>By default when you use aio you get the version in libc (-lrt IIRC)
>which has the issue I mentioned, probably because it's probably
>optimised for the lots-of-network-connections type program where
>multiple outstanding requests on a single fd are not meaningful. You
>can however link in some other library which gives you kernel support.
>However, I don't have a new enough kernel to have the kernel support so
>I havn't tested that.
>
>
Actually, after reading up on the current state of things, I'm not sure you
can even get POSIX aio on top of kernel aio in Linux. There are also a
few limitations in the 2.6 aio implementation that might prove troublesome:
for example it only works with O_DIRECT.
libaio gives userland access to the kernel aio api (which is different
from POSIX aio).