Re: [PATCH v3 11/11] mm/memory_hotplug: Remove "zone" parameter from sparse_remove_one_section

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On Mon 27-05-19 13:11:52, David Hildenbrand wrote:
> The parameter is unused, so let's drop it. Memory removal paths should
> never care about zones. This is the job of memory offlining and will
> require more refactorings.
> 
> Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Acked-by: Michal Hocko <mhocko@xxxxxxxx>

> ---
>  include/linux/memory_hotplug.h | 2 +-
>  mm/memory_hotplug.c            | 2 +-
>  mm/sparse.c                    | 4 ++--
>  3 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
> index 2f1f87e13baa..1a4257c5f74c 100644
> --- a/include/linux/memory_hotplug.h
> +++ b/include/linux/memory_hotplug.h
> @@ -346,7 +346,7 @@ extern void move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
>  extern bool is_memblock_offlined(struct memory_block *mem);
>  extern int sparse_add_one_section(int nid, unsigned long start_pfn,
>  				  struct vmem_altmap *altmap);
> -extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
> +extern void sparse_remove_one_section(struct mem_section *ms,
>  		unsigned long map_offset, struct vmem_altmap *altmap);
>  extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map,
>  					  unsigned long pnum);
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index 82136c5b4c5f..e48ec7b9dee2 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -524,7 +524,7 @@ static void __remove_section(struct zone *zone, struct mem_section *ms,
>  	start_pfn = section_nr_to_pfn((unsigned long)scn_nr);
>  	__remove_zone(zone, start_pfn);
>  
> -	sparse_remove_one_section(zone, ms, map_offset, altmap);
> +	sparse_remove_one_section(ms, map_offset, altmap);
>  }
>  
>  /**
> diff --git a/mm/sparse.c b/mm/sparse.c
> index d1d5e05f5b8d..1552c855d62a 100644
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -800,8 +800,8 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap,
>  		free_map_bootmem(memmap);
>  }
>  
> -void sparse_remove_one_section(struct zone *zone, struct mem_section *ms,
> -		unsigned long map_offset, struct vmem_altmap *altmap)
> +void sparse_remove_one_section(struct mem_section *ms, unsigned long map_offset,
> +			       struct vmem_altmap *altmap)
>  {
>  	struct page *memmap = NULL;
>  	unsigned long *usemap = NULL;
> -- 
> 2.20.1

-- 
Michal Hocko
SUSE Labs




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