affs_iget
extern struct inode *affs_iget(struct super_block *sb,
dir = affs_iget(sb, be32_to_cpu(AFFS_TAIL(sb, link_bh)->parent));
inode = affs_iget(sb, ino);
parent = affs_iget(child->d_sb,
inode = affs_iget(sb, ino);
root_inode = affs_iget(sb, ctx->root_block);