diff options
| author | Eric Dumazet <edumazet@google.com> | 2016-06-09 07:45:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-09 13:28:37 -0700 |
| commit | 52fbb2907988aa0583c6d9d53a56aee090b2df7e (patch) | |
| tree | d15d8d64e2160d72224285158cac6e1e8b343b04 /net/sched/sch_generic.c | |
| parent | 5362855aba7159aab8f7c6573eb675d9da317914 (diff) | |
net: sched: fix qdisc->running lockdep annotations
1) qdisc_run_begin() is really using the equivalent of a trylock.
Instead of using write_seqcount_begin(), use a combination of
raw_write_seqcount_begin() and correct lockdep annotation.
2) sch_direct_xmit() should use regular spin_lock(root_lock)
Fixes: f9eb8aea2a1e ("net_sched: transform qdisc running bit into a seqcount")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_generic.c')
| -rw-r--r-- | net/sched/sch_generic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index cebea73e70ac..cad810b45e31 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -137,10 +137,10 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q, HARD_TX_UNLOCK(dev, txq); } else { - spin_lock_nested(root_lock, SINGLE_DEPTH_NESTING); + spin_lock(root_lock); return qdisc_qlen(q); } - spin_lock_nested(root_lock, SINGLE_DEPTH_NESTING); + spin_lock(root_lock); if (dev_xmit_complete(ret)) { /* Driver sent out skb successfully or skb was consumed */ |