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From: Rusty Russell <rusty@linuxcare.com.au>
To: Philipp Rumpf <prumpf@mandrakesoft.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.1-ac15
Date: Wed, 21 Feb 2001 14:02:04 +1100	[thread overview]
Message-ID: <E14VPXZ-0007HS-00@halfway> (raw)
In-Reply-To: Your message of "Mon, 19 Feb 2001 05:54:11 CDT." <Pine.LNX.3.96.1010219054120.16489F-100000@mandrakesoft.mandrakesoft.com>

In message <Pine.LNX.3.96.1010219054120.16489F-100000@mandrakesoft.mandrakesoft
.com> you write:
> > We unlink the module
> > We free the memory
> > 
> > At the same time another cpu may be walking the exception table that we fre
e.
> 
> True.
> 
> Rusty had a patch that locked the module list properly IIRC.

This is a while back, but I thought the solution Philipp and I came up
with was to simply used a rw semaphore for this, which was taken (read
only) on page fault if we have to scan the exception table.

Rusty.
--
Premature optmztion is rt of all evl. --DK

  parent reply	other threads:[~2001-02-21  3:02 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-02-15 23:15 Linux 2.4.1-ac15 Alan Cox
2001-02-19  9:47 ` Philipp Rumpf
2001-02-19 11:35   ` Alan Cox
2001-02-19 11:54     ` Philipp Rumpf
2001-02-19 16:03       ` Alan Cox
2001-02-19 16:21         ` Philipp Rumpf
2001-02-19 16:27           ` Alan Cox
2001-02-19 16:34             ` Philipp Rumpf
2001-02-19 16:41               ` Alan Cox
2001-02-19 16:48                 ` Philipp Rumpf
2001-02-19 17:03                   ` Alan Cox
2001-02-21  3:02       ` Rusty Russell [this message]
2001-02-21 12:01         ` Alan Cox
2001-02-22  2:05           ` Rusty Russell
2001-02-22 10:22             ` Alan Cox
2001-02-23  0:01               ` Philipp Rumpf
2001-02-22  2:27           ` Linus Torvalds
2001-02-22 10:29             ` Alan Cox
2001-02-23 20:40               ` Andrea Arcangeli
2001-02-23 21:09                 ` Linus Torvalds
2001-02-24  4:04                   ` Andrea Arcangeli
2001-02-24  4:54                     ` Andrea Arcangeli
2001-02-19 11:54     ` Keith Owens
2001-02-19 12:15       ` Philipp Rumpf
2001-02-19 13:15         ` Keith Owens
2001-02-19 13:25           ` Christoph Hellwig
2001-02-19 21:32             ` Keith Owens
2001-02-19 13:36           ` Philipp Rumpf
2001-02-19 15:23           ` Manfred Spraul
2001-02-19 16:04       ` Alan Cox
2001-02-19 21:52         ` Keith Owens
2001-02-20 12:29           ` Philipp Rumpf

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