--- zzzz-none-000/linux-3.10.107/fs/ocfs2/cluster/netdebug.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/ocfs2/cluster/netdebug.c	2021-02-04 17:41:59.000000000 +0000
@@ -185,29 +185,13 @@
 static int nst_fop_open(struct inode *inode, struct file *file)
 {
 	struct o2net_send_tracking *dummy_nst;
-	struct seq_file *seq;
-	int ret;
 
-	dummy_nst = kmalloc(sizeof(struct o2net_send_tracking), GFP_KERNEL);
-	if (dummy_nst == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	dummy_nst->st_task = NULL;
-
-	ret = seq_open(file, &nst_seq_ops);
-	if (ret)
-		goto out;
-
-	seq = file->private_data;
-	seq->private = dummy_nst;
+	dummy_nst = __seq_open_private(file, &nst_seq_ops, sizeof(*dummy_nst));
+	if (!dummy_nst)
+		return -ENOMEM;
 	o2net_debug_add_nst(dummy_nst);
 
-	dummy_nst = NULL;
-
-out:
-	kfree(dummy_nst);
-	return ret;
+	return 0;
 }
 
 static int nst_fop_release(struct inode *inode, struct file *file)
@@ -412,33 +396,27 @@
 	.show = sc_seq_show,
 };
 
-static int sc_common_open(struct file *file, struct o2net_sock_debug *sd)
+static int sc_common_open(struct file *file, int ctxt)
 {
+	struct o2net_sock_debug *sd;
 	struct o2net_sock_container *dummy_sc;
-	struct seq_file *seq;
-	int ret;
 
-	dummy_sc = kmalloc(sizeof(struct o2net_sock_container), GFP_KERNEL);
-	if (dummy_sc == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	dummy_sc->sc_page = NULL;
+	dummy_sc = kzalloc(sizeof(*dummy_sc), GFP_KERNEL);
+	if (!dummy_sc)
+		return -ENOMEM;
 
-	ret = seq_open(file, &sc_seq_ops);
-	if (ret)
-		goto out;
+	sd = __seq_open_private(file, &sc_seq_ops, sizeof(*sd));
+	if (!sd) {
+		kfree(dummy_sc);
+		return -ENOMEM;
+	}
 
-	seq = file->private_data;
-	seq->private = sd;
+	sd->dbg_ctxt = ctxt;
 	sd->dbg_sock = dummy_sc;
-	o2net_debug_add_sc(dummy_sc);
 
-	dummy_sc = NULL;
+	o2net_debug_add_sc(dummy_sc);
 
-out:
-	kfree(dummy_sc);
-	return ret;
+	return 0;
 }
 
 static int sc_fop_release(struct inode *inode, struct file *file)
@@ -453,16 +431,7 @@
 
 static int stats_fop_open(struct inode *inode, struct file *file)
 {
-	struct o2net_sock_debug *sd;
-
-	sd = kmalloc(sizeof(struct o2net_sock_debug), GFP_KERNEL);
-	if (sd == NULL)
-		return -ENOMEM;
-
-	sd->dbg_ctxt = SHOW_SOCK_STATS;
-	sd->dbg_sock = NULL;
-
-	return sc_common_open(file, sd);
+	return sc_common_open(file, SHOW_SOCK_STATS);
 }
 
 static const struct file_operations stats_seq_fops = {
@@ -474,16 +443,7 @@
 
 static int sc_fop_open(struct inode *inode, struct file *file)
 {
-	struct o2net_sock_debug *sd;
-
-	sd = kmalloc(sizeof(struct o2net_sock_debug), GFP_KERNEL);
-	if (sd == NULL)
-		return -ENOMEM;
-
-	sd->dbg_ctxt = SHOW_SOCK_CONTAINERS;
-	sd->dbg_sock = NULL;
-
-	return sc_common_open(file, sd);
+	return sc_common_open(file, SHOW_SOCK_CONTAINERS);
 }
 
 static const struct file_operations sc_seq_fops = {