8115 parallel zfs mount

*** 24,33 ****
--- 24,34 ----
   * Use is subject to license terms.
   */
  
  /*
   * Copyright (c) 2014 by Delphix. All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
*** 132,142 ****
   * true if one and only one bit is set in u.
   */
  #define BIT_ONLYONESET(u) \
          ((((u) == 0) ? 0 : ((u) & ((u) - 1)) == 0))
  
! #if defined(_KERNEL) && !defined(_ASM)
  #include <sys/atomic.h>
  
  /*
   * return next available bit index from map with specified number of bits
   */
--- 133,143 ----
   * true if one and only one bit is set in u.
   */
  #define BIT_ONLYONESET(u) \
          ((((u) == 0) ? 0 : ((u) & ((u) - 1)) == 0))
  
! #if (defined(_KERNEL) || defined(_FAKE_KERNEL)) && !defined(_ASM)
  #include <sys/atomic.h>
  
  /*
   * return next available bit index from map with specified number of bits
   */
*** 186,196 ****
   * Extracts bits between index h (high, inclusive) and l (low, exclusive) from
   * u, which must be an unsigned integer.
   */
  #define BITX(u, h, l)   (((u) >> (l)) & ((1LU << ((h) - (l) + 1LU)) - 1LU))
  
! #endif  /* _KERNEL && !_ASM */
  
  #ifdef  __cplusplus
  }
  #endif
  
--- 187,197 ----
   * Extracts bits between index h (high, inclusive) and l (low, exclusive) from
   * u, which must be an unsigned integer.
   */
  #define BITX(u, h, l)   (((u) >> (l)) & ((1LU << ((h) - (l) + 1LU)) - 1LU))
  
! #endif  /* (_KERNEL || _FAKE_KERNEL) && !_ASM */
  
  #ifdef  __cplusplus
  }
  #endif