[Qemu-devel] Re: [PATCH 0/2] Fix immediate error handling on synthetic aios

[Anthony Liguori]

Avi Kivity wrote:
> The block layer can signal aio errors in two ways: by calling the completion
> function with a negative status code, or by returning a NULL aiocb.  Two of
> the synthetic aio implementations (the DMA API and the vectored aio bouncing)
> fail to handle the second case correctly, resulting in crashes when
> cancellation of a timed out request is attempted.
>
> I think the long term fix is to have the block layer signal errors in just
> one way -- by invoking the completion handler with a negative return code --
> but in the meanwhile, here are patches that add the required error checking.
>
> Avi Kivity (2):
>   Fix vectored aio bounce handling immediate errors
>   Fix DMA API when handling an immediate error from block layer
>
>  block.c       |    5 +++++
>  dma-helpers.c |   27 +++++++++++++++++++++------
>  2 files changed, 26 insertions(+), 6 deletions(-)
>   

Applied all.  Thanks.

Regards,

Anthony Liguori