On Tue, 23 Jun 2009, Gregory Haskins wrote: > I think the lack of a way to got from a file* to a ctx* (or back) might > be a problem. I am not an expert, but if I understood the gist of what > Al Viro (cc'd) was saying early on, an fd can change meaning out from > under you without warning. > > With the code the way it is now, I would need to call both > eventfd_fget() and eventfd_ctx_fdget() to fully acquire state (unless I > am missing something). I would think that is a race and I am not > guaranteed to get the same object. Can we also have a way to convert > one reference to the other? I am thinking > > struct eventfd_ctx *eventfd_ctx_fget(struct file *) > > (or similar) would be sufficient.
You're right. That function was available in the previous patch, but then I dropped it because I thought the eventfd code could be simplified. But yes, it's needed. - Davide -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
