From: Manfred Spraul <manfred@colorfullife.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Poor floppy performance in kernel 2.4.10
Date: Fri, 19 Oct 2001 18:58:49 +0200 [thread overview]
Message-ID: <3BD05BC9.DED0A405@colorfullife.com> (raw)
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
> And with
> the floppy case, there was no way to notice at run-time whether the
> unit was broken or not - the floppy drives have no ID's to blacklist
> etc.
The standard trick is to start with media-change not supported, and
enable it if you get the first change signal.
There are really old floppies that don't support media-change signals,
and they _never_ send it. If you see a media-change signal, then you
know that the floppy is not broken.
Probably a timer (2 seconds) and a delayed cache flush should fix the
problem.
If the device supports media-change and media-lock, then it could
increase the timeout value.
--
Manfred
next reply other threads:[~2001-10-19 16:58 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-19 16:58 Manfred Spraul [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-10-27 15:00 Poor floppy performance in kernel 2.4.10 Alain Knaff
2001-10-27 15:15 ` Alexander Viro
2001-10-27 17:12 ` Alain Knaff
2001-10-27 17:42 ` Alexander Viro
2001-10-27 18:00 ` Alain Knaff
2001-10-27 18:13 ` Alexander Viro
2001-11-06 7:19 ` Richard Gooch
2001-11-06 7:22 ` Alexander Viro
2001-10-27 18:26 ` Alexander Viro
2001-11-06 7:01 ` Richard Gooch
2001-11-06 7:03 ` Alexander Viro
2001-10-27 19:13 ` Alain Knaff
2001-10-27 19:19 ` Alexander Viro
2001-10-27 19:26 ` Alain Knaff
2001-10-28 20:40 ` Alain Knaff
2001-10-28 20:57 ` Peter T. Breuer
2001-10-29 5:38 ` Alain Knaff
2001-10-29 6:07 ` Alexander Viro
2001-10-29 6:34 ` Alain Knaff
2001-10-28 21:42 ` Alexander Viro
2001-10-21 11:36 Alain Knaff
2001-10-22 9:59 ` Andrea Arcangeli
2001-10-22 10:06 ` Alexander Viro
2001-10-22 14:07 ` Nick LeRoy
2001-10-22 18:28 ` bill davidsen
2001-10-17 7:36 Kamil Iskra
2001-10-17 20:45 ` Steve Kieu
2001-10-18 10:11 ` Kamil Iskra
2001-10-18 15:28 ` Andreas Dilger
2001-10-18 15:42 ` Kamil Iskra
2001-10-18 16:17 ` Ville Herva
2001-10-18 16:30 ` Nick LeRoy
2001-10-18 19:57 ` bill davidsen
2001-10-18 20:47 ` Nick LeRoy
2001-10-18 20:05 ` bill davidsen
2001-10-18 20:15 ` Alexander Viro
2001-10-18 16:18 ` Alexander Viro
2001-10-18 17:44 ` Andrea Arcangeli
2001-10-19 7:50 ` Giuliano Pochini
2001-10-19 13:46 ` Andrea Arcangeli
2001-10-19 15:57 ` Linus Torvalds
2001-10-20 4:20 ` Rob Landley
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