8115 parallel zfs mount

*** 20,29 ****
--- 20,30 ----
   */
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
+  * Copyright (c) 2017 by Delphix. All rights reserved.
   */
  
  #include <sys/types.h>
  #include <sys/t_lock.h>
  #include <sys/param.h>
*** 119,129 ****
  
  static vfsdef_t vfw = {
          VFSDEF_VERSION,
          "udfs",
          udfinit,
!         VSW_HASPROTO|VSW_CANREMOUNT|VSW_STATS|VSW_CANLOFI,
          &udfs_mntopts
  };
  
  static mntopts_t udfs_mntopts = {
          0,
--- 120,130 ----
  
  static vfsdef_t vfw = {
          VFSDEF_VERSION,
          "udfs",
          udfinit,
!         VSW_HASPROTO|VSW_CANREMOUNT|VSW_STATS|VSW_CANLOFI|VSW_MOUNTDEV,
          &udfs_mntopts
  };
  
  static mntopts_t udfs_mntopts = {
          0,
*** 487,498 ****
  
  
  
  /* ARGSUSED */
  static int32_t
! udf_vget(struct vfs *vfsp,
!         struct vnode **vpp, struct fid *fidp)
  {
          int32_t error = 0;
          struct udf_fid *udfid;
          struct udf_vfs *udf_vfsp;
          struct ud_inode *ip;
--- 488,498 ----
  
  
  
  /* ARGSUSED */
  static int32_t
! udf_vget(struct vfs *vfsp, struct vnode **vpp, struct fid *fidp)
  {
          int32_t error = 0;
          struct udf_fid *udfid;
          struct udf_vfs *udf_vfsp;
          struct ud_inode *ip;
*** 610,621 ****
  
  /* ------------------------- local routines ------------------------- */
  
  
  static int32_t
! ud_mountfs(struct vfs *vfsp,
!         enum whymountroot why, dev_t dev, char *name,
          struct cred *cr, int32_t isroot)
  {
          struct vnode *devvp = NULL;
          int32_t error = 0;
          int32_t needclose = 0;
--- 610,620 ----
  
  /* ------------------------- local routines ------------------------- */
  
  
  static int32_t
! ud_mountfs(struct vfs *vfsp, enum whymountroot why, dev_t dev, char *name,
      struct cred *cr, int32_t isroot)
  {
          struct vnode *devvp = NULL;
          int32_t error = 0;
          int32_t needclose = 0;