Commit 1d1ef005 authored by John Fastabend's avatar John Fastabend Committed by Alexei Starovoitov
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bpf: sockmap, hash table is RCU so readers do not need locks 



This removes locking from readers of RCU hash table. Its not
necessary.

Fixes: 81110384 ("bpf: sockmap, add hash map support")
Signed-off-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 547b3aa4

kernel/bpf/sockmap.c

+0 −2
Original line number Diff line number Diff line
@@ -2467,10 +2467,8 @@ struct sock *__sock_hash_lookup_elem(struct bpf_map *map, void *key) 
	b = __select_bucket(htab, hash);

	head = &b->head;



	raw_spin_lock_bh(&b->lock);

	l = lookup_elem_raw(head, hash, key, key_size);

	sk = l ? l->sk : NULL;

	raw_spin_unlock_bh(&b->lock);

	return sk;

}