From: Alan Cox <alan@redhat.com>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@redhat.com>,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,
torvalds@osdl.org
Subject: Re: PATCH: switch ide-proc to use the ide_key functionality
Date: Mon, 16 Aug 2004 20:13:36 -0400 [thread overview]
Message-ID: <20040817001336.GA25753@devserv.devel.redhat.com> (raw)
In-Reply-To: <200408170135.11465.bzolnier@elka.pw.edu.pl>
On Tue, Aug 17, 2004 at 01:35:11AM +0200, Bartlomiej Zolnierkiewicz wrote:
> Alan, 'ide_key' protection misses driver specfiic /proc/entries.
Ok need to fix that
> It is also still racy for some drivers because ide_register_hw() ->
> init_hwif_data() sets hwif->key to zero - you must set hwif->hold to 1.
ide_register_hw holds ide_setting_sem. I think that should be ok ?
> Can't we solve the problem in simpler way by covering affected /proc
> handlers with ide_setting_sem?
You'd need to refcount the ide objects because the 'data' value is long
lived. I did consider this but it seemed more complex. It also leaves end
users able to open an ide file and prevent unloading although I'm not
sure it is a big issue.
next prev parent reply other threads:[~2004-08-17 0:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-15 15:04 PATCH: switch ide-proc to use the ide_key functionality Alan Cox
2004-08-16 15:24 ` Bartlomiej Zolnierkiewicz
2004-08-16 15:30 ` Alan Cox
2004-08-16 23:22 ` Bartlomiej Zolnierkiewicz
2004-08-16 23:35 ` Bartlomiej Zolnierkiewicz
2004-08-17 0:13 ` Alan Cox [this message]
2004-08-17 0:31 ` Bartlomiej Zolnierkiewicz
2004-08-17 0:41 ` Alan Cox
2004-08-17 1:05 ` Alan Cox
2004-08-17 10:48 ` Bartlomiej Zolnierkiewicz
2004-08-17 12:06 ` Alan Cox
2004-08-17 22:15 ` Alan Cox
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