4374 dn_free_ranges should use range_tree_t
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Dan McDonald <danmcd@omniti.com>

*** 21,31 ****
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  /*
!  * Copyright (c) 2013 by Delphix. All rights reserved.
   */
  
  #include <sys/zfs_context.h>
  #include <sys/spa.h>
  #include <sys/dmu.h>
--- 21,31 ----
  /*
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  /*
!  * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
   */
  
  #include <sys/zfs_context.h>
  #include <sys/spa.h>
  #include <sys/dmu.h>
*** 265,275 ****
                   * caveat is that the new block sizes must be a
                   * power of 2 so that old software can append to the file,
                   * adding more blocks. The block size can grow until it
                   * reaches space_map_max_blksz.
                   */
!                 newsz = ISP2(size) ? size : 1ULL << highbit(size);
                  if (newsz > space_map_max_blksz)
                          newsz = space_map_max_blksz;
  
                  VERIFY0(dmu_object_set_blocksize(sm->sm_os,
                      space_map_object(sm), newsz, 0, tx));
--- 265,275 ----
                   * caveat is that the new block sizes must be a
                   * power of 2 so that old software can append to the file,
                   * adding more blocks. The block size can grow until it
                   * reaches space_map_max_blksz.
                   */
!                 newsz = ISP2(size) ? size : 1ULL << highbit64(size);
                  if (newsz > space_map_max_blksz)
                          newsz = space_map_max_blksz;
  
                  VERIFY0(dmu_object_set_blocksize(sm->sm_os,
                      space_map_object(sm), newsz, 0, tx));