On Wed, Aug 09, 2017 at 11:21:38AM -0500, Steve Wise wrote: > > I don't know. I read the workqueue doc on WQ_MEM_RECLAIM, but I don't know > > how > > to tell if iw_cm needs this or not. Can you give me an example of a workqueue > > that _does_ need WQ_MEM_RECLAIM? I _think_ it means your workqueue is > > required > > to run something that would get triggered by the oom OS code, but I don't know > > if that would include rdma CMs or not... > > Many of the workqueues in infiniband/core use WQ_MEM_RECLAIM: cma, iwcm, mad, > multicast, sa_query, and ucma. > > Hey Sean, do you have any insight into whether the CMA modules really need > WQ_MEM_RECLAIM for their workqueues? > > Does anyone else know? Consider that the ib_core can be used to back storage. Ie consider a situation where iSER/NFS/SRP needs to reconnect to respond to kernel paging/reclaim. On the surface it seems reasonable to me that these are on a reclaim path? Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
