> > 	- building a heuristic which can handle multiple stream is hard. :-)
> 
> I agree it's not trivial, but that should make it all the more satisfying.  :-)

ok. :-)

then,
	- store a hint from posix_fadvise in struct file.
	- pass the hint to VOP_READ, instead of uvm_ractx.
	- uvm_ra_request can do whatever it want with the hint.

sounds good?

YAMAMOTO Takashi