Need a pair decrement for fence's refcount if ttm_bo_add_move_fence failed?

[易林]

> Am 07.04.19 um 13:44 schrieb 易林:
> > Hi, all:
> >      when analyzing v5.1 source code, I notice that in ttm_bo_add_move_fence,
> > when reservation_object_reserve_shared failed and return ENOMEM,
> > the fence's refcount increased without a pair decrement even after return to ttm_bo_add_move_fence's caller ttm_bo_mem_force_space:
> >
> > static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
> > 				 struct ttm_mem_type_manager *man,
> > 				 struct ttm_mem_reg *mem)
> > {
> >          ......
> > 	fence = dma_fence_get(man->move);
> > 	spin_unlock(&man->move_lock);
> >
> > 	if (fence) {
> > 		reservation_object_add_shared_fence(bo->resv, fence);
> >
> > 		ret = reservation_object_reserve_shared(bo->resv, 1);
> > 		if (unlikely(ret))
> > 			return ret;
> >
> > 		dma_fence_put(bo->moving);
> > 		bo->moving = fence;
> > 	}
> >
> > 	return 0;
> > }
> >
> > can this lead to the imbalance of the fence's refcount? though the ENOMEN almost won't be trigger.
> 
> Yeah, the fence is leaked in the error path. Feel free to provide a 
> patch to fix this.
> 
> Otherwise I will provide one in the next merge window.
> 
> Thanks,
> Christian.
> 
> >
> > Best Regards
> >
> > Lin Yi
> 

when I git clone your maintained subsystem from 'git://people.freedesktop.org/~agd5f/linux' provided on Maintainer list, why all the commits is below 2011?

so where can I get the newest subsystem version?

Thanks,
Lin Yi.