[PATCH v2] dma-buf: Move dma_buf_release() from fops to dentry_ops

[Chris Wilson]

Quoting Sumit Semwal (2020-06-16 13:42:13)
> Hello,
> 
> If there are no objections to this, I will plan to merge it soon.

I was going to suggest running it against our CI, but that's unavailable
at the moment.

There's a particularly nasty BUG_ON() in dma_buf_release that we hit
irregularly, that this might help with.
-Chris