8115 parallel zfs mount

*** 21,30 ****
--- 21,31 ----
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2012, 2017 by Delphix. All rights reserved.
   * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
   * Copyright (c) 2014 Integros [integros.com]
+  * Copyright 2017 RackTop Systems.
   */
  
  #include <sys/zfs_context.h>
  #include <sys/dbuf.h>
  #include <sys/dnode.h>
*** 57,67 ****
--- 58,70 ----
  static dnode_phys_t dnode_phys_zero;
  
  int zfs_default_bs = SPA_MINBLOCKSHIFT;
  int zfs_default_ibs = DN_MAX_INDBLKSHIFT;
  
+ #ifdef  _KERNEL
  static kmem_cbrc_t dnode_move(void *, void *, size_t, void *);
+ #endif  /* _KERNEL */
  
  static int
  dbuf_compare(const void *x1, const void *x2)
  {
          const dmu_buf_impl_t *d1 = x1;
*** 211,221 ****
--- 214,226 ----
  {
          ASSERT(dnode_cache == NULL);
          dnode_cache = kmem_cache_create("dnode_t",
              sizeof (dnode_t),
              0, dnode_cons, dnode_dest, NULL, NULL, NULL, 0);
+ #ifdef  _KERNEL
          kmem_cache_set_move(dnode_cache, dnode_move);
+ #endif  /* _KERNEL */
  }
  
  void
  dnode_fini(void)
  {
*** 695,704 ****
--- 700,710 ----
          uint64_t dms_dnode_rwlock;
          uint64_t dms_dnode_active;
  } dnode_move_stats;
  #endif  /* DNODE_STATS */
  
+ #ifdef  _KERNEL
  static void
  dnode_move_impl(dnode_t *odn, dnode_t *ndn)
  {
          int i;
  
*** 831,841 ****
           */
          ndn->dn_moved = 1;
          odn->dn_moved = (uint8_t)-1;
  }
  
- #ifdef  _KERNEL
  /*ARGSUSED*/
  static kmem_cbrc_t
  dnode_move(void *buf, void *newbuf, size_t size, void *arg)
  {
          dnode_t *odn = buf, *ndn = newbuf;
--- 837,846 ----