8115 parallel zfs mount

*** 27,36 ****
--- 27,37 ----
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   *
   * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
   * Copyright 2016 Joyent, Inc.
+  * Copyright 2017 RackTop Systems.
   */
  
  #ifndef _SYS_CMN_ERR_H
  #define _SYS_CMN_ERR_H
  
*** 38,47 ****
--- 39,52 ----
  #include <sys/va_list.h>
  #endif
  
  #include <sys/dditypes.h>
  
+ #if !defined(_ASM) && defined(_FAKE_KERNEL)
+ #include <stdio.h>
+ #endif
+ 
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* Common error handling severity levels */
*** 56,77 ****
  
  /*PRINTFLIKE2*/
  extern void cmn_err(int, const char *, ...)
      __KPRINTFLIKE(2);
  
  extern void vzcmn_err(zoneid_t, int, const char *, __va_list)
      __KVPRINTFLIKE(3);
  
  extern void dev_err(dev_info_t *, int, char *, ...)
      __KPRINTFLIKE(3);
  
  extern void vdev_err(dev_info_t *, int, const char *, __va_list)
      __KVPRINTFLIKE(3);
  
- extern void vcmn_err(int, const char *, __va_list)
-     __KVPRINTFLIKE(2);
- 
  /*PRINTFLIKE3*/
  extern void zcmn_err(zoneid_t, int, const char *, ...)
      __KPRINTFLIKE(3);
  
  /*PRINTFLIKE1*/
--- 61,88 ----
  
  /*PRINTFLIKE2*/
  extern void cmn_err(int, const char *, ...)
      __KPRINTFLIKE(2);
  
+ extern void vcmn_err(int, const char *, __va_list)
+     __KVPRINTFLIKE(2);
+ 
+ #ifndef _FAKE_KERNEL
+ /*
+  * The following functions are either absent from libfakekernel
+  * or have different prototypes from the versions in libc.
+  */
+ 
  extern void vzcmn_err(zoneid_t, int, const char *, __va_list)
      __KVPRINTFLIKE(3);
  
  extern void dev_err(dev_info_t *, int, char *, ...)
      __KPRINTFLIKE(3);
  
  extern void vdev_err(dev_info_t *, int, const char *, __va_list)
      __KVPRINTFLIKE(3);
  
  /*PRINTFLIKE3*/
  extern void zcmn_err(zoneid_t, int, const char *, ...)
      __KPRINTFLIKE(3);
  
  /*PRINTFLIKE1*/
*** 104,113 ****
--- 115,126 ----
  extern char *sprintf(char *, const char *, ...)
      __KPRINTFLIKE(2);
  extern char *vsprintf(char *, const char *, __va_list)
      __KVPRINTFLIKE(2);
  
+ #endif /* !_FAKE_KERNEL */
+ 
  /*PRINTFLIKE1*/
  extern void panic(const char *, ...)
      __KPRINTFLIKE(1) __NORETURN;
  
  extern void vpanic(const char *, __va_list)