rpc_get_inode
inode = rpc_get_inode(sb, S_IFDIR | 0555);
inode = rpc_get_inode(dir->i_sb, S_IFREG | mode);
inode = rpc_get_inode(dir->i_sb, S_IFDIR | mode);
inode = rpc_get_inode(dir->i_sb, umode);