}
EXPORT_SYMBOL_GPL(ocfs2_dlm_dump_lksb);
+int ocfs2_stack_supports_plocks(void)
+{
+ return active_stack && active_stack->sp_ops->plock;
+}
+EXPORT_SYMBOL_GPL(ocfs2_stack_supports_plocks);
+
+/*
+ * ocfs2_plock() can only be safely called if
+ * ocfs2_stack_supports_plocks() returned true
+ */
+int ocfs2_plock(struct ocfs2_cluster_connection *conn, u64 ino,
+ struct file *file, int cmd, struct file_lock *fl)
+{
+ WARN_ON_ONCE(active_stack->sp_ops->plock == NULL);
+ if (active_stack->sp_ops->plock)
+ return active_stack->sp_ops->plock(conn, ino, file, cmd, fl);
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL_GPL(ocfs2_plock);
+
int ocfs2_cluster_connect(const char *stack_name,
const char *group,
int grouplen,