print pgname using cephfs.

Using 'cephfs show_location/map' to print pgname.

Jianpeng Ma (2):
libceph: Add a new func ceph_calc_ceph_temp_pg and export it.
ceph: Add pg_name filed in struct ceph_ioctl_dataloc.

 fs/ceph/ioctl.c             | 10 +++++++++-
 fs/ceph/ioctl.h             |  1 +
 include/linux/ceph/osdmap.h |  2 ++
 net/ceph/osdmap.c           | 24 ++++++++++++++++++++++++
 4 files changed, 36 insertions(+), 1 deletion(-)

1.8.3.rc1.44.gb387c77

Thanks!
Jianpeng Ma