From owner-cvs-all  Tue Aug 13  5:50:19 2002
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Date: Tue, 13 Aug 2002 08:37:15 -0400 (EDT)
From: Robert Watson <rwatson@FreeBSD.org>
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To: Alfred Perlstein <alfred@FreeBSD.org>
Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern sysv_msg.c
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On Tue, 13 Aug 2002, Alfred Perlstein wrote:

> * Alfred Perlstein <alfred@FreeBSD.org> [020813 01:00] wrote:
> > alfred      2002/08/13 01:00:36 PDT
> > 
> >   Modified files:
> >     sys/kern             sysv_msg.c 
> >   Log:
> >   Make SYSVMSG mpsafe.  Right now there is a global lock over the
> >   entire subsystem, we could move to per-message queue locks, however
> >   the messages themselves seem to come from a global pool and to avoid
> >   over-locking this code (locking individual queues, then the global
> >   pool) I've opted to just do it this way.
> >   
> >   Requested by: rwatson
> >   Tested by: NetBSD's regression suite.
> 
> I'll probably have SYSVSEM done tomorrow, it's quite a bit more
> complicated since I didn't use a global lock so I'm going to test it a
> lot harder to make sure it's correct. 

Great, thanks!

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories


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