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Date: Sat, 15 Feb 2003 01:51:52 +0100 (CET)
From: Roman Zippel <zippel@linux-m68k.org>
X-X-Sender: roman@serv
To: Werner Almesberger <wa@almesberger.net>
cc: Rusty Russell <rusty@rustcorp.com.au>, <kuznet@ms2.inr.ac.ru>,
       <davem@redhat.com>, <kronos@kronoz.cjb.net>,
       <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] Migrating net/sched to new module interface
In-Reply-To: <20030214211226.I2092@almesberger.net>
Message-ID: <Pine.LNX.4.44.0302150148010.1336-100000@serv>
References: <20030214120628.208112C464@lists.samba.org>
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Hi,

On Fri, 14 Feb 2003, Werner Almesberger wrote:

> I though we were talking about
> 
> 	static data_used_by_callbacks;
> 	...
> 	register_foo(&stuff_with_callbacks);
> 	...
> 	unregister_foo(&stuff_with_callbacks);
> 	make_unusable(&data_used_by_callbacks)
> 	...
> 	/* oops, we just got a callback */
> 
> ("data_used_by_callbacks" could be a pointer to kmalloc'ed
> memory, etc.)
> 
> This kind of problem seems to be understood well enough.

Yes, and now compare how the solutions differ when the data is static and 
when it's allocated.

bye, Roman

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