e2fs_i_bswap
void e2fs_i_bswap(struct m_ext2fs *, struct ext2fs_dinode *, struct ext2fs_dinode *);
# define e2fs_iload(fs, old, new) e2fs_i_bswap((fs), (old), (new))
# define e2fs_isave(fs, old, new) e2fs_i_bswap((fs), (old), (new))