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From: Anton Altaparmakov <aia21@cam.ac.uk>
To: viro@parcelfarce.linux.theplanet.co.uk
Cc: Andy Isaacson <adi@hexapodia.org>, Rob Landley <rob@landley.net>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: Is there a "make hole" (truncate in middle) syscall?
Date: Fri, 05 Dec 2003 14:27:16 +0000	[thread overview]
Message-ID: <1070634436.6622.2.camel@imp> (raw)
In-Reply-To: <20031205114400.GD10421@parcelfarce.linux.theplanet.co.uk>

On Fri, 2003-12-05 at 11:44, viro@parcelfarce.linux.theplanet.co.uk
wrote:
> On Fri, Dec 05, 2003 at 11:22:01AM +0000, Anton Altaparmakov wrote:
> > On Thu, 4 Dec 2003, Andy Isaacson wrote:
> > > On Thu, Dec 04, 2003 at 02:32:23PM -0600, Rob Landley wrote:
> > > I'm curious -- does NTFS implement sparse files?  Does the Win32 API
> > > provide any way to manipulate them?  Does the NT kernel have any sparse
> > > file handling?
> > 
> > Yes it does.  The new NTFS Linux driver has full support for sparse files
> > as does Windows of course.
> > 
> > Windows does provide a function which is just "make hole".  It takes
> > starting offset and length (or was it ending offset instead of length,
> > can't remember) and makes this sparse (obviously aligning to cluster
> > boundaries, etc).
> 
> Have fun getting it to play nice with mmap()...

I have no intention to provide such "make hole" functionality in the
Linux kernel NTFS driver so I don't need to...  (-;

Cheers,

	Anton
-- 
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ &
http://www-stu.christs.cam.ac.uk/~aia21/


  reply	other threads:[~2003-12-05 14:27 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-04 20:32 Is there a "make hole" (truncate in middle) syscall? Rob Landley
2003-12-04 20:55 ` Måns Rullgård
2003-12-04 21:10 ` Szakacsits Szabolcs
2003-12-05  0:02   ` Rob Landley
2003-12-04 22:33     ` Szakacsits Szabolcs
2003-12-05 11:22     ` Helge Hafting
2003-12-05 12:11   ` Måns Rullgård
2003-12-05 22:41     ` Mike Fedyk
2003-12-05 23:25       ` Måns Rullgård
2003-12-05 23:33       ` Szakacsits Szabolcs
2003-12-05 23:25     ` Szakacsits Szabolcs
2003-12-04 21:48 ` Mike Fedyk
2003-12-04 23:59   ` Rob Landley
2003-12-05 22:42     ` Olaf Titz
2003-12-04 22:53 ` Peter Chubb
2003-12-05  1:04   ` Philippe Troin
2003-12-05  2:39     ` Peter Chubb
2003-12-08  4:03     ` bill davidsen
2003-12-04 23:23 ` Andy Isaacson
2003-12-04 23:42   ` Szakacsits Szabolcs
2003-12-05  2:03     ` Mike Fedyk
2003-12-05  7:09       ` Ville Herva
2003-12-05 11:22   ` Anton Altaparmakov
2003-12-05 11:44     ` viro
2003-12-05 14:27       ` Anton Altaparmakov [this message]
2003-12-05 21:00   ` sparse file performance (was Re: Is there a "make hole" (truncate in middle) syscall?) Andy Isaacson
2003-12-05 21:12     ` Linus Torvalds
2003-12-08 20:43       ` Andy Isaacson
2003-12-11  5:13 ` Is there a "make hole" (truncate in middle) syscall? Hua Zhong
2003-12-11  6:19   ` Rob Landley
2003-12-11 18:58   ` Andy Isaacson
2003-12-11 19:15     ` Hua Zhong
2003-12-11 19:43       ` Andreas Dilger
2003-12-12 21:37         ` Daniel Phillips
2003-12-11 19:48       ` Jörn Engel
2003-12-11 19:55         ` Hua Zhong
2003-12-11 19:58         ` Andy Isaacson
2003-12-12 12:18           ` Jörn Engel
2003-12-12 15:40             ` Andy Isaacson
2003-12-12 16:03               ` Jörn Engel
2003-12-11 20:32         ` Rob Landley
2003-12-12 12:55           ` Jörn Engel
2003-12-12 13:28             ` Vladimir Saveliev
2003-12-12 13:43               ` Jörn Engel
2003-12-12 13:52                 ` Vladimir Saveliev
2003-12-12 14:04                   ` Jörn Engel
2003-12-12 13:53               ` Rob Landley
2003-12-12 14:01                 ` Vladimir Saveliev
2003-12-12 21:35                   ` Rob Landley
2003-12-15 10:00                     ` Vladimir Saveliev
2003-12-15 11:52                       ` Rob Landley
2003-12-15 13:26                         ` Jörn Engel
2003-12-12 13:39             ` Rob Landley
2003-12-12 13:56               ` Jörn Engel
2003-12-12 14:24                 ` Jörn Engel
2003-12-12 21:37                   ` Rob Landley
2003-12-15 12:47                     ` Jörn Engel
2003-12-16  5:43                       ` Rob Landley
2003-12-16 11:05                         ` Jörn Engel

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