static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
	handle_t *handle;
	struct inode *inode;
	int err, retries = 0;

	if (EXT4_DIR_LINK_MAX(dir))
		return -EMLINK;

	dquot_initialize(dir);

retry:
	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
					EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb));
	if (IS_ERR(handle))
		return PTR_ERR(handle);

	if (IS_DIRSYNC(dir))
		ext4_handle_sync(handle);

	inode = ext4_new_inode(handle, dir, S_IFDIR | mode,
			       &dentry->d_name, 0, NULL);
	err = PTR_ERR(inode);
	if (IS_ERR(inode))
		goto out_stop;

	inode->i_op = &ext4_dir_inode_operations;
	inode->i_fop = &ext4_dir_operations;
	err = ext4_init_new_dir(handle, dir, inode);
	if (err)
		goto out_clear_inode;
	err = ext4_mark_inode_dirty(handle, inode);
	if (!err)
		err = ext4_add_entry(handle, dentry, inode);
	if (err) {
out_clear_inode:
		clear_nlink(inode);
		unlock_new_inode(inode);
		ext4_mark_inode_dirty(handle, inode);
		iput(inode);
		goto out_stop;
	}
	ext4_inc_count(handle, dir);
	ext4_update_dx_flag(dir);
	err = ext4_mark_inode_dirty(handle, dir);
	if (err)
		goto out_clear_inode;
	unlock_new_inode(inode);
	d_instantiate(dentry, inode);
out_stop:
	ext4_journal_stop(handle);
	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
		goto retry;
	return err;
}
static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
	handle_t *handle;
	struct inode *inode;
	int err, retries = 0;

	if (EXT4_DIR_LINK_MAX(dir))
		return -EMLINK;

	dquot_initialize(dir);

retry:
	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
					EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb));
	if (IS_ERR(handle))
		return PTR_ERR(handle);

	if (IS_DIRSYNC(dir))
		ext4_handle_sync(handle);

	inode = ext4_new_inode(handle, dir, S_IFDIR | mode,
			       &dentry->d_name, 0, NULL);
	err = PTR_ERR(inode);
	if (IS_ERR(inode))
		goto out_stop;

	inode->i_op = &ext4_dir_inode_operations;
	inode->i_fop = &ext4_dir_operations;
	err = ext4_init_new_dir(handle, dir, inode);
	if (err)
		goto out_clear_inode;
	err = ext4_mark_inode_dirty(handle, inode);
	if (!err)
		err = ext4_add_entry(handle, dentry, inode);
	if (err) {
out_clear_inode:
		clear_nlink(inode);
		unlock_new_inode(inode);
		ext4_mark_inode_dirty(handle, inode);
		iput(inode);
		goto out_stop;
	}
	ext4_inc_count(handle, dir);
	ext4_update_dx_flag(dir);
	err = ext4_mark_inode_dirty(handle, dir);
	if (err)
		goto out_clear_inode;
	unlock_new_inode(inode);
	d_instantiate(dentry, inode);
out_stop:
	ext4_journal_stop(handle);
	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
		goto retry;
	return err;
}