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From: Pavel Machek <pavel@ucw.cz>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] floppy: suspend/resume fix
Date: Wed, 15 Nov 2006 21:49:33 +0100	[thread overview]
Message-ID: <20061115204933.GD3875@elf.ucw.cz> (raw)
In-Reply-To: <20061115204915.1d0717db@localhost.localdomain>

Hi!

> > > > Suspending with mounted floppy is a user error.
> > > 
> > > Huh?  How so?
> > 
> > Floppy is removable, and you are expected to umount removable devices
> > before suspend.
> 
> That seems pretty crude. There are lots of cases where an apparently
> removable device is/should be preserved properly and left mounted (eg
> builtin CF).
> 
> We really want to be smarter than that - which means the drivers ought to
> be doing stuff in their suspend/resume paths to figure out if the media
> changed when really possible (eg IDE removable)
> 
> Floppy is probably not too fixable, but calling it a "user error" is
> insulting - user expectation is reasonable that suspend/resume should
> just work. The implementation is just rather trickier/nonsensical in this
> case.

Yep, it would be nice to do something about that; but I'm not sure how
this "was media changed" should be implemented, and if it should be
done in kernel or in userland.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

  reply	other threads:[~2006-11-15 20:49 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-12 20:47 [patch] floppy: suspend/resume fix Mikael Pettersson
2006-11-12 21:29 ` Russell King
2006-11-12 22:03   ` Ingo Molnar
2006-11-12 23:54     ` Russell King
2006-11-14 11:09       ` Pavel Machek
2006-11-14 16:34         ` Lee Revell
2006-11-15 20:24           ` Pavel Machek
2006-11-15 20:34             ` Lee Revell
2006-11-15 20:49             ` Alan
2006-11-15 20:49               ` Pavel Machek [this message]
2006-11-15 21:03                 ` Rafael J. Wysocki
2006-11-15 21:14                 ` Arjan van de Ven
2006-11-16 12:38                 ` Russell King
2006-11-15 18:46         ` Ingo Molnar
  -- strict thread matches above, loose matches on Subject: below --
2006-11-12 22:40 Mikael Pettersson
2006-11-12 23:58 ` Russell King
2006-11-15 18:53   ` Ingo Molnar
     [not found] <7grMO-2YO-55@gated-at.bofh.it>
     [not found] ` <7gs69-46A-37@gated-at.bofh.it>
     [not found]   ` <7gtvd-7xg-23@gated-at.bofh.it>
2006-11-12 21:44     ` Bodo Eggert
2006-11-14 11:05       ` Pavel Machek
2006-11-12 17:53 Mikael Pettersson
2006-11-12 18:09 ` Ingo Molnar
2006-11-12 19:30   ` Andrew Morton
2006-11-12 20:35     ` Arjan van de Ven
2006-11-12 19:40   ` Russell King
2006-11-11 20:48 [BUG] floppy: broken after resume due to 2.6.18-rc1 lockdep changes Mikael Pettersson
2006-11-12 15:47 ` [patch] floppy: suspend/resume fix Ingo Molnar

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