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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>,
	Andrew Morton <akpm@linux-foundation.org>,
	akuster@mvista.com, linux-kernel@vger.kernel.org,
	Pavel Machek <pavel@ucw.cz>
Subject: Re: [patch 1/1] PM: Adds remount fs ro at suspend
Date: Tue, 6 Feb 2007 19:07:39 +0100	[thread overview]
Message-ID: <200702061907.40920.rjw@sisk.pl> (raw)
In-Reply-To: <20070206143231.GD18392@khazad-dum.debian.net>

On Tuesday, 6 February 2007 15:32, Henrique de Moraes Holschuh wrote:
> On Tue, 06 Feb 2007, Nigel Cunningham wrote:
> > Why do you think remounting filesystems is necessary? Are you getting
> > problems with some particular filesystem?
> 
> No.  But anything in a removable device neets to be either remounted
> read-only or unmounted if that is at all possible, because the user could
> unplug it.  It is of course, sync'd anyway, so if the remount/umount fails,
> no corruption should happen...  but the fs will be dirty, etc.
> 
> It can get very ugly when you factor in docks and removable bays. It's not
> just USB/firewire mass-storage devices and memory cards.  And there is the
> patological cases where the user suspends with the device in one port, and
> resumes with the device in another port.
> 
> I feel userspace *can* do all that needs to be done, but we are (currently)
> very bad at it.

Agreed, but still I think that we should try to solve these problems in user
space and only _after_ it turns out to be impossible or too hard to do we can
start to implement such things on the kernel side.

Greetings,
Rafael

  reply	other threads:[~2007-02-06 18:08 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-02 23:50 akuster
2007-02-03  0:16 ` Andrew Morton
2007-02-03  0:35   ` Henrique de Moraes Holschuh
2007-02-05 21:28     ` Nigel Cunningham
2007-02-05 21:35       ` Christoph Hellwig
2007-02-06 14:32       ` Henrique de Moraes Holschuh
2007-02-06 18:07         ` Rafael J. Wysocki [this message]
2007-02-06 21:38         ` Nigel Cunningham
2007-02-07 11:25           ` Henrique de Moraes Holschuh
2007-02-07 11:43             ` Nigel Cunningham
2007-02-07 12:05               ` Henrique de Moraes Holschuh
2007-02-07 14:10                 ` Rafael J. Wysocki
2007-02-09 22:24             ` Pavel Machek
2007-02-13 12:12         ` Pavel Machek
2007-02-03  0:57   ` akuster
2007-02-03 10:08 ` Christoph Hellwig
2007-02-04  1:34   ` akuster
2007-02-05 16:56     ` Christoph Hellwig
2007-02-14 11:07     ` Pavel Machek
2007-02-03 16:19 ` Pavel Machek

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