ROMFH_PAD
inode->i_metasize = (ROMFH_SIZE + nlen + 1 + ROMFH_PAD) & ROMFH_MASK;
pos = (ROMFH_SIZE + len + 1 + ROMFH_PAD) & ROMFH_MASK;
#define ROMFH_MASK (~ROMFH_PAD)