On Tue, Jul 23, 2019 at 02:17:31PM -0300, Jason Gunthorpe wrote: > That reminds me, this code is also leaking hmm_range_unregister() in > the success path, right? No, that is done by hmm_vma_range_done / nouveau_range_done for the success path. > > I think the right way to structure this is to move the goto again and > related into the nouveau_range_fault() so the whole retry algorithm is > sensibly self contained. Then we'd take svmm->mutex inside the helper and let the caller unlock that. Either way it is a bit of a mess, and I'd rather prefer if someone has the hardware would do a grand rewrite of this path eventually. Alternatively if no one signs up to mainain this code we should eventually drop it given the staging status.