On Thu, May 23, 2019 at 9:05 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote: > > From: Jason Gunthorpe <jgg@xxxxxxxxxxxx> > > This list is always read and written while holding hmm->lock so there is > no need for the confusing _rcu annotations. > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx> Acked-by: Souptick Joarder <jrdr.linux@xxxxxxxxx> > --- > mm/hmm.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/hmm.c b/mm/hmm.c > index 02752d3ef2ed92..b4aafa90a109a5 100644 > --- a/mm/hmm.c > +++ b/mm/hmm.c > @@ -912,7 +912,7 @@ int hmm_range_register(struct hmm_range *range, > /* Initialize range to track CPU page table update */ > mutex_lock(&range->hmm->lock); > > - list_add_rcu(&range->list, &range->hmm->ranges); > + list_add(&range->list, &range->hmm->ranges); > > /* > * If there are any concurrent notifiers we have to wait for them for > @@ -940,7 +940,7 @@ void hmm_range_unregister(struct hmm_range *range) > return; > > mutex_lock(&range->hmm->lock); > - list_del_rcu(&range->list); > + list_del(&range->list); > mutex_unlock(&range->hmm->lock); > > /* Drop reference taken by hmm_range_register() */ > -- > 2.21.0 >
