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Date: Mon, 9 Jan 2017 13:21:47 +0000
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20170109132147.GD30228@stefanha-x1.localdomain>
References: <20161129113334.605-1-pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [Qemu-block] [PATCH for-2.9] block: get rid of
 bdrv_io_unplugged_begin/end
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org


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On Tue, Nov 29, 2016 at 12:33:34PM +0100, Paolo Bonzini wrote:
> bdrv_io_plug and bdrv_io_unplug are only called (via their
> BlockBackend equivalents) after starting asynchronous I/O.
> bdrv_drain is not going to be called while they are running,
> because---even if a coroutine runs for some reason---it will
> only drain in the next iteration of the event loop through
> bdrv_co_yield_to_drain.
>=20
> So this mechanism is unnecessary, get rid of it.
>=20
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  block/io.c                | 41 ++---------------------------------------
>  include/block/block.h     |  2 --
>  include/block/block_int.h |  3 +--
>  3 files changed, 3 insertions(+), 43 deletions(-)

Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block

Stefan

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