On Wed, Jun 26, 2019 at 11:18:23AM -0700, Ralph Campbell wrote:
> > diff --git a/mm/hmm.c b/mm/hmm.c
> > index b224ea635a7716..89549eac03d506 100644
> > +++ b/mm/hmm.c
> > @@ -64,7 +64,7 @@ static struct hmm *hmm_get_or_create(struct mm_struct *mm)
> > init_rwsem(>mirrors_sem);
> >
On 6/24/19 2:01 PM, Jason Gunthorpe wrote:
From: Jason Gunthorpe
If the trylock on the hmm->mirrors_sem fails the function will return
without decrementing the notifiers that were previously incremented. Since
the caller will not call invalidate_range_end() on EAGAIN this will result
in
From: Jason Gunthorpe
If the trylock on the hmm->mirrors_sem fails the function will return
without decrementing the notifiers that were previously incremented. Since
the caller will not call invalidate_range_end() on EAGAIN this will result
in notifiers becoming permanently incremented and
