IB/core: add a need_inval flag to struct ib_mr

This is the first step toward moving MR invalidation decisions
to the core.  It will be needed by the upcoming RW API.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 8549345c6169..76c9c3faac20 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1353,6 +1353,7 @@ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
                 mr->pd      = pd;
                 mr->uobject = NULL;
                 atomic_inc(&pd->usecnt);
+                mr->need_inval = false;
         }
 
         return mr;
@@ -1399,6 +1400,7 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
                 mr->pd      = pd;
                 mr->uobject = NULL;
                 atomic_inc(&pd->usecnt);
+                mr->need_inval = false;
         }
 
         return mr;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 400a8a0422a4..3f66647749ca 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1446,6 +1446,7 @@ struct ib_mr {
         u64                iova;
         u32                length;
         unsigned int       page_size;
+        bool               need_inval;
         union {
                 struct ib_uobject       *uobject;       /* user */
                 struct list_head        qp_entry;       /* FR */