> -----Original Message----- > From: Hefty, Sean [mailto:sean.he...@intel.com] > Sent: Thursday, July 17, 2014 2:50 PM > To: Steve Wise; 'Shirley Ma'; 'Devesh Sharma'; 'Roland Dreier' > Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com > Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider module > > > > So the rdma cm is expected to increase the driver reference count > > (try_module_get) for > > > each new cm id, then deference count (module_put) when cm id is > > destroyed? > > > > > > > No, I think he's saying the rdma-cm posts a RDMA_CM_DEVICE_REMOVAL event > > to each > > application with rdmacm objects allocated, and each application is expected > > to destroy all > > the objects it has allocated before returning from the event handler. > > This is almost correct. The applications do not have to destroy all the > objects that it has > allocated before returning from their event handler. E.g. an app can queue a > work item > that does the destruction. The rdmacm will block in its ib_client remove > handler until all > relevant rdma_cm_id's have been destroyed. >
Thanks for the clarification. > > And I think the ib_verbs core calls each ib_client's remove handler when an > > rdma provider > > unregisters with the core. > > yes -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
