Date: Fri, 6 Jun 2003 12:26:16 -0300
From: Werner Almesberger <wa@almesberger.net>
To: "David S. Miller" <davem@redhat.com>
Cc: chas@cmf.nrl.navy.mil, linux-kernel@vger.kernel.org
Subject: Re: [PATCH][ATM] use rtnl_{lock,unlock} during device operations (take 2)
Message-ID: <20030606122616.B3232@almesberger.net>
References: <20030606105753.A3275@almesberger.net> <20030606.070747.48395512.davem@redhat.com> <20030606121339.A3232@almesberger.net> <20030606.081618.108808702.davem@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20030606.081618.108808702.davem@redhat.com>; from davem@redhat.com on Fri, Jun 06, 2003 at 08:16:18AM -0700
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1117
Lines: 29

David S. Miller wrote:
> But regardless I should be able to yank an ATM device out of the
> kernel (unregistering it) even if there are a thousand VCC's attached
> to it.

Why ? A VCC is more like a network interface than a TCP
connection.

Worse yet, if you remove the device, it's unlikely that you
can use a new one with the same physical interface before
all the old VCCs are gone. (I.e. you almost always have
things on well-known VCCs, which are associated with physical
devices.)

Removing an ATM device while there are open VCCs isn't a lot
more useful than removing a telephone while there is still a
call in progress :-)

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina         wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/