smb2_set_sparse
smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
rc = smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
smb2_set_sparse(xid, tcon, cfile, inode, false);
smb2_set_sparse(xid, tcon, cfile, inode, false);