Re: CVS commit: src/lib/libc/sys

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Tue, Jun 09, 2009 at 10:57:16PM +0000, YAMAMOTO Takashi wrote:
> do you have any idea what an implementation of POSIX_FADV_NOREUSE
> which is not a no-op would be like?

Effectively add the page is if has been aged already?

> IMO, the use-once stream is a too common workload to require
> an explicit hint.  the VM should just handle it nicely without hints.

If you copy a large directory tree for example, you want to ensure that
writing starts early and is done continious. This is something were the
hint helps (as opposed to writing a file for later use, even if it is
done sequentially).

Joerg