From db4c7d55ae2a2b3e5658c4d840aa8891b3ec5136 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Mon, 6 Apr 2020 20:06:47 -0700 Subject: [PATCH] mm/page_ext.c: drop pfn_present() check when onlining Since commit d6d486e5fbc7 ("mm/memory_hotplug.c: don't allow to online/offline memory blocks with holes") we disallow to offline any memory with holes. As all boot memory is online and hotplugged memory cannot contain holes, we never online memory with holes. This present check can be dropped. Signed-off-by: David Hildenbrand Signed-off-by: Andrew Morton Cc: Michal Hocko Cc: Anshuman Khandual Cc: Dan Williams Cc: Greg Kroah-Hartman Cc: Pavel Tatashin Cc: "Rafael J. Wysocki" Link: http://lkml.kernel.org/r/20200127110424.5757-4-david@redhat.com Signed-off-by: Linus Torvalds --- mm/page_ext.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/mm/page_ext.c b/mm/page_ext.c index 08ded037f89f6..a3616f7a0e9e9 100644 --- a/mm/page_ext.c +++ b/mm/page_ext.c @@ -303,11 +303,8 @@ static int __meminit online_page_ext(unsigned long start_pfn, VM_BUG_ON(!node_state(nid, N_ONLINE)); } - for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) { - if (!pfn_in_present_section(pfn)) - continue; + for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) fail = init_section_page_ext(pfn, nid); - } if (!fail) return 0; -- 2.39.5