drm/amdgpu: rename page_directory_fence to last_dir_update

Decribes better what this is used for.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -781,7 +781,7 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
 	if (r)
 		return r;
 
-	r = amdgpu_sync_fence(adev, &p->job->sync, vm->page_directory_fence);
+	r = amdgpu_sync_fence(adev, &p->job->sync, vm->last_dir_update);
 	if (r)
 		return r;
 

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -780,8 +780,8 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
 		goto error_free;
 
 	amdgpu_bo_fence(vm->page_directory, fence, true);
-	dma_fence_put(vm->page_directory_fence);
-	vm->page_directory_fence = dma_fence_get(fence);
+	dma_fence_put(vm->last_dir_update);
+	vm->last_dir_update = dma_fence_get(fence);
 	dma_fence_put(fence);
 
 	return 0;
@@ -1913,7 +1913,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 	if (r)
 		goto err;
 
-	vm->page_directory_fence = NULL;
+	vm->last_dir_update = NULL;
 
 	r = amdgpu_bo_create(adev, pd_size, align, true,
 			     AMDGPU_GEM_DOMAIN_VRAM,
@@ -1996,7 +1996,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 
 	amdgpu_bo_unref(&vm->page_directory->shadow);
 	amdgpu_bo_unref(&vm->page_directory);
-	dma_fence_put(vm->page_directory_fence);
+	dma_fence_put(vm->last_dir_update);
 }
 
 /**

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

@@ -100,7 +100,7 @@ struct amdgpu_vm {
 	/* contains the page directory */
 	struct amdgpu_bo	*page_directory;
 	unsigned		max_pde_used;
-	struct dma_fence		*page_directory_fence;
+	struct dma_fence	*last_dir_update;
 	uint64_t		last_eviction_counter;
 
 	/* array of page tables, one for each page directory entry */