Commit 021a17ed authored by Paolo Abeni's avatar Paolo Abeni Committed by David S. Miller

pfifo_fast: drop unneeded additional lock on dequeue

After the previous patch, for NOLOCK qdiscs, q->seqlock is
always held when the dequeue() is invoked, we can drop
any additional locking to protect such operation.
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 96009c7d
......@@ -97,6 +97,11 @@ static inline bool skb_array_empty_any(struct skb_array *a)
return ptr_ring_empty_any(&a->ring);
}
static inline struct sk_buff *__skb_array_consume(struct skb_array *a)
{
return __ptr_ring_consume(&a->ring);
}
static inline struct sk_buff *skb_array_consume(struct skb_array *a)
{
return ptr_ring_consume(&a->ring);
......
......@@ -656,7 +656,7 @@ static struct sk_buff *pfifo_fast_dequeue(struct Qdisc *qdisc)
if (__skb_array_empty(q))
continue;
skb = skb_array_consume_bh(q);
skb = __skb_array_consume(q);
}
if (likely(skb)) {
qdisc_qstats_cpu_backlog_dec(qdisc, skb);
......@@ -697,7 +697,7 @@ static void pfifo_fast_reset(struct Qdisc *qdisc)
if (!q->ring.queue)
continue;
while ((skb = skb_array_consume_bh(q)) != NULL)
while ((skb = __skb_array_consume(q)) != NULL)
kfree_skb(skb);
}
......
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