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-rw-r--r--mm/page_alloc.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 03a386d24ef2..fd8e3ca0cf3b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1464,8 +1464,11 @@ this_zone_full:
if (NUMA_BUILD)
zlc_mark_zone_full(zonelist, z);
try_next_zone:
- if (NUMA_BUILD && !did_zlc_setup) {
- /* we do zlc_setup after the first zone is tried */
+ if (NUMA_BUILD && !did_zlc_setup && num_online_nodes() > 1) {
+ /*
+ * we do zlc_setup after the first zone is tried but only
+ * if there are multiple nodes make it worthwhile
+ */
allowednodes = zlc_setup(zonelist, alloc_flags);
zlc_active = 1;
did_zlc_setup = 1;