Messages in this thread |  | | | Date | Wed, 26 Oct 2005 19:11:31 +0200 (CEST) | | From | Andreas Kleen <> | | Subject | Re: Notifier chains are unsafe |
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Am Mi 26.10.2005 02:01 schrieb Chandra Seetharaman <sekharan@us.ibm.com>:
> > Better would be likely to use RCU. > > RCU will be a problem if the registered notifiers need to block. Actually blocking should be ok, as long as the blocking notifier doesn't unregister itself. The current next pointer will be always reloaded after the blocking. Still on preemptive kernels there might be problems, but they could be likely solved by a few strategic preempt_disables in notifier_call_chain(). Dipankar, what do you think? -Andi
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