Il 26/08/2014 11:21, Fam Zheng ha scritto:
> On Tue, 08/26 10:46, Paolo Bonzini wrote:
>> Il 26/08/2014 08:08, Fam Zheng ha scritto:
>>> +if (dbs->cancelled) {
>>> +ret = -ECANCELED;
>>> +}
>>
>> Why is dbs->cancelled necessary?
>
> Request may complete after bdrv_aio_cancel_async
On Tue, 08/26 10:46, Paolo Bonzini wrote:
> Il 26/08/2014 08:08, Fam Zheng ha scritto:
> > +if (dbs->cancelled) {
> > +ret = -ECANCELED;
> > +}
>
> Why is dbs->cancelled necessary?
Request may complete after bdrv_aio_cancel_async with other status, this flag
is checked to fix the
Il 26/08/2014 08:08, Fam Zheng ha scritto:
> +if (dbs->cancelled) {
> +ret = -ECANCELED;
> +}
Why is dbs->cancelled necessary?
> dma_bdrv_unmap(dbs);
> if (dbs->common.cb) {
> dbs->common.cb(dbs->common.opaque, ret);
> @@ -141,6 +148,9 @@ static void dma_bdrv_cb
Just forward the request to bdrv_aio_cancel_async. Use a flag to fix the
ret value in completion code. Also check memory address before calling
dma_memory_unmap.
Signed-off-by: Fam Zheng
---
dma-helpers.c | 28
1 file changed, 28 insertions(+)
diff --git a/dma-helpe
