Quoting r. Roland Dreier <[EMAIL PROTECTED]>: > Subject: Re: Fwd: issues in ipoib > > Michael> No, I think there's no problem - user callback has > Michael> finished running and that's all we care about. > > I don't think so -- because then the unregister call can return and > the client module free the client struct before the wake_up() runs, > which leads to use-after-free. > > Michael> But I'd like to point out that using rwsem gets all these > Michael> corners right automatically. Reconsider that approach? > > Again, I don't think so -- rwsem just hides the race from you. There > is a race with semaphores (access semaphore after waking up waiter) > which is the original reason for creating struct completion.
Hmm, you are right. So I need to replace the wait queue with completion. Thanks. -- MST _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
