From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: David Greaves <david@dgreaves.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: POSIX_FADV_NOREUSE and O_STREAMING behavior in 2.6.7
Date: Thu, 26 Aug 2004 15:11:00 -0400 [thread overview]
Message-ID: <1093547459.6106.57.camel@lade.trondhjem.org> (raw)
In-Reply-To: <412E2E0D.8040401@dgreaves.com>
På to , 26/08/2004 klokka 14:38, skreiv David Greaves:
> David Rolenc wrote:
>
> > I am trying to get O_STREAMING (Robert Love patch for 2.4) behavior in
> > 2.6 and just a glance at fadvise.c suggests that POSIX_FADV_NOREUSE is
> > not implemented any differently than POSIX_FADV_WILLNEED. Am I missing
> > something? I want to read data from disk with readahead and drop the
> > data from the page cache as soon as I am done with it. Do I have to
> > call fadvise with POSIX_FADV_DONTNEED after every read?
>
> And will this work over nfs?
What do you mean?
The client will of course respect fadvise() if the generic VM code
supports it, but there is no NFS protocol support for this, so the
client is not able to communicate your fadvise call on to the server.
Cheers,
Trond
next prev parent reply other threads:[~2004-08-26 19:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-26 17:39 David Rolenc
2004-08-26 18:17 ` Robert Love
2004-08-26 19:23 ` David Rolenc
2004-08-26 18:38 ` David Greaves
2004-08-26 19:11 ` Trond Myklebust [this message]
2004-08-27 8:25 ` David Greaves
2004-08-27 17:21 ` Trond Myklebust
2004-08-27 17:37 ` Trond Myklebust
2004-08-26 19:11 ` David Rolenc
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