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From: Steven Whitehouse <steve@gw.chygwyn.com>
To: dwmw2@infradead.org (David Woodhouse)
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: File perforation.
Date: Wed, 8 Jan 2003 23:17:47 +0000 (GMT)	[thread overview]
Message-ID: <200301082317.XAA16132@gw.chygwyn.com> (raw)
In-Reply-To: <22288.1042065284@passion.cambridge.redhat.com> from "David Woodhouse" at Jan 08, 2003 10:34:44 PM

Hi,

I would have thought it was the kind of thing that HSM people might be
interested in, perhaps they have some ideas for interfaces ? 
Also I thought of an interface like madvise() but for
files: fadvise() and then discovered that it already exists :-)

http://www.opengroup.org/onlinepubs/007904975/functions/posix_fadvise.html

So presumably a suitable advice value FADV_CLEAR (for example) could be 
used as an addition to the POSIX values ? unless there is a reason not to
overload it ? I guess preallocation could be done through the same
mechanism too if it was required.

Also I found a thread about fadvise here:

http://www.cs.helsinki.fi/linux/linux-kernel/2002-11/0031.html

Steve.


  parent reply	other threads:[~2003-01-08 23:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-08 22:06 File perforation David Woodhouse
2003-01-08 22:28 ` Eli Carter
2003-01-08 22:34   ` David Woodhouse
2003-01-08 22:56     ` Eli Carter
2003-01-08 23:14       ` David Woodhouse
2003-01-09  1:22         ` Andrew Morton
2003-01-09  3:23           ` Andreas Dilger
2003-01-08 23:17     ` Steven Whitehouse [this message]
2003-01-08 23:16       ` David Woodhouse
2003-01-08 23:36         ` Steven Whitehouse
2003-01-08 23:25           ` David Woodhouse
2003-01-10  1:39         ` Bryan Henderson
2003-01-08 22:45 ` Dave Kleikamp
2003-01-08 22:55 ` Matthew Wilcox
2003-01-08 23:02   ` David Woodhouse
2003-01-11  9:47   ` Christoph Hellwig
2003-01-10  1:34 ` Bryan Henderson
  -- strict thread matches above, loose matches on Subject: below --
2003-01-10 22:24 Steven French
2003-01-11  1:46 ` Bryan Henderson
2003-01-13  3:52 Steven French

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