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-rw-r--r--kernel/cpu.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 3e8b3ba2717..124ad9d6be1 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -357,8 +357,11 @@ int __cpuinit cpu_up(unsigned int cpu)
return -ENOMEM;
}
- if (pgdat->node_zonelists->_zonerefs->zone == NULL)
+ if (pgdat->node_zonelists->_zonerefs->zone == NULL) {
+ mutex_lock(&zonelists_mutex);
build_all_zonelists(NULL);
+ mutex_unlock(&zonelists_mutex);
+ }
#endif
cpu_maps_update_begin();