On Wed, Jun 10, 2009 at 12:51:58PM +0200, Joerg Sonnenberger wrote: > 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). Oh, on write... yeah, in that case, this. -- Dan.
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