X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=mm%2Fmemcontrol.c;h=9ba67dd6db341c8097d7a7bdb9ef74918264d182;hp=204de6ab629273f70928b0eb863aee13be52f0e2;hb=0abb05a8cfd498a24ff4d290966e22fda3ee08e5;hpb=494fcf9f236d2ced8fede73189961526491db1dc

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 204de6ab6292..9ba67dd6db34 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4564,16 +4564,17 @@ static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp,
 swap_buffers:
 	/* Swap primary and spare array */
 	thresholds->spare = thresholds->primary;
-	/* If all events are unregistered, free the spare array */
-	if (!new) {
-		kfree(thresholds->spare);
-		thresholds->spare = NULL;
-	}
 
 	rcu_assign_pointer(thresholds->primary, new);
 
 	/* To be sure that nobody uses thresholds */
 	synchronize_rcu();
+
+	/* If all events are unregistered, free the spare array */
+	if (!new) {
+		kfree(thresholds->spare);
+		thresholds->spare = NULL;
+	}
 unlock:
 	mutex_unlock(&memcg->thresholds_lock);
 }