3740 Poor ZFS send / receive performance due to snapshot hold / release processing
Submitted by: Steven Hartland <steven.hartland@multiplay.co.uk>

*** 23,32 ****
--- 23,33 ----
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
   * Copyright (c) 2012 by Delphix. All rights reserved.
   * Copyright 2012 Milan Jurik. All rights reserved.
   * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+  * Copyright (c) 2013 Steven Hartland.  All rights reserved.
   */
  
  #include <assert.h>
  #include <ctype.h>
  #include <errno.h>
*** 5162,5173 ****
                  if (zhp == NULL) {
                          ++errors;
                          continue;
                  }
                  if (holding) {
!                         if (zfs_hold(zhp, delim+1, tag, recursive,
!                             B_FALSE, -1) != 0)
                                  ++errors;
                  } else {
                          if (zfs_release(zhp, delim+1, tag, recursive) != 0)
                                  ++errors;
                  }
--- 5163,5173 ----
                  if (zhp == NULL) {
                          ++errors;
                          continue;
                  }
                  if (holding) {
!                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
                                  ++errors;
                  } else {
                          if (zfs_release(zhp, delim+1, tag, recursive) != 0)
                                  ++errors;
                  }