From: Rob Landley <rob@landley.net>
Organization: Boundaries Unlimited
To: "Julian Calaby" <julian.calaby@gmail.com>
Subject: Re: What still uses the block layer?
Date: Mon, 15 Oct 2007 05:08:36 -0500
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Cc: "Theodore Tso" <tytso@mit.edu>,
       "James Bottomley" <James.Bottomley@steeleye.com>,
       "Matthew Wilcox" <matthew@wil.cx>, linux-kernel@vger.kernel.org,
       linux-scsi@vger.kernel.org, "Jens Axboe" <axboe@suse.de>,
       "Suparna Bhattacharya" <suparna@in.ibm.com>,
       "Nick Piggin" <piggin@cyberone.com.au>
References: <200710112011.22000.rob@landley.net> <200710150304.00901.rob@landley.net> <646765f40710150206j75af4c4dwac4f4565451b64b1@mail.gmail.com>
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On Monday 15 October 2007 4:06:20 am Julian Calaby wrote:
> On 10/15/07, Rob Landley <rob@landley.net> wrote:
> > I note that the eth0 and eth1 names are dynamically assigned on a first
> > come first serve basis (like scsi).  This never causes me a problem
> > because the driver loading order is constant, and once you figure out
> > that eth0 is gigabit and eth1 is the 80211g it _stays_ that way across
> > reboots, reliably. Yeah, it's a heuristic.  Hands up everybody relying on
> > such a heuristic in the real world.
>
> Umm, not quite, from my experiences with pre-production wireless
> drivers, (another story, another time) fancy stuff is being done in
> udev to make sure that your gigabit card is always assigned to eth0.

I remember building a 2.4 kernel, statically linking in all the drivers, and 
getting the ethernet devices showing up in a reliable order for years.  Where 
does the need for fancy stuff come in?

Rob
-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.
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