[Intel-gfx] [PATCH 4/8] drm/i915/gt: Guard timeline pinning with its own mutex

[Matthew Auld]

On Wed, 14 Aug 2019 at 10:28, Chris Wilson <chris at chris-wilson.co.uk> wrote:
>
> In preparation for removing struct_mutex from around context retirement,
> we need to make timeline pinning safe. Since multiple engines/contexts
> can share a single timeline, it needs to be protected by a mutex.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

With a more accurate commit message,
Reviewed-by: Matthew Auld <matthew.auld at intel.com>