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 | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 075d412..21d6fcb 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -825,12 +825,18 @@ static void generic_online_page(struct page *page)
static int online_pages_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg)
{
- unsigned long i;
+ unsigned long i, magic;
unsigned long onlined_pages = *(unsigned long *)arg;
struct page *page;
if (PageReserved(pfn_to_page(start_pfn)))
for (i = 0; i < nr_pages; i++) {
page = pfn_to_page(start_pfn + i);
+ magic = (unsigned long)page->lru.next;
+
+ /* Skip pages storing local node kernel data. */
+ if (magic == LOCAL_NODE_DATA)
+ continue;
+
(*online_page_callback)(page);
onlined_pages++;
}
--
1.7.1
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