From: Andrea Arcangeli <andrea@suse.de>
To: Giuliano Pochini <pochini@shiny.it>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Poor floppy performance in kernel 2.4.10
Date: Fri, 19 Oct 2001 15:46:54 +0200 [thread overview]
Message-ID: <20011019154654.C8408@athlon.random> (raw)
In-Reply-To: <20011018194415.S12055@athlon.random> <XFMail.20011019095006.pochini@shiny.it>
In-Reply-To: <XFMail.20011019095006.pochini@shiny.it>; from pochini@shiny.it on Fri, Oct 19, 2001 at 09:50:06AM +0200
On Fri, Oct 19, 2001 at 09:50:06AM +0200, Giuliano Pochini wrote:
>
> > Indeed, only 2.2 trusted the check media change information and left the
> > cache valid on top of the floppy across close/open of the blkdev.
>
> Which is not a bad thing IMHO, but it can cause problems with
> some broken SCSI implementation where the drive doesn't send
> UNIT_ATTENTION after a media change (like my MO drive when I
> misconfigured the jumpers, damn :-((( ).
Yes, I was aware of that. We'd need a kind of "media change enabler"
bitflag in each lowlevel driver, to implement a blacklist (or whitelist
if you feel safer) that will tell us if to trust the media change info
or not.
Ciao,
Andrea
next prev parent reply other threads:[~2001-10-19 13:46 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-17 7:36 Poor floppy performance in kernel 2.4.10 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 [this message]
2001-10-19 15:57 ` Linus Torvalds
2001-10-20 4:20 ` Rob Landley
-- strict thread matches above, loose matches on Subject: below --
2001-10-19 16:58 Manfred Spraul
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
2001-10-27 15:00 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
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