Re: [PATCHv2 1/3] eventfd: allow atomic read and waitqueue remove

Davide Libenzi
2010-01-21T17:50:39Z

On Thu, 21 Jan 2010, Avi Kivity wrote:

> On 01/21/2010 07:32 PM, Michael S. Tsirkin wrote:
> >
> > > Can't you read from the file?
> > >
> > IMO no, the read could block.
> >
>
> But you're in process context. An eventfd never blocks.

Can you control the eventfd flags? Because if yes, O_NONBLOCK will never
block.

- Davide