ACK: [PATCH 1/2] Revert "UBUNTU: SAUCE: Improve Amazon EBS performance for EC2 -- fixes for v3.5-rc6"

[Colin Ian King]

On 17/09/12 16:26, Stefan Bader wrote:
> This reverts commit be1d52ea78d9a08827fd0f2945e610d794ad718a as it
> is not needed/used.
>
> Signed-off-by: Stefan Bader <stefan.bader at canonical.com>
> ---
>   drivers/block/xen-blkfront.c |    3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
> index 72edd45..43860d3 100644
> --- a/drivers/block/xen-blkfront.c
> +++ b/drivers/block/xen-blkfront.c
> @@ -763,7 +763,6 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
>   	unsigned long flags;
>   	struct blkfront_info *info = (struct blkfront_info *)dev_id;
>   	int error;
> -	int ring_size = __RING_SIZE((struct blkif_sring *)0, info->num_ring_pages * PAGE_SIZE);
>
>   	spin_lock_irqsave(&info->io_lock, flags);
>
> @@ -786,7 +785,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
>   		 * never have given to it (we stamp it up to BLK_RING_SIZE -
>   		 * look in get_id_from_freelist.
>   		 */
> -		if (id >= ring_size) {
> +		if (id >= BLK_RING_SIZE) {
>   			WARN(1, "%s: response to %s has incorrect id (%ld)\n",
>   			     info->gd->disk_name, op_name(bret->operation), id);
>   			/* We can't safely get the 'struct request' as
>