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

From: Paolo Bonzini
Subject: Re: [Qemu-block] [PATCH v11 01/19] block: Add bdrv_drain_all_{begin, end}()
Date: Tue, 25 Oct 2016 16:52:52 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

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.


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