[PATCH] dma-fence: allow dma fence to have their own lock

[Sergey Senozhatsky]

On (22/05/30 16:55), Christian König wrote:
> Am 30.05.22 um 16:22 schrieb Sergey Senozhatsky:
> > [SNIP]
> > So the `lock` should have at least same lifespan as the DMA fence
> > that borrows it, which is impossible to guarantee in our case.
> 
> Nope, that's not correct. The lock should have at least same lifespan as the
> context of the DMA fence.

How does one know when it's safe to release the context? DMA fence
objects are still transparently refcount-ed and "live their own lives",
how does one synchronize lifespans?