affs_insert_hash
extern int affs_insert_hash(struct inode *inode, struct buffer_head *bh);
retval = affs_insert_hash(dir, bh);
retval = affs_insert_hash(dir, bh);
retval = affs_insert_hash(new_dir, bh);
retval = affs_insert_hash(new_dir, bh_old);
retval = affs_insert_hash(old_dir, bh_new);