diff options
| author | John W. Linville <linville@tuxdriver.com> | 2010-07-27 11:59:19 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-07-27 11:59:19 -0400 |
| commit | 800f65bba8d2030b3fef62850e203f9f176625a8 (patch) | |
| tree | 6507c4fe7a0826c253b4afb29375ab306a0fd9c8 /net/sched/act_police.c | |
| parent | 06b3cda0c12986f5bba578b918b188d731c4e191 (diff) | |
| parent | b3190df628617c7a4f188a9465aeabe1f5761933 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-commands.h
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 654f73dff7c..537a48732e9 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); |