From dccacf8def2b718528754867b58b37734b59b0d7 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 c5e79ef561b0 ("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 08ded037f89f..a3616f7a0e9e 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;