[PATCH 2/3] dma-buf/sync_file: add sync_file_get_fence()

[Chris Wilson]

On Thu, Jun 09, 2016 at 12:05:29PM -0300, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> 
> Creates a function that given an sync file descriptor returns a
> fence_collection containing all fences in the sync_file.
> 
> If there is only one fence in the sync_file this fence itself is returned,
> however if there is more than one, a fence_collection fence is returned.
> 
> v2: Comments by Daniel Vetter
> 	- Adapt to new version of fence_collection_init()
> 	- Hold a reference for the fence we return
> 
> v3:     - Adapt to use fput() directly
> 	- rename to sync_file_get_fence() as we always return one fence
> 
> v4: Adapt to use fence_array

The sync_file looks just like a fence_array plus struct file integration.
Is there a good reason why we cannot just use fence_array here?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre