re #13613 rb4516 Tunables needs volatile keyword

*** 21,30 ****
--- 21,33 ----
   */
  /*
   * Copyright 1999 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
+ /*
+  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
+  */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  /*
*** 138,148 ****
  };
  
  extern struct dqhead dqhead[NDQHASH];
  
  extern struct dquot *dquot, *dquotNDQUOT;
! extern int ndquot;
  extern krwlock_t dq_rwlock;             /* quota sub-system init lock */
  extern int quotas_initialized;          /* quota sub-system init flag */
  
  extern void qtinit();
  extern void qtinit2();
--- 141,151 ----
  };
  
  extern struct dqhead dqhead[NDQHASH];
  
  extern struct dquot *dquot, *dquotNDQUOT;
! extern volatile int ndquot;
  extern krwlock_t dq_rwlock;             /* quota sub-system init lock */
  extern int quotas_initialized;          /* quota sub-system init flag */
  
  extern void qtinit();
  extern void qtinit2();