rcu_dereference
fence = rcu_dereference(*ptr);
args->busy = busy_check_writer(rcu_dereference(obj->resv->fence_excl));
list = rcu_dereference(obj->resv->fence);
rcu_dereference(list->shared[i]);
request = rcu_dereference(active->request);
fence_excl = rcu_dereference(obj->fence_excl);
fobj = rcu_dereference(obj->fence);
shared[i] = rcu_dereference(fobj->shared[i]);
fence = rcu_dereference(obj->fence_excl);
rcu_dereference(obj->fence);
struct dma_fence *lfence = rcu_dereference(fobj->shared[i]);
rcu_dereference(obj->fence);
struct dma_fence *fence = rcu_dereference(fobj->shared[i]);
struct dma_fence *fence_excl = rcu_dereference(obj->fence_excl);