The patch titled
Subject: mm/memory_hotplug.c: remove unnecesary check from register_page_bootmem_info_section()
has been added to the -mm tree. Its filename is
mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxxxxxxxxxxxxx>
Subject: mm/memory_hotplug.c: remove unnecesary check from register_page_bootmem_info_section()
When we call register_page_bootmem_info_section() having
CONFIG_SPARSEMEM_VMEMMAP enabled, we check if the pfn is valid. This
check is redundant as we already checked this in
register_page_bootmem_info_node() before calling
register_page_bootmem_info_section(), so let's get rid of it.
Link: http://lkml.kernel.org/r/20171205143422.GA31458@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 | 3 ---
1 file changed, 3 deletions(-)
diff -puN mm/memory_hotplug.c~mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section
+++ a/mm/memory_hotplug.c
@@ -200,9 +200,6 @@ static void register_page_bootmem_info_s
struct mem_section *ms;
struct page *page, *memmap;
- if (!pfn_valid(start_pfn))
- return;
-
section_nr = pfn_to_section_nr(start_pfn);
ms = __nr_to_section(section_nr);
_
Patches currently in -mm which might be from osalvador@xxxxxxxxxxxxxxxxxx are
mm-memory_hotplug-remove-unnecesary-check-from-register_page_bootmem_info_section.patch
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