Re: [Xen-devel] [[PATCH -v2]] XenBus: Don't wait for the producer to fill the ring if

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 23/05/17 16:14, Jan Beulich wrote:
>>>> On 23.05.17 at 16:12, <anshul.makkar@xxxxxxxxxx> wrote:
>> The condition: if there is a space in the ring then wait for the producer
>> to fill the ring also evaluates to true even if the ring if full. It
>> leads to a deadlock where producer is waiting for consumer
>> to consume the items and consumer is waiting for producer to fill the ring.
>>
>> Fix for the issue: check if the ring is full and then break from
>> the loop to consume the items from the ring.
>> eg. case: prod = 1272, cons = 248.
>>
>> Signed-off-by: Anshul Makkar <anshul.makkar@xxxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> Julien,
>
> do you want to consider this for 4.9?

I'd agree with including this in 4.9

~Andrew

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel