MLX5_IB_MTT_WRITE
#define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)
(obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
mtt_entry |= MLX5_IB_MTT_WRITE;
WARN_ON(access_flags != (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE));