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authorDavid S. Miller <davem@davemloft.net>2017-12-29 15:14:27 -0500
committerDavid S. Miller <davem@davemloft.net>2017-12-29 15:42:26 -0500
commit6bb8824732f69de0f233ae6b1a8158e149627b38 (patch)
tree78642311a28f42df9042da41eb98652c39d51327 /net/sched/sch_generic.c
parentd367341b25bd5aef3bf5524baa6f73e16ceced85 (diff)
parent2758b3e3e630ba304fc4aca434d591e70e528298 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
net/ipv6/ip6_gre.c is a case of parallel adds. include/trace/events/tcp.h is a little bit more tricky. The removal of in-trace-macro ifdefs in 'net' paralleled with moving show_tcp_state_name and friends over to include/trace/events/sock.h in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_generic.c')
-rw-r--r--net/sched/sch_generic.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 28b2a7964133..cc069b2acf0e 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -1261,6 +1261,8 @@ 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;
}
@@ -1276,7 +1278,7 @@ 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.
*/