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

From: Tang Chen
Date: Thu Jun 13 2013 - 09:28:01 EST


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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/