linux-kernel - Re: [PATCH] NFS: Fix RCU warnings in nfs_inode_return_delegation

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Message-ID: <25276.1269901350@redhat.com>
Date:	Mon, 29 Mar 2010 23:22:30 +0100
From:	David Howells <dhowells@...hat.com>
To:	paulmck@...ux.vnet.ibm.com, Eric Dumazet <eric.dumazet@...il.com>
Cc:	dhowells@...hat.com, Trond.Myklebust@...app.com,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] NFS: Fix RCU warnings in nfs_inode_return_delegation_noreclaim() [ver #2]

Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> And rcu_dereference_raw() is the same as the old rcu_dereference().

Exactly.  That's the other half of the issue - that interpolates a redundant
memory barrier.

David
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