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-rw-r--r--include/net/sch_generic.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index d5517719af4e..af4aa66aaa4e 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -1288,4 +1288,11 @@ void mq_change_real_num_tx(struct Qdisc *sch, unsigned int new_real_tx);
int sch_frag_xmit_hook(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb));
+/* Make sure qdisc is no longer in SCHED state. */
+static inline void qdisc_synchronize(const struct Qdisc *q)
+{
+ while (test_bit(__QDISC_STATE_SCHED, &q->state))
+ msleep(1);
+}
+
#endif