[Intel-gfx] [PATCH 07/23] drm/i915: Use per object locking in execbuf, v10.

Now that we changed execbuf submission slightly to allow us to do all pinning in one place, we can now simply add ww versions on top of struct_mutex. All we have to do is a separate path for -EDEADLK handling, which needs to unpin all gem bo's before dropping the lock, then starting over. This

[Intel-gfx] [PATCH 07/23] drm/i915: Use per object locking in execbuf, v10.

Now that we changed execbuf submission slightly to allow us to do all pinning in one place, we can now simply add ww versions on top of struct_mutex. All we have to do is a separate path for -EDEADLK handling, which needs to unpin all gem bo's before dropping the lock, then starting over. This