X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=mm%2Fmemory_hotplug.c;h=c46887b5a11eaa5bbe48008d16ad71bd37f7302f;hb=3a36199114de0e60984534776732e0a7a220e29e;hp=02159c755136ea0463f57a2a951f9cad223aceb1;hpb=0835619348b097404f4f85bc5195c6e23a2f8de4;p=karo-tx-linux.git

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 02159c755136..c46887b5a11e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -498,7 +498,9 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
 	 * The node we allocated has no zone fallback lists. For avoiding
 	 * to access not-initialized zonelist, build here.
 	 */
+	mutex_lock(&zonelists_mutex);
 	build_all_zonelists(NULL);
+	mutex_unlock(&zonelists_mutex);
 
 	return pgdat;
 }
@@ -521,7 +523,7 @@ int mem_online_node(int nid)
 
 	lock_memory_hotplug();
 	pgdat = hotadd_new_pgdat(nid, 0);
-	if (pgdat) {
+	if (!pgdat) {
 		ret = -ENOMEM;
 		goto out;
 	}