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Date:      Tue, 30 May 2006 18:56:10 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        "Christian S.J. Peron" <csjp@freebsd.org>
Cc:        current@freebsd.org
Subject:   Re: [PATCH] Fixup locking for kernel-linker, needs ndis testing(!)
Message-ID:  <200605301856.10637.jhb@freebsd.org>
In-Reply-To: <44786C48.7030109@FreeBSD.org>
References:  <200605241749.02885.jhb@freebsd.org> <44786C48.7030109@FreeBSD.org>

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On Saturday 27 May 2006 11:12, Christian S.J. Peron wrote:
> 
> Currently, we are using Giant to serialize access into the sysctl tree. 
> This means that if the kernel linker is not picking up Giant, there 
> could be a race between when the kernel modules load/unload sysctls, and 
> somebody reading the sysctl tree.
> 
> I am not sure what the best thing to do here is yet. I've looked at the 
> locking for sysctl tree, and locking these entry points can be sticky 
> due to the recursive nature of the code.

I thought we had a big sx lock to protect the actual sysctl tree itself.

-- 
John Baldwin



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