Jens Axboe wrote:
>>>
>> I would personally argue that sendfile() blocking on an O_NONBLOCK
>> desriptor, as opposed to returning EAGAIN, is a bug, and a fairly
>> serious such.
>
> I agree, but it's still a change in behaviour. Even if we consider the
> app buggy (it is), can we potentially break it?
>
It depends on which app it is, of course. However, I think we have to
smoke that out the hard way. I don't think we should retain a bug in
the kernel just because some unknown app might depend on that bug --
taking that to the extreme we could never fix bugs at all...
-hpa
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