Re: [Qemu-devel] [PATCH for 2.9 v3 02/10] block: Quiesce old aio context during bdrv_set_aio_context

[Stefan Hajnoczi]

On Mon, Apr 10, 2017 at 11:05:34PM +0800, Fam Zheng wrote:
> The fact that the bs->aio_context is changing can confuse the dataplane
> iothread, because of the now fine granularity aio context lock.
> bdrv_drain should rather be a bdrv_drained_begin/end pair, but since
> bs->aio_context is changing, we can just use aio_disable_external and
> bdrv_parent_drained_begin.
> 
> Reported-by: Ed Swierk <address@hidden>
> Signed-off-by: Fam Zheng <address@hidden>
> ---
>  block.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)

Reviewed-by: Stefan Hajnoczi <address@hidden>

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