Re: [PATCH 3/3] xfs: convert buffer cache to use high order folios

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

> +	int		length = BBTOB(bp->b_length);
> +	int		order;
> +
> +	order = ilog2(length);
> +	if ((1 << order) < length)
> +		order = ilog2(length - 1) + 1;
> +
> +	if (order <= PAGE_SHIFT)
> +		order = 0;
> +	else
> +		order -= PAGE_SHIFT;

Shouldn't this simply use get_order()?