On Wed, Jun 24, 2015 at 10:47:47AM +0800, Fam Zheng wrote:
> On Tue, 06/16 17:07, Stefan Hajnoczi wrote:
> > On Tue, Jun 02, 2015 at 11:21:51AM +0800, Fam Zheng wrote:
> > 2. Is this about thread safety? (No, it's about exclusive access to a
> >BDS *within* the AioContext.)
>
> As it has to q
On 24/06/2015 04:47, Fam Zheng wrote:
>> > 2. Is this about thread safety? (No, it's about exclusive access to a
>> >BDS *within* the AioContext.)
> As it has to quiesce iothreads as well (for now it's even more urgent than
> exclusive access within the same AioContext), I'd rather take it a
On Wed, 06/24 10:47, Fam Zheng wrote:
> On Tue, 06/16 17:07, Stefan Hajnoczi wrote:
> > On Tue, Jun 02, 2015 at 11:21:51AM +0800, Fam Zheng wrote:
> > > +/**
> > > + * bdrv_lock:
> > > + *
> > > + * Begin a temporary exclusive accessing by locking the BDS.
> > > + */
> > > +void bdrv_lock(BlockDriv
On Tue, 06/16 17:07, Stefan Hajnoczi wrote:
> On Tue, Jun 02, 2015 at 11:21:51AM +0800, Fam Zheng wrote:
> > +/**
> > + * bdrv_lock:
> > + *
> > + * Begin a temporary exclusive accessing by locking the BDS.
> > + */
> > +void bdrv_lock(BlockDriverState *bs);
> > +
> > +/**
> > + * bdrv_unlock:
> >
On Tue, Jun 02, 2015 at 11:21:51AM +0800, Fam Zheng wrote:
> +/**
> + * bdrv_lock:
> + *
> + * Begin a temporary exclusive accessing by locking the BDS.
> + */
> +void bdrv_lock(BlockDriverState *bs);
> +
> +/**
> + * bdrv_unlock:
> + *
> + * End a exclusive accessing.
> + */
> +void bdrv_unlock(Bl
