Re: CVS commit: src/sys/kern

[David Young <dyoung%pobox.com@localhost>]

On Fri, Jan 08, 2010 at 12:07:08PM +0000, Mindaugas Rasiukevicius wrote:
> Module Name:  src
> Committed By: rmind
> Date:         Fri Jan  8 12:07:08 UTC 2010
> 
> Modified Files:
>       src/sys/kern: subr_autoconf.c
> 
> Log Message:
> Simplify device G/C: use global list and config_alldevs_unlock_gc().

I see what you're trying to do here, and I appreciate the thought behind
it, and savings in lines of code, but this is not the right way.

Previously, the code distinguished garbage collection, locking
acquisition, and resource-reclamation from each other by using
more, and more meaningful, subroutine names.  Also, in the common
case, it collected and reclaimed garbage immediately at the end of
config_detach(9) instead of at some arbitrary time in the future (for
example, in the next call to device_lookup()).

Your change obfuscates the code and needlessly postpones a lot of
garbage collection.  Please back it out.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933