diff options
| -rw-r--r-- | net/sched/sch_generic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index cd1b200acae7..661c7144b53a 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -1040,6 +1040,8 @@ void mini_qdisc_pair_swap(struct mini_Qdisc_pair *miniqp, if (!tp_head) { RCU_INIT_POINTER(*miniqp->p_miniq, NULL); + /* Wait for flying RCU callback before it is freed. */ + rcu_barrier_bh(); return; } @@ -1055,7 +1057,7 @@ void mini_qdisc_pair_swap(struct mini_Qdisc_pair *miniqp, rcu_assign_pointer(*miniqp->p_miniq, miniq); if (miniq_old) - /* This is counterpart of the rcu barrier above. We need to + /* This is counterpart of the rcu barriers above. We need to * block potential new user of miniq_old until all readers * are not seeing it. */ |