Merge tag 'fixes-for-v3.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linus...

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index eeb3bc9..6615763 100644 (file)
--- 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)