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SubjectRe: async I/O seems to be blocking on 2.6.15
Jens Axboe wrote:
> You could optimistically retry when you had reaped some completed
> events, or use some controlled way of blocking for free request
> notification. There are many ways, most of them share the fact that the
> time between notification and new io_submit() may change the picture, in
> which case you'd get EAGAIN once more.
>
> The important bit is imho to make the blocking at least deterministic.
> At some point you _have_ to block for resources, but it's not very
> polite to be blocking for a considerable time indeterministically.
>

Right, but there currently exists no mechanism for waiting until there
is room in the queue is there? My point was that this would be required
in order to return EAGAIN.

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