dma_fence_is_later
if (dma_fence_is_later(b, a))
else if (dma_fence_is_later(a, b))
if (*keep && dma_fence_is_later(*keep, fence))
if (dma_fence_is_later(fence, entry)) {
if (dma_fence_is_later(fence, entry)) {
if (dma_fence_is_later(fence, tmp)) {
if (!dma_fence_is_later(&signaled->f, &curr->f))
return f1 == f2 || dma_fence_is_later(f1, f2);
if (dma_fence_is_later(f1, f2))