From owner-freebsd-current  Wed Nov 14 15:31:36 2001
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Date: Wed, 14 Nov 2001 15:31:28 -0800
Subject: Re: RE: lock order reversal for today's -CURRENT
From: "Glenn Gombert" <glenngombert@onebox.com>
To: current@FreeBSD.ORG
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  Is there a good , current description of how & why  the various mutexe's
& conditon variables are used for somewhere?? I see what they are doing
in the code, but would like to get the big picture of why they are used
in one place (and not another type)..

Thanks,
Glenn G.

 
>     I'm not against the concept of multiple pools, but I'm not really
>     for it either.  The various mutexes are already far too complex
>     for their own good... look at SX locks, for example.  The
>     struct sx is about 8 times as big as it needs to be to implement
>     reasonable functionality.  I would scrap the upgrade and 
>     downgrade API and I would scrap the condition variables
>     and go with a simple shared/exclusive counter.
> 
> 					-Matt
> 					Matthew Dillon 
> 					<dillon@backplane.com>
> 
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