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SubjectRe: [PATCH v2 1/3] mm/sparse: Add a static variable nr_present_sections
On Thu, 22 Feb 2018 17:11:28 +0800 Baoquan He <bhe@redhat.com> wrote:

> It's used to record how many memory sections are marked as present
> during system boot up, and will be used in the later patch.
>
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -202,6 +202,7 @@ static inline int next_present_section_nr(int section_nr)
> (section_nr <= __highest_present_section_nr)); \
> section_nr = next_present_section_nr(section_nr))
>
> +static int nr_present_sections;

I think this could be __initdata.

A nice comment explaining why it exists would be nice.

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