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

*** 201,211 ****
                  zfs_close(zhp);
                  return (-1);
          }
  
          p = strchr(snapname, '@') + 1;
!         if (zfs_hold(zhp, p, jname, recursive, B_FALSE, cleanup_fd) != 0) {
                  NDMP_LOG(LOG_ERR, "Cannot hold snapshot %s", p);
                  zfs_close(zhp);
                  return (-1);
          }
          zfs_close(zhp);
--- 201,211 ----
                  zfs_close(zhp);
                  return (-1);
          }
  
          p = strchr(snapname, '@') + 1;
!         if (zfs_hold(zhp, p, jname, recursive, cleanup_fd) != 0) {
                  NDMP_LOG(LOG_ERR, "Cannot hold snapshot %s", p);
                  zfs_close(zhp);
                  return (-1);
          }
          zfs_close(zhp);