The patch titled
Subject: mm: memory_hotplug: remove second __nr_to_section in register_page_bootmem_info_section()
has been added to the -mm tree. Its filename is
mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxxxxxxxxxxxxx>
Subject: mm: memory_hotplug: remove second __nr_to_section in register_page_bootmem_info_section()
In register_page_bootmem_info_section() we call __nr_to_section() in order
to get the mem_section struct at the beginning of the function. Since we
already got it, there is no need for a second call to __nr_to_section().
Link: http://lkml.kernel.org/r/20171207102914.GA12396@xxxxxxxxxxxxxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/memory_hotplug.c~mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section
+++ a/mm/memory_hotplug.c
@@ -184,7 +184,7 @@ static void register_page_bootmem_info_s
for (i = 0; i < mapsize; i++, page++)
get_page_bootmem(section_nr, page, SECTION_INFO);
- usemap = __nr_to_section(section_nr)->pageblock_flags;
+ usemap = ms->pageblock_flags;
page = virt_to_page(usemap);
mapsize = PAGE_ALIGN(usemap_size()) >> PAGE_SHIFT;
@@ -207,7 +207,7 @@ static void register_page_bootmem_info_s
register_page_bootmem_memmap(section_nr, memmap, PAGES_PER_SECTION);
- usemap = __nr_to_section(section_nr)->pageblock_flags;
+ usemap = ms->pageblock_flags;
page = virt_to_page(usemap);
mapsize = PAGE_ALIGN(usemap_size()) >> PAGE_SHIFT;
_
Patches currently in -mm which might be from osalvador@xxxxxxxxxxxxxxxxxx are
mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section.patch
mm-memory_hotplug-remove-second-__nr_to_section-in-register_page_bootmem_info_section.patch
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