> > i'd like to request reviews and comments at this point,
> > so that i don't have to sweep code many times. :)
> 
> Could you please elaborate a bit on what these changes are supposed to
> do? :)

ktrace-lwp branch changed uio_procp to uio_lwp.
IMO, it was a mistake because what uio needs to describe is
an address space, not a thread.

rather than just reverting the change, i'd like to go further
as a one step.  a vmspace (or a vm_map) is more appropriate than a process.

i guess that the change makes implementations of aio-like things
more straightforward.

YAMAMOTO Takashi