On Wed, Jun 18, 2003 at 05:33:27PM -0700, John Myers wrote:
> The kernel would have to be substantially more complex to report all
> errors that could possibly be detected during queuing. The kernel could
> even detect success during queuing if it really tried.
The slippery slope isn't important. POSIX specifies EAGAIN
(you concede that), EBADF, and EINVAL against nbytes|offset|reqprio.
The kernel does these checks already (where applicable).
Anyway, a caller of io_submit() already has to handle errors.
Just like a short read, you always have to be wary of them.
Joel
--"Glory is fleeting, but obscurity is forever." - Napoleon Bonaparte
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