Re: [Qemu-devel] barriers: block layer preparations

[Avi Kivity]

Jamie Lokier wrote:
> Avi Kivity wrote:
>   
> > An alternative approach is to add a new op, bdrv_aio_barrier(), 
> > submitted immediately after the write.  It's probably more complicated 
> > overall.
> >     
>
> Is it ok to submit a zero-length bdrv_aio_writev(), when you need a
> barrier without data?
>   

We could make it so.  But my point was to make barriers and writes 
orthogonal.

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error compiling committee.c: too many arguments to function