[Part3 PATCH v2 3/4] mem-hotplug: Skip LOCAL_NODE_DATA pages in memory online procedure.

[Tang Chen]

Pages marked as LOCAL_NODE_DATA are skipped when we do memory offline.
So we have to skip them again when we do memory online.

Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
---
 mm/memory_hotplug.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c2017eb..3561048 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -843,6 +843,11 @@ static int online_pages_range(unsigned long start_pfn, unsigned long nr_pages,
 	if (PageReserved(pfn_to_page(start_pfn)))
 		for (i = 0; i < nr_pages; i++) {
 			page = pfn_to_page(start_pfn + i);
+
+			/* Skip pages storing local node kernel data. */
+			if (is_local_node_data(page))
+				continue;
+
 			(*online_page_callback)(page);
 			onlined_pages++;
 		}
-- 
1.7.1

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