What kstat counters make up mdb ::memstat "ZFS File Data"?

What kstat counters make up "ZFS File Data"?
echo "::memstat"| mdb -k
Page Summary                Pages                MB  %Tot
------------     ----------------  ----------------  ----
Kernel                    1010796              3948   24%
ZFS File Data             2082393              8134   50%
Anon                       218252               852    5%
Exec and libs               54729               213    1%
Page cache                 166022               648    4%
Free (cachelist)           245398               958    6%
Free (freelist)            364371              1423    9%

Total                     4141961             16179
Physical                  4053870             15835


uname -a
SunOS beaker 5.10 Generic_148889-04 i86pc i386 i86pc
cat /etc/release
                    Oracle Solaris 10 8/11 s10x_u10wos_17b X86
  Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
                            Assembled 23 August 2011

Thanks,
GlenG