From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ravikiran G Thirumalai <kiran@scalex86.org>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,
"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
Alok Kataria <alokk@calsoftinc.com>
Subject: Re: [patch 0/4] ide: Break ide_lock to per-hwgroup lock
Date: Wed, 07 Sep 2005 20:06:14 +0100 [thread overview]
Message-ID: <1126119974.8928.33.camel@localhost.localdomain> (raw)
In-Reply-To: <20050907181654.GB3769@localhost.localdomain>
On Mer, 2005-09-07 at 11:16 -0700, Ravikiran G Thirumalai wrote:
> I tested it on a 2way box with a piix controller. It got through Bonnie++.
> I have access to piix controllers only, so that was the only controller
> I changed. I did not read the errata though... :(
Errata matter a lot unfortunately - older IDE controllers commonly have
bugs where changing the set up of one interface affects the other even
if a transfer is occuring.
> Do you think the approach is unsafe, even if the piix tune routine is
> serialized with a per-driver lock? Bartlomiej?
If the documents/errata for the chips are checked then I can see it
making sense. I do worry that it may introduce other races because the
IDE locking is such a mess but that would be true of any change and
eventually has to be addressed.
I think it makes sense, with corrections.
prev parent reply other threads:[~2005-09-07 19:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-06 23:33 [patch 0/4] ide: Break ide_lock to per-hwgroup lock Ravikiran G Thirumalai
2005-09-06 23:37 ` [patch 1/4] ide: Break ide_lock -- Move hwif tuning code after hwif_init Ravikiran G Thirumalai
2005-09-06 23:40 ` [patch 2/4] ide: Break ide_lock -- replace ide_lock with hwgroup->lock in core ide Ravikiran G Thirumalai
2005-09-07 6:33 ` Ravikiran G Thirumalai
2005-09-06 23:42 ` [patch 3/4] ide: Break ide_lock -- change controller drivers Ravikiran G Thirumalai
2005-09-06 23:44 ` [patch 4/4] ide: Break ide_lock -- remove ide_lock from piix driver Ravikiran G Thirumalai
2005-09-07 17:06 ` Alan Cox
2005-09-07 17:50 ` Ravikiran G Thirumalai
2005-09-07 18:24 ` Alan Cox
2005-09-07 9:19 ` [patch 0/4] ide: Break ide_lock to per-hwgroup lock Jens Axboe
2005-09-07 19:27 ` Ravikiran G Thirumalai
2005-09-07 19:34 ` Jens Axboe
2005-09-27 13:36 ` Bartlomiej Zolnierkiewicz
2005-09-27 15:20 ` Ravikiran G Thirumalai
2005-09-27 15:26 ` Jens Axboe
2005-09-27 15:42 ` Ravikiran G Thirumalai
2005-09-27 15:58 ` Jens Axboe
2005-09-07 17:09 ` Alan Cox
2005-09-07 18:16 ` Ravikiran G Thirumalai
2005-09-07 19:06 ` Alan Cox [this message]
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