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[rlc-10/6.12.0-211.37.1.el10_2] net/sched: act_api: use RCU with deferred freeing for action lifecycle #1490

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[rlc-10/6.12.0-211.37.1.el10_2] net/sched: act_api: use RCU with deferred freeing for action lifecycle #1490

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7 changes: 1 addition & 6 deletions net/sched/act_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -112,11 +112,6 @@ struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action,
}
EXPORT_SYMBOL(tcf_action_set_ctrlact);

/* XXX: For standalone actions, we don't need a RCU grace period either, because
* actions are always connected to filters and filters are already destroyed in
* RCU callbacks, so after a RCU grace period actions are already disconnected
* from filters. Readers later can not find us.
*/
static void free_tcf(struct tc_action *p)
{
struct tcf_chain *chain = rcu_dereference_protected(p->goto_chain, 1);
Expand All @@ -129,7 +124,7 @@ static void free_tcf(struct tc_action *p)
if (chain)
tcf_chain_put_by_act(chain);

kfree(p);
kfree_rcu_mightsleep(p);
}

static void offload_action_hw_count_set(struct tc_action *act,
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