> From: chenqiwu <chenqiwu@xxxxxxxxxx>
>
> Remove duplicated pfn_to_section_nr() in pfn_valid() and pfn_present()
> to increase executing efficiency of code.
>
> Signed-off-by: chenqiwu <chenqiwu@xxxxxxxxxx>
> ---
> include/linux/mmzone.h | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 462f687..35763b5 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -1358,10 +1358,11 @@ static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)
> static inline int pfn_valid(unsigned long pfn)
> {
> struct mem_section *ms;
> + unsigned long sec_nr = pfn_to_section_nr(pfn);
>
> - if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
> + if (sec_nr >= NR_MEM_SECTIONS)
> return 0;
> - ms = __nr_to_section(pfn_to_section_nr(pfn));
> + ms = __nr_to_section(sec_nr);
> if (!valid_section(ms))
> return 0;
> /*
> @@ -1374,9 +1375,11 @@ static inline int pfn_valid(unsigned long pfn)
>
> static inline int pfn_present(unsigned long pfn)
> {
> - if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
> + unsigned long sec_nr = pfn_to_section_nr(pfn);
> +
> + if (sec_nr >= NR_MEM_SECTIONS)
> return 0;
> - return present_section(__nr_to_section(pfn_to_section_nr(pfn)));
> + return present_section(__nr_to_section(sec_nr));
> }
>
> static inline unsigned long next_present_section_nr(unsigned long section_nr)
> --
Looks ok.
Acked-by: Pankaj Gupta <pankaj.gupta.linux@xxxxxxxxx>
> 1.9.1
>
>
