From b5685e9263a6f3a8da546b8a46382f18a63745c9 Mon Sep 17 00:00:00 2001 From: Xishi Qiu Date: Tue, 8 Sep 2015 15:04:16 -0700 Subject: [PATCH] memory-hotplug: fix comments in zone_spanned_pages_in_node() and zone_spanned_pages_in_node() When hot adding a node from add_memory(), we will add memblock first, so the node is not empty. But when called from cpu_up(), the node should be empty. Signed-off-by: Xishi Qiu Cc: Tang Chen Cc: Yasuaki Ishimatsu Cc: Naoya Horiguchi Cc: Vlastimil Babka Cc: Taku Izumi \ Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 5e8e99dd595a..b0fda2b9ca76 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5085,7 +5085,7 @@ static unsigned long __meminit zone_spanned_pages_in_node(int nid, { unsigned long zone_start_pfn, zone_end_pfn; - /* When hotadd a new node, the node should be empty */ + /* When hotadd a new node from cpu_up(), the node should be empty */ if (!node_start_pfn && !node_end_pfn) return 0; @@ -5152,7 +5152,7 @@ static unsigned long __meminit zone_absent_pages_in_node(int nid, unsigned long zone_high = arch_zone_highest_possible_pfn[zone_type]; unsigned long zone_start_pfn, zone_end_pfn; - /* When hotadd a new node, the node should be empty */ + /* When hotadd a new node from cpu_up(), the node should be empty */ if (!node_start_pfn && !node_end_pfn) return 0; -- 2.34.1