ocfs2: fix a misleading variable name

a local variable "dlm_version" is used as a fs locking version.
rename it fs_version.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

fs/ocfs2/stack_o2cb.c

@@ -277,7 +277,7 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
 	u32 dlm_key;
 	struct dlm_ctxt *dlm;
 	struct o2dlm_private *priv;
-	struct dlm_protocol_version dlm_version;
+	struct dlm_protocol_version fs_version;
 
 	BUG_ON(conn == NULL);
 	BUG_ON(o2cb_stack.sp_proto == NULL);
@@ -304,18 +304,18 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
 	/* used by the dlm code to make message headers unique, each
 	 * node in this domain must agree on this. */
 	dlm_key = crc32_le(0, conn->cc_name, conn->cc_namelen);
-	dlm_version.pv_major = conn->cc_version.pv_major;
-	dlm_version.pv_minor = conn->cc_version.pv_minor;
+	fs_version.pv_major = conn->cc_version.pv_major;
+	fs_version.pv_minor = conn->cc_version.pv_minor;
 
-	dlm = dlm_register_domain(conn->cc_name, dlm_key, &dlm_version);
+	dlm = dlm_register_domain(conn->cc_name, dlm_key, &fs_version);
 	if (IS_ERR(dlm)) {
 		rc = PTR_ERR(dlm);
 		mlog_errno(rc);
 		goto out_free;
 	}
 
-	conn->cc_version.pv_major = dlm_version.pv_major;
-	conn->cc_version.pv_minor = dlm_version.pv_minor;
+	conn->cc_version.pv_major = fs_version.pv_major;
+	conn->cc_version.pv_minor = fs_version.pv_minor;
 	conn->cc_lockspace = dlm;
 
 	dlm_register_eviction_cb(dlm, &priv->op_eviction_cb);