[patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users

[Mathieu Desnoyers]

Here is a patchset, done on 2.6.30.9, which permits to detect and fix racy
call_rcu() users.

Fix for vunmap, which happens to be one of them, is included.

Note that some false-positives might come up when call_rcu() is called on
uninitialized struct rcu_head. The solution is, surprisingly enough, to
initialize them.

Thanks,

Mathieu

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Mathieu Desnoyers
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