The only remaining use for this is to protect against setting a new exclusive
fence while we grab both exclusive and shared. That can also be archived by
looking if the exclusive fence has changed or not after completing the
operation.
Signed-off-by: Christian König
---
On Mon, Aug 05, 2019 at 05:07:41PM +0100, Chris Wilson wrote:
> Quoting Christian König (2019-08-05 16:45:54)
> > @@ -214,16 +214,16 @@ static __poll_t dma_buf_poll(struct file *file,
> > poll_table *poll)
> > return 0;
> >
> > retry:
> > - seq =
Quoting Christian König (2019-08-05 16:45:54)
> @@ -214,16 +214,16 @@ static __poll_t dma_buf_poll(struct file *file,
> poll_table *poll)
> return 0;
>
> retry:
> - seq = read_seqcount_begin(>seq);
> rcu_read_lock();
>
> + fence_excl =
