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Date:      Wed, 7 Feb 2001 16:32:51 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/kern uipc_mbuf.c
Message-ID:  <20010207163251.Z26076@fw.wintelcom.net>
In-Reply-To: <200102080027.f180Rg547359@freefall.freebsd.org>; from jhb@FreeBSD.org on Wed, Feb 07, 2001 at 04:27:41PM -0800
References:  <200102080027.f180Rg547359@freefall.freebsd.org>

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* John Baldwin <jhb@FreeBSD.org> [010207 16:28] wrote:
> jhb         2001/02/07 16:27:41 PST
> 
>   Modified files:
>     sys/kern             uipc_mbuf.c 
>   Log:
>   Don't bother with acquiring/releasing Giant around kmem_malloc() and
>   kmem_free() for now.  Kmem_malloc() and kmem_free() now have appropriate
>   assertions in place, and these checks aren't feasible until more of the
>   networking code is locked down.  Also, the extra assertions here should
>   already be caught by the WITNESS code as lock order violations should
>   mutex operations on Giant be reintroduced here later.

I think this is wrong.  If the drivers unwound Giant on entry before
aquiring the driver lock they would be mpsafe.  Unless the vm system
is made safe making the network stack safe will have nothing to do
with this.

-- 
-Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org]
"I have the heart of a child; I keep it in a jar on my desk."


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