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-rw-r--r--mm/vmscan.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index eeb3bc9d1d36..661576324c7f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2955,14 +2955,17 @@ int kswapd_run(int nid)
}
/*
- * Called by memory hotplug when all memory in a node is offlined.
+ * Called by memory hotplug when all memory in a node is offlined. Caller must
+ * hold lock_memory_hotplug().
*/
void kswapd_stop(int nid)
{
struct task_struct *kswapd = NODE_DATA(nid)->kswapd;
- if (kswapd)
+ if (kswapd) {
kthread_stop(kswapd);
+ NODE_DATA(nid)->kswapd = NULL;
+ }
}
static int __init kswapd_init(void)