From b4ccec41af82b5a5518c6534444412961894f07c Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Fri, 8 Sep 2017 16:13:15 -0700 Subject: [PATCH] mm/sparse.c: fix typo in online_mem_sections online_mem_sections() accidentally marks online only the first section in the given range. This is a typo which hasn't been noticed because I haven't tested large 2GB blocks previously. All users of pfn_to_online_page would get confused on the the rest of the pfn range in the block. All we need to fix this is to use iterator (pfn) rather than start_pfn. Link: http://lkml.kernel.org/r/20170904112210.3401-1-mhocko@kernel.org Fixes: 2d070eab2e82 ("mm: consider zone which is not fully populated to have holes") Signed-off-by: Michal Hocko Acked-by: Vlastimil Babka Cc: Anshuman Khandual Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/sparse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/sparse.c b/mm/sparse.c index a9783acf2bb9..83b3bf6461af 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -626,7 +626,7 @@ void online_mem_sections(unsigned long start_pfn, unsigned long end_pfn) unsigned long pfn; for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) { - unsigned long section_nr = pfn_to_section_nr(start_pfn); + unsigned long section_nr = pfn_to_section_nr(pfn); struct mem_section *ms; /* onlining code should never touch invalid ranges */ -- 2.20.1