) {
        unsigned long pfn = start_pfn + i;
        set_page_links(pfn_to_page(pfn), zone_idx(zone), nid, pfn);
}