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Date:      31 May 1999 16:15:57 +0300
From:      Ville-Pertti Keinonen <will@iki.fi>
To:        Zhihui Zhang <zzhang@cs.binghamton.edu>
Cc:        hackers@freebsd.org
Subject:   Re: question about vnode and inode locking
Message-ID:  <86ogj1pegi.fsf@not.demophon.com>
In-Reply-To: zzhang@cs.binghamton.edu's message of "30 May 1999 21:51:55 %2B0300"
References:  <Pine.GSO.3.96.990530143132.15418A-100000@sol.cs.binghamton.edu>

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zzhang@cs.binghamton.edu (Zhihui Zhang) writes:

> It seems to me that we can lock at the vnode layer AND at the inode layer. 

No, the inode lock is, in most cases, the vnode layer lock.  It isn't
obvious because the code assumes that any filesystem using vop_stdlock
has a 'struct lock' as the first entry of the internal data pointed to
by v_data.

Very ugly.


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