From: "Stephen C. Tweedie" <sct@redhat.com>
To: Richard Guenther <richard.guenther@student.uni-tuebingen.de>
Cc: "Stephen C. Tweedie" <sct@redhat.com>,
Jamie Lokier <lk@tantalophile.demon.co.uk>,
Linux Kernel List <linux-kernel@vger.rutgers.edu>,
glame-devel@lists.sourceforge.net, Linux-MM <linux-mm@kvack.org>
Subject: Re: mmap/munmap semantics
Date: Thu, 24 Feb 2000 13:51:25 +0000 (GMT) [thread overview]
Message-ID: <14517.14173.39047.651808@dukat.scot.redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.10.10002241320590.27227-100000@linux14.zdv.uni-tuebingen.de>
Hi,
On Thu, 24 Feb 2000 13:24:07 +0100 (MET), Richard Guenther
<richard.guenther@student.uni-tuebingen.de> said:
> Ah, this is cool - exactly what we need. I.e. an
> madvise(MADV_DONTNEED) and a subsequent munmap should not generate any
> disk io?
If you do the MADV_DONTNEED before the VM system has decided to flush
things out for its own reasons, then yes. At least, according to one
reading of the specs. There doesn't seem to be consensus yet on
precisely what this call is supposed to do --- BSD and Digital Unix man
pages are contradictory on this.
--Stephen
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next prev parent reply other threads:[~2000-02-24 13:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-02-22 17:46 Richard Guenther
2000-02-22 18:36 ` James Antill
2000-02-22 18:41 ` Benjamin C.R. LaHaise
2000-02-23 10:57 ` Richard Guenther
2000-02-23 15:58 ` Benjamin C.R. LaHaise
2000-02-24 10:06 ` Richard Guenther
2000-02-22 21:48 ` Richard Gooch
2000-02-23 3:49 ` Eric W. Biederman
2000-02-23 11:14 ` Richard Guenther
2000-02-23 15:44 ` Jamie Lokier
2000-02-23 18:48 ` Stephen C. Tweedie
2000-02-24 2:35 ` Jamie Lokier
2000-02-24 12:13 ` Stephen C. Tweedie
2000-02-24 12:24 ` Richard Guenther
2000-02-24 13:51 ` Stephen C. Tweedie [this message]
2000-02-24 15:01 ` kernel
2000-02-24 15:03 ` Richard Guenther
2000-02-24 15:15 ` Jamie Lokier
2000-02-24 13:06 ` lars brinkhoff
2000-02-24 14:42 ` Jamie Lokier
2000-02-24 13:41 ` Eric W. Biederman
2000-02-24 13:49 ` Stephen C. Tweedie
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