SLUB only fucus on the nodes which has normal memory, so ignore the other
node's hot-adding and hot-removing.
Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
---
mm/slub.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 8c691fa..4c5bdc0 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3577,6 +3577,9 @@ static void slab_mem_offline_callback(void *arg)
if (offline_node < 0)
return;
+ if (page_zonenum(pfn_to_page(marg->start_pfn)) > ZONE_NORMAL)
+ return;
+
down_read(&slub_lock);
list_for_each_entry(s, &slab_caches, list) {
n = get_node(s, offline_node);
@@ -3611,6 +3614,9 @@ static int slab_mem_going_online_callback(void *arg)
if (nid < 0)
return 0;
+ if (page_zonenum(pfn_to_page(marg->start_pfn)) > ZONE_NORMAL)
+ return 0;
+
/*
* We are bringing a node online. No memory is available yet. We must
* allocate a kmem_cache_node structure in order to bring the node
--
1.7.1
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