Re: [Qemu-devel] [PATCH v11 01/19] block: Add bdrv_drain_all_{begin, end}()

[Paolo Bonzini]

On 25/10/2016 16:48, Alberto Garcia wrote:
> And how about the rest of the things that are going on in
> bdrv_drain_all_begin()?
> 
>         bdrv_parent_drained_begin(bs);

No BlockBackend yet, and BlockDriverStates have been quiesced already,
so that's okay.

>         bdrv_io_unplugged_begin(bs);

No I/O yet, so that's okay.

>         bdrv_drain_recurse(bs);

Children have been created before, so they're already quiescent.

>         aio_disable_external(aio_context);

This is also a hack for what should be in BlockBackend---which means
that we're safe because there's no BlockBackend yet.

Paolo