3741 zfs needs better comments
Submitted by:   Will Andrews <willa@spectralogic.com>
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Alan Somers <alans@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>

*** 24,33 ****
--- 24,35 ----
   * Copyright (c) 2013 by Delphix. All rights reserved.
   * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
   */
  
  /*
+  * SPA: Storage Pool Allocator
+  *
   * This file contains all the routines used when modifying on-disk SPA state.
   * This includes opening, importing, destroying, exporting a pool, and syncing a
   * pool.
   */