[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20080109090442.GA1746@ff.dom.local>
Date: Wed, 9 Jan 2008 10:04:42 +0100
From: Jarek Poplawski <jarkao2@...il.com>
To: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc: mingo@...e.hu, akpm@...ux-foundation.org,
just.for.lkml@...glemail.com, tomof@....org,
herbert@...dor.apana.org.au, linux-kernel@...r.kernel.org,
neilb@...e.de, bfields@...ldses.org, netdev@...r.kernel.org,
tom@...ngridcomputing.com
Subject: Re: 2.6.24-rc6-mm1
On Wed, Jan 09, 2008 at 08:57:53AM +0900, FUJITA Tomonori wrote:
...
> diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
> new file mode 100644
> index 0000000..495575a
> --- /dev/null
> +++ b/lib/iommu-helper.c
> @@ -0,0 +1,80 @@
> +/*
> + * IOMMU helper functions for the free area management
> + */
> +
> +#include <linux/module.h>
> +#include <linux/bitops.h>
> +
> +static unsigned long find_next_zero_area(unsigned long *map,
> + unsigned long size,
> + unsigned long start,
> + unsigned int nr,
> + unsigned long align_mask)
> +{
> + unsigned long index, end, i;
> +again:
> + index = find_next_zero_bit(map, size, start);
> +
> + /* Align allocation */
> + index = (index + align_mask) & ~align_mask;
> +
> + end = index + nr;
> + if (end >= size)
> + return -1;
This '>=' looks doubtful to me, e.g.:
map points to 0s only, size = 64, nr = 64,
we get: index = 0; end = 64;
and: return -1 ?!
Regards,
Jarek P.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists