On Tue, Oct 09, 2012 at 05:36:26PM -0700, Zach Brown wrote:

quoted

The only situation you have to worry about is when the ringbuffer fills
up and stuff goes on the list, and then completions completely stop -
this should be a rare enough situation that maybe we could just hack
around it with a timer that gets flipped on when the list isn't empty.

Right.  And this is when we hopefully realize that we're adding overhead
and complexity (how long's the timer?  always fire it?  MAKE IT STOP)
and are actually making the system worse, not better.

Can still prototype it, and if it's that ugly... I throw away code all
the time :P

quoted

Also, for this to be an issue at all, _all_ the reaping would have to be
done from userspace - since existing libaio doesn't do that, there may
not be any code out there which triggers it.

And there may be.  We default to not breaking interfaces.  Seriously.

All the more reason to think about it now so we don't screw up the next
interfaces :)