pnfs-obj: define per-inode private structure

allocate and deallocate per-inode private pnfs_layout_hdr
in preparation for I/O implementation.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>

diff --cc fs/nfs/objlayout/objio_osd.c
Simple merge

diff --cc fs/nfs/objlayout/objlayout.c
Simple merge

diff --cc fs/nfs/objlayout/objlayout.h
Simple merge