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authorWei Yang <richardw.yang@linux.intel.com>2019-09-23 15:36:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-24 15:54:09 -0700
commitc1cbc3eebf7a9ae46473a66710c0859aaafc1607 (patch)
tree701fabe4c243c8c44d3f5ab0bfd9a09fd607d0b6 /mm/sparse.c
parentdb57e98d87908b8837352abe08515e42752270c1 (diff)
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mm/sparse.c: use __nr_to_section(section_nr) to get mem_section
__pfn_to_section is defined as __nr_to_section(pfn_to_section_nr(pfn)). Since we already get section_nr, it is not necessary to get mem_section from start_pfn. By doing so, we reduce one redundant operation. Link: http://lkml.kernel.org/r/20190809010242.29797-1-richardw.yang@linux.intel.com Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Tested-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pavel Tatashin <pasha.tatashin@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 79355a86064f..a1679024ab5c 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -877,7 +877,7 @@ int __meminit sparse_add_section(int nid, unsigned long start_pfn,
*/
page_init_poison(pfn_to_page(start_pfn), sizeof(struct page) * nr_pages);
- ms = __pfn_to_section(start_pfn);
+ ms = __nr_to_section(section_nr);
set_section_nid(section_nr, nid);
section_mark_present(ms);