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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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