From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Hugang <hugang@soulinfo.com>
Cc: linux-kernel@vger.kernel.org, bcollins@debian.org
Subject: Re: [PATCH] fix rmmod sbp2 hang in 2.6.7
Date: Wed, 14 Jul 2004 11:20:38 +0100 [thread overview]
Message-ID: <20040714112038.A14881@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20040714172957.52de0f9b@localhost>; from hugang@soulinfo.com on Wed, Jul 14, 2004 at 05:29:57PM +0800
On Wed, Jul 14, 2004 at 05:29:57PM +0800, Hugang wrote:
> On Wed, 14 Jul 2004 10:24:17 +0100
> Russell King <rmk+lkml@arm.linux.org.uk> wrote:
> | This down+up prevents drivers from being unloaded until there are no
> | references to their struct device_driver. By removing this, you open
> | the very real possibility for an oops to occur.
> Yes, I agree with you. When sbp2 is using the module count is not zero,
> so I can rmmod it, So I think, for sbp2 that's safe, That's true on my
> laptop.
The module count does not cover all cases, especially the case which this
semaphore protects against.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/
2.6 Serial core
next prev parent reply other threads:[~2004-07-14 10:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-14 3:48 [PATCH] fix rmmod sbp2 hang in 2.6.7 Hugang
2004-07-14 8:13 ` Hugang
2004-07-14 9:11 ` Hugang
2004-07-14 9:24 ` Russell King
2004-07-14 9:29 ` Hugang
2004-07-14 10:20 ` Russell King [this message]
2004-07-14 11:33 ` Ben Collins
2004-07-17 18:43 ` Tim Wright
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