* [PATCH] ipv6: xfrm6_tunnel.c: Use built-in RCU list checking
@ 2020-02-21 16:24 madhuparnabhowmik10
2020-02-28 10:02 ` Steffen Klassert
0 siblings, 1 reply; 2+ messages in thread
From: madhuparnabhowmik10 @ 2020-02-21 16:24 UTC (permalink / raw)
To: steffen.klassert, herbert, davem, kuznet, yoshfuji
Cc: netdev, linux-kernel, joel, frextrite, linux-kernel-mentees,
paulmck, Madhuparna Bhowmik
From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
hlist_for_each_entry_rcu() has built-in RCU and lock checking.
Pass cond argument to list_for_each_entry_rcu() to silence
false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled
by default.
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
---
net/ipv6/xfrm6_tunnel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index e11bdb0aaa15..25b7ebda2fab 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -78,7 +78,7 @@ static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(struct net *net, const
hlist_for_each_entry_rcu(x6spi,
&xfrm6_tn->spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)],
- list_byaddr) {
+ list_byaddr, lockdep_is_held(&xfrm6_tunnel_spi_lock)) {
if (xfrm6_addr_equal(&x6spi->addr, saddr))
return x6spi;
}
--
2.17.1
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] ipv6: xfrm6_tunnel.c: Use built-in RCU list checking
2020-02-21 16:24 [PATCH] ipv6: xfrm6_tunnel.c: Use built-in RCU list checking madhuparnabhowmik10
@ 2020-02-28 10:02 ` Steffen Klassert
0 siblings, 0 replies; 2+ messages in thread
From: Steffen Klassert @ 2020-02-28 10:02 UTC (permalink / raw)
To: madhuparnabhowmik10
Cc: herbert, davem, kuznet, yoshfuji, netdev, linux-kernel, joel,
frextrite, linux-kernel-mentees, paulmck
On Fri, Feb 21, 2020 at 09:54:47PM +0530, madhuparnabhowmik10@gmail.com wrote:
> From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
>
> hlist_for_each_entry_rcu() has built-in RCU and lock checking.
>
> Pass cond argument to list_for_each_entry_rcu() to silence
> false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled
> by default.
>
> Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Applied, thanks!
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-02-21 16:24 [PATCH] ipv6: xfrm6_tunnel.c: Use built-in RCU list checking madhuparnabhowmik10
2020-02-28 10:02 ` Steffen Klassert
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