[Linux-kernel-mentees] [PATCH] net: 802: psnap.c: Use built-in RCU list checking
madhuparnabhowmik10 at gmail.com
madhuparnabhowmik10 at gmail.com
Fri Feb 21 16:19:47 UTC 2020
From: Madhuparna Bhowmik <madhuparnabhowmik10 at gmail.com>
list_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 at gmail.com>
---
net/802/psnap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/802/psnap.c b/net/802/psnap.c
index 40ab2aea7b31..4492e8d7ad20 100644
--- a/net/802/psnap.c
+++ b/net/802/psnap.c
@@ -30,7 +30,7 @@ static struct datalink_proto *find_snap_client(const unsigned char *desc)
{
struct datalink_proto *proto = NULL, *p;
- list_for_each_entry_rcu(p, &snap_list, node) {
+ list_for_each_entry_rcu(p, &snap_list, node, lockdep_is_held(&snap_lock)) {
if (!memcmp(p->type, desc, 5)) {
proto = p;
break;
--
2.17.1
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