On Wed, Jan 30, 2008 at 06:08:14PM -0800, Christoph Lameter wrote:
> hlist_for_each_entry_safe_rcu(mn, n, t,
^^^^
> &mm->mmu_notifier.head, hlist) {
> hlist_del_rcu(&mn->hlist);
^^^^
_rcu can go away from both, if hlist_del_rcu can be called w/o locks.
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