static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
			       uint blk)
{
	char *tmpbuf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
	struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
	uint nextblk = le32_to_cpu(dh->dqdh_next_free);
	uint prevblk = le32_to_cpu(dh->dqdh_prev_free);
	int err;

	if (!tmpbuf)
		return -ENOMEM;
	if (nextblk) {
		err = read_blk(info, nextblk, tmpbuf);
		if (err < 0)
			goto out_buf;
		((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_prev_free =
							dh->dqdh_prev_free;
		err = write_blk(info, nextblk, tmpbuf);
		if (err < 0)
			goto out_buf;
	}
	if (prevblk) {
		err = read_blk(info, prevblk, tmpbuf);
		if (err < 0)
			goto out_buf;
		((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_next_free =
							dh->dqdh_next_free;
		err = write_blk(info, prevblk, tmpbuf);
		if (err < 0)
			goto out_buf;
	} else {
		info->dqi_free_entry = nextblk;
		mark_info_dirty(info->dqi_sb, info->dqi_type);
	}
	kfree(tmpbuf);
	dh->dqdh_next_free = dh->dqdh_prev_free = cpu_to_le32(0);
	/* No matter whether write succeeds block is out of list */
	if (write_blk(info, blk, buf) < 0)
		quota_error(info->dqi_sb, "Can't write block (%u) "
			    "with free entries", blk);
	return 0;
out_buf:
	kfree(tmpbuf);
	return err;
}
static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
			       uint blk)
{
	char *tmpbuf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
	struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
	uint nextblk = le32_to_cpu(dh->dqdh_next_free);
	uint prevblk = le32_to_cpu(dh->dqdh_prev_free);
	int err;

	if (!tmpbuf)
		return -ENOMEM;
	if (nextblk) {
		err = read_blk(info, nextblk, tmpbuf);
		if (err < 0)
			goto out_buf;
		((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_prev_free =
							dh->dqdh_prev_free;
		err = write_blk(info, nextblk, tmpbuf);
		if (err < 0)
			goto out_buf;
	}
	if (prevblk) {
		err = read_blk(info, prevblk, tmpbuf);
		if (err < 0)
			goto out_buf;
		((struct qt_disk_dqdbheader *)tmpbuf)->dqdh_next_free =
							dh->dqdh_next_free;
		err = write_blk(info, prevblk, tmpbuf);
		if (err < 0)
			goto out_buf;
	} else {
		info->dqi_free_entry = nextblk;
		mark_info_dirty(info->dqi_sb, info->dqi_type);
	}
	kfree(tmpbuf);
	dh->dqdh_next_free = dh->dqdh_prev_free = cpu_to_le32(0);
	 
	if (write_blk(info, blk, buf) < 0)
		quota_error(info->dqi_sb, "Can't write block (%u) "
			    "with free entries", blk);
	return 0;
out_buf:
	kfree(tmpbuf);
	return err;
}