On 09/03/2016 04:19, Fam Zheng wrote:
>> > +/* The I/O operation is not finished until the callback returns.
>> > + * If we call qemu_coroutine_enter here, there is the possibility
>> > + * of a deadlock when the coroutine calls bdrv_drained_begin.
>> > + */
>> > +op->co_enter
On Tue, 02/16 18:56, Paolo Bonzini wrote:
> mirror is calling bdrv_drain from an AIO callback---more precisely,
> the bdrv_drain happens far away from the AIO callback, in the coroutine that
> the AIO callback enters.
>
> This used to be okay because bdrv_drain more or less tried to guess
> when a
mirror is calling bdrv_drain from an AIO callback---more precisely,
the bdrv_drain happens far away from the AIO callback, in the coroutine that
the AIO callback enters.
This used to be okay because bdrv_drain more or less tried to guess
when all AIO callbacks were done; however it will cause a de
