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    SubjectRe: [PATCH] NFS: Fix RCU warnings in nfs_inode_return_delegation_noreclaim() [ver #2]
    On Mon, Mar 29, 2010 at 11:22:30PM +0100, David Howells wrote:
    > Paul E. McKenney <paulmck@linux.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.

    Only on Alpha. Otherwise only a volatile access.

    Thanx, Paul


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