From: "David S. Miller" <davem@redhat.com>
To: chas3@users.sourceforge.net
Cc: chas@cmf.nrl.navy.mil, netdev@oss.sgi.com
Subject: Re: [RFC] add rtnl semaphore to linux-atm
Date: Wed, 1 Oct 2003 05:42:26 -0700 [thread overview]
Message-ID: <20031001054226.126cea7b.davem@redhat.com> (raw)
In-Reply-To: <200310011134.h91BYPkT003172@ginger.cmf.nrl.navy.mil>
On Wed, 01 Oct 2003 07:34:25 -0400
chas williams <chas@cmf.nrl.navy.mil> wrote:
> i am thinking about doing the following to fix the race
> during ATM_ITF_ANY operation. rtnl is held across
> registration/unregistration. this means that you can get
> read-only access to the device list by holding rtnl
> or a read_lock on atm_dev_lock similar to the scheme
> used by netdevice (or so i think).
This looks like it would work.
Although, unless VCC connect can potentially sleep, it might
be better to keep exporting the rwlock and take it as a reader
instead of grabbing the rtnl semaphore.
next prev parent reply other threads:[~2003-10-01 12:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-01 11:34 [RFC] add rtnl semaphore to linux-atm chas williams
2003-10-01 12:42 ` David S. Miller [this message]
2003-10-01 13:07 ` chas williams
2003-10-01 13:14 ` David S. Miller
2003-10-03 2:26 ` Mitchell Blank Jr
2003-10-03 13:58 ` David S. Miller
2003-10-03 21:45 ` Mitchell Blank Jr
2003-10-04 5:16 ` David S. Miller
2003-10-04 5:55 ` Mitchell Blank Jr
2003-10-04 6:56 ` Mitchell Blank Jr
2003-10-04 6:59 ` Mitchell Blank Jr
2003-10-04 12:50 ` chas williams
2003-10-04 19:42 ` Mitchell Blank Jr
2003-10-05 12:52 ` chas williams
2003-10-06 9:03 ` Mitchell Blank Jr
2003-10-06 14:46 ` chas williams
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