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Re: [PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put refcount for memory error handling

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On Mon, 10 Aug 2015 19:28:21 +0800 Wanpeng Li <wanpeng.li@hotmail.com> wrote:

> Introduce put_hwpoison_page to put refcount for memory 
> error handling. 
> 
> ...
>
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -922,6 +922,27 @@ int get_hwpoison_page(struct page *page)
>  }
>  EXPORT_SYMBOL_GPL(get_hwpoison_page);
>  
> +/**
> + * put_hwpoison_page() - Put refcount for memory error handling:
> + * @page:	raw error page (hit by memory error)
> + */
> +void put_hwpoison_page(struct page *page)
> +{
> +	struct page *head = compound_head(page);
> +
> +	if (PageHuge(head)) {
> +		put_page(head);
> +		return;
> +	}
> +
> +	if (PageTransHuge(head))
> +		if (page != head)
> +			put_page(head);
> +
> +	put_page(page);
> +}
> +EXPORT_SYMBOL_GPL(put_hwpoison_page);

I don't believe the export is needed?
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[PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put refcount for memory error handling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-10 14:00 +0200
  Re: [PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put  refcount for memory error handling Andrew Morton <akpm@linux-foundation.org> - 2015-08-12 01:30 +0200
    Re: [PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put  refcount for memory error handling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-12 02:00 +0200
    Re: [PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put  refcount for memory error handling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-12 04:40 +0200
  Re: [PATCH v2 3/5] mm/hwpoison: introduce put_hwpoison_page to put  refcount for memory error handling Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2015-08-12 11:00 +0200

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