[PATCH rdma-next 03/15] RDMA/core: Allow optional access flags in dmabuf reg ioctl

The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.

Add the optional access flag to the allow-list of dmabuf registration
ioctl. Uverbs users can now request any optional access flag on dmabuf
registrations and drivers will apply the flag's effect on a best-effort
basis when supported.

Fixes: bfe0cc6eb249 ("RDMA/uverbs: Add uverbs command for dma-buf based MR registration")
Cc: stable@vger.kernel.org
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <redacted>
---
 drivers/infiniband/core/uverbs_std_types_mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c
index 0c72f801e0d3..b6d6cbe448a2 100644
--- a/drivers/infiniband/core/uverbs_std_types_mr.c
+++ b/drivers/infiniband/core/uverbs_std_types_mr.c

@@ -229,7 +229,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_REG_DMABUF_MR)(
 				 IB_ACCESS_REMOTE_READ |
 				 IB_ACCESS_REMOTE_WRITE |
 				 IB_ACCESS_REMOTE_ATOMIC |
-				 IB_ACCESS_RELAXED_ORDERING);
+				 IB_ACCESS_OPTIONAL);
 	if (ret)
 		return ret;
 

-- 
2.52.0