From: Keith Owens <kaos@ocs.com.au>
To: linux-hotplug@vger.kernel.org
Subject: Re: (remove) event not supported.
Date: Sat, 31 Mar 2001 16:18:31 +0000 [thread overview]
Message-ID: <marc-linux-hotplug-98605567828962@msgid-missing> (raw)
In-Reply-To: <marc-linux-hotplug-98597321622555@msgid-missing>
On Sat, 31 Mar 2001 08:05:18 -0800,
David Brownell <david-b@pacbell.net> wrote:
>It's not a reference count, since it doesn't address the case where
>another module references it
It is a dynamic reference count. The reference from another module is
a static reference count. Historical.
>Since the counter can be (as
>you highlighted!) updated at any time, there's nothing to make it
>be a "reference" count. The networking framework is pretty explicit
>that it must be used as an "open" count
If networking framework says that then it is wrong.
>(SET_MODULE_OWNER arranges this).
SET_MODULE_OWNER only exports the address of the module structure so
external code can adjust the use count. Normally that is via the open
routine, but file systems just do one MOD_INC_USE_COUNT in fs/super.c
so it is a mount count, not an open count. Some netfilter modules want
to count the number of packets controlled by that module, again not an
open count.
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next prev parent reply other threads:[~2001-03-31 16:18 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-30 17:21 (remove) event not supported David Brownell
2001-03-31 1:00 ` Brad Hards
2001-03-31 2:03 ` Keith Owens
2001-03-31 2:12 ` Brad Hards
2001-03-31 3:48 ` David Hinds
2001-03-31 8:55 ` Brad Hards
2001-03-31 14:56 ` David Brownell
2001-03-31 15:02 ` David Brownell
2001-03-31 15:49 ` Keith Owens
2001-03-31 16:05 ` David Brownell
2001-03-31 16:18 ` Keith Owens [this message]
2001-03-31 16:52 ` David Brownell
2001-04-01 3:02 ` David Hinds
2001-04-01 3:03 ` David Hinds
2001-04-01 5:26 ` Douglas Gilbert
2001-04-02 2:56 ` Trond Eivind Glomsrød
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