rcutrace: single_open() leaks

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 49099e8..cf6c174 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -95,7 +95,7 @@
 	.open = rcubarrier_open,
 	.read = seq_read,
 	.llseek = no_llseek,
-	.release = seq_release,
+	.release = single_release,
 };
 
 #ifdef CONFIG_RCU_BOOST
@@ -206,7 +206,7 @@
 	.open = rcuexp_open,
 	.read = seq_read,
 	.llseek = no_llseek,
-	.release = seq_release,
+	.release = single_release,
 };
 
 #ifdef CONFIG_RCU_BOOST
@@ -306,7 +306,7 @@
 	.open = rcuhier_open,
 	.read = seq_read,
 	.llseek = no_llseek,
-	.release = seq_release,
+	.release = single_release,
 };
 
 static void show_one_rcugp(struct seq_file *m, struct rcu_state *rsp)
@@ -348,7 +348,7 @@
 	.open = rcugp_open,
 	.read = seq_read,
 	.llseek = no_llseek,
-	.release = seq_release,
+	.release = single_release,
 };
 
 static void print_one_rcu_pending(struct seq_file *m, struct rcu_data *rdp)