IB/srp: Use multiple registrations for large memory regions

Instead of using the global rkey for large memory regions, use
multiple registrations. See also the while (dma_len) loop further
down in srp_map_sg_entry().

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 6ed976d..03ae72e 100644 (file)
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1393,16 +1393,6 @@ static int srp_map_sg_entry(struct srp_map_state *state,
                return 0;
        }
 
-       if (dma_len > dev->mr_max_size) {
-               ret = srp_finish_mapping(state, ch);
-               if (ret)
-                       return ret;
-
-               srp_map_desc(state, dma_addr, dma_len, target->rkey);
-               srp_map_update_start(state, NULL, 0, 0);
-               return 0;
-       }
-
        /*
         * If this is the first sg that will be mapped via FMR or via FR, save
         * our position. We need to know the first unmapped entry, its index,