Re: [PATCH 3/3] swiotlb: replace free array with bitmap

[Muli Ben-Yehuda <muli@il.ibm.com>]

On Thu, May 04, 2006 at 04:00:17PM -0500, Jon Mason wrote:

> +		index = find_next_zero_string(io_tlb_list, io_tlb_index,
> +				io_tlb_nslabs, nslots);
> +		if (index == ~0U) {
> +			index = find_next_zero_string(io_tlb_list, 0,
> +					io_tlb_nslabs, nslots);
> +			if (index == ~0U)
> +				return NULL;

If we run out of space in the bitmap we return here with the
io_tlb_lock held. Also, an informative message saying that we've run
out of space in the bitmap is probably a good idea.

Cheers,
Muli


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/