From: Paulo Marques <pmarques@grupopie.com>
To: Libor Vanek <libor@conet.cz>
Cc: "Richard B. Johnson" <root@chaos.analogic.com>,
linux-kernel@vger.kernel.org
Subject: Re: Read from file fails
Date: Tue, 04 May 2004 19:45:49 +0100 [thread overview]
Message-ID: <4097E4DD.6090904@grupopie.com> (raw)
In-Reply-To: 20040504011957.GA20676@Loki
Libor Vanek wrote:
> Using kernel module:
> - user space process wants to change some file which is in "snapshoted" dir
> - my module catches this request, holds it, creates copy of original file and allows original request to proceed
Did you take a look at LVM snapshots?
http://tldp.org/HOWTO/LVM-HOWTO/snapshotintro.html
Maybe your problem is already solved...
Anyway, you really shouldn't worry about the time it takes to make a context
switch when you want to copy a file on modify ;)
--
Paulo Marques - www.grupopie.com
"In a world without walls and fences who needs windows and gates?"
next prev parent reply other threads:[~2004-05-04 18:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-03 0:00 Read from file fails Libor Vanek
2004-05-03 13:11 ` Richard B. Johnson
2004-05-03 15:06 ` Libor Vanek
2004-05-04 0:47 ` Richard B. Johnson
2004-05-04 1:19 ` Libor Vanek
2004-05-04 13:49 ` Richard B. Johnson
2004-05-05 10:34 ` Libor Vanek
2004-05-04 14:31 ` Bart Samwel
2004-05-05 9:54 ` Libor Vanek
2004-05-05 10:04 ` Bart Samwel
2004-05-05 10:19 ` Libor Vanek
2004-05-05 10:45 ` Bart Samwel
2004-05-05 11:22 ` Libor Vanek
2004-05-05 11:50 ` Bart Samwel
2004-05-05 10:54 ` Denis Vlasenko
2004-05-05 11:58 ` Michael Clark
2004-05-04 18:45 ` Paulo Marques [this message]
2004-05-05 9:47 ` Libor Vanek
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