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

Avi Kivity
2010-01-21T17:47:45Z

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.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.