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| author | Takashi Iwai | 2010-08-18 15:17:30 +0200 |
|---|---|---|
| committer | Takashi Iwai | 2010-08-18 15:17:30 +0200 |
| commit | 6ab561c8aab2e4af535f09adbc6253f958536848 (patch) | |
| tree | 37846adb4ea106485720d113e252d71d615c23ed /net/sched/act_police.c | |
| parent | ALSA: usb: USB3 SuperSpeed sound support (diff) | |
| parent | ALSA: ISA: Remove snd-sgalaxy (diff) | |
| download | kernel-qcow2-linux-6ab561c8aab2e4af535f09adbc6253f958536848.tar.gz kernel-qcow2-linux-6ab561c8aab2e4af535f09adbc6253f958536848.tar.xz kernel-qcow2-linux-6ab561c8aab2e4af535f09adbc6253f958536848.zip | |
Merge branch 'topic/isa' into topic/misc
Diffstat (limited to 'net/sched/act_police.c')
| -rw-r--r-- | net/sched/act_police.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 654f73dff7c1..537a48732e9e 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -97,6 +97,11 @@ nla_put_failure: goto done; } +static void tcf_police_free_rcu(struct rcu_head *head) +{ + kfree(container_of(head, struct tcf_police, tcf_rcu)); +} + static void tcf_police_destroy(struct tcf_police *p) { unsigned int h = tcf_hash(p->tcf_index, POL_TAB_MASK); @@ -113,7 +118,11 @@ static void tcf_police_destroy(struct tcf_police *p) qdisc_put_rtab(p->tcfp_R_tab); if (p->tcfp_P_tab) qdisc_put_rtab(p->tcfp_P_tab); - kfree(p); + /* + * gen_estimator est_timer() might access p->tcf_lock + * or bstats, wait a RCU grace period before freeing p + */ + call_rcu(&p->tcf_rcu, tcf_police_free_rcu); return; } } @@ -397,6 +406,7 @@ static void __exit police_cleanup_module(void) { tcf_unregister_action(&act_police_ops); + rcu_barrier(); /* Wait for completion of call_rcu()'s (tcf_police_free_rcu) */ } module_init(police_init_module); |