Messages in this thread Patch in this message | | | Date | Tue, 25 Aug 2015 10:03:14 +0800 | From | Xishi Qiu <> | Subject | [PATCH] memory-hotplug: fix comment in zone_spanned_pages_in_node() and zone_spanned_pages_in_node() |
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When hotadd a node from add_memory(), we will add memblock first, so the node is not empty. But when from cpu_up(), the node should be empty.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> --- 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 2ec3ca3..d370445 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5051,7 +5051,7 @@ 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; @@ -5118,7 +5118,7 @@ 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; -- 2.0.0
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