is cache-only-prefixes an nnpfs limitation?

[Garrett Wollman]

<<On 10 Apr 2006 09:45:03 +0200, Tomas Olsson <tol at stacken.kth.se> said:

> Adam Megacz <megacz at cs.berkeley.edu> writes:
>> Ok.  Is it currently possible for the userspace to know when the
>> kernel has read the block, so it can evict it immediately?
>> 
> Not at the moment, but we should add such a pioctl. For the time being
> there's the "flush file" pioctl.

posix_fadvise(fd, POSIX_FADV_NOREUSE);

-GAWollman