re #8564, rb4224 "mutex_enter: bad mutex" panic when under heavy load

@@ -16,10 +16,11 @@
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
+
 /*
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2013, Nexenta Systems, Inc. All rights reserved.
  */
 

@@ -1246,11 +1247,11 @@
 
         mutex_enter(&ptask->pt_sess->ps_mutex);
         mutex_enter(&ptask->pt_mutex);
         if (avl_find(&ptask->pt_sess->ps_task_list, ptask, &where) == NULL) {
                 pppt_task_update_state(ptask, PTS_ACTIVE);
-                /* Manually increment refcnt, sincd we hold the mutex... */
+                /* Manually increment refcnt, since we hold the mutex... */
                 ptask->pt_refcnt++;
                 avl_insert(&ptask->pt_sess->ps_task_list, ptask, where);
                 mutex_exit(&ptask->pt_mutex);
                 mutex_exit(&ptask->pt_sess->ps_mutex);
                 return (PPPT_STATUS_SUCCESS);