- Set a lower priority for AIO-worker thread, because current could cause
interactivity problems (eg. with qemu - thanks <xtraeme> for testing).
Mark it as XXX for now - after priority model change, this should
be reconsidered anyway.
- Do not copyout() with lock held in sys_aio_cancel().
- Fix a leak of the lock in aio_process().
- Check for any error of cv_wait_sig().
- Cache p->p_aio in aio_exit().
Thanks <ad> for catching the issues!
- Add POSIX defined system variables and constants of AIO_LISTIO_MAX and
AIO_MAX values. Both with _POSIX_ASYNCHRONOUS_IO, provide them in
sysconf(3) and getconf(1) interfaces.
- Clean up sysconf(3) for handling sysctl nodes dynamically.
Seems to be quite stable. Some work still left to do.
Please note, that syscalls are not yet MP-safe, because
of the file and vnode subsystems.
Reviewed by: <tech-kern>, <ad>
ad