On Mon, 2018-11-19 at 10:45 -0500, Chuck Lever wrote: +AD4 FMR is not supported on most recent RDMA devices. It is also slower +AD4 and less secure than FRWR. As discussed during the RDMA BoF at LPC +AD4 2018, it is time to remove support for FMR in the NFS/RDMA client +AD4 stack. NFS/RDMA server-side uses either local memory registration or +AD4 FRWR. There is no change required there to deprecate FMR. +AD4 +AD4 There are a few Infiniband/RoCE devices in the kernel tree that do +AD4 not support MEM+AF8-MGT+AF8-EXTENSIONS, and therefore will no longer support +AD4 client-side NFS/RDMA. These are: +AD4 +AD4 - mthca +AD4 - qib +AD4 - usnic +AD4 - hns (RoCE) Can someone from Intel comment on how many of their customers rely on the qib driver? Can someone from Cisco comment on how many of their customers rely on the usnic driver? Can someone from Huawei comment on how many of their customers rely on the hns driver? I'm wondering whether I can remove FMR support from the SRP initiator driver. Thanks, Bart.
