RDMA/odp: Make it clearer when a umem is an implicit ODP umem

[linux-2.6-microblaze.git] / include / rdma / ib_umem_odp.h

diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h
index 030d5cb..14b38b4 100644 (file)
--- a/include/rdma/ib_umem_odp.h
+++ b/include/rdma/ib_umem_odp.h
@@ -69,6 +69,14 @@ struct ib_umem_odp {
        /* Tree tracking */
        struct interval_tree_node interval_tree;
 
+       /*
+        * An implicit odp umem cannot be DMA mapped, has 0 length, and serves
+        * only as an anchor for the driver to hold onto the per_mm. FIXME:
+        * This should be removed and drivers should work with the per_mm
+        * directly.
+        */
+       bool is_implicit_odp;
+
        struct completion       notifier_completion;
        int                     dying;
        unsigned int            page_shift;