[Qemu-devel] Re: [PATCH v7 4/6] char: Add qemu_chr_write_nb() for nonblocking writes

[Anthony Liguori]

On 05/05/2010 01:43 PM, Gerd Hoffmann wrote:
> On 05/05/10 15:53, Anthony Liguori wrote:
> > This patch adds optional control flow in a pretty crufty way to *some*
> > backends but not all. This just adds a bunch of complexity that will
> > certainly introduce bugs.
>
> Amit plans to add support to the others as well.  Beside that there is 
> a clearly defined backup plan:  In case the non-blocking interface 
> isn't supported by $chardev it will fallback to use the blocking mode.

If we have a second interface, we'll have two interfaces forever.  I'd 
rather see us aggressive remove the blocking interface instead of 
introducing a second interface.

Regards,

Anthony Liguori

> cheers,
>   Gerd