diff options
| author | Eric Dumazet <edumazet@google.com> | 2022-06-23 04:34:46 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-06-24 11:34:38 +0100 |
| commit | 194366b28b8306b7a24596c57c09635ab2891252 (patch) | |
| tree | a149fa59a5f11cd1274f15eff2818a2a767e5456 /net/ipv4 | |
| parent | 6fa40a29021976c91b6ad720285bdfd4410aaa34 (diff) | |
| download | linux-next-194366b28b8306b7a24596c57c09635ab2891252.tar.gz | |
ipmr: adopt rcu_read_lock() in mr_dump()
We no longer need to acquire mrt_lock() in mr_dump,
using rcu_read_lock() is enough.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ipmr.c | 2 | ||||
| -rw-r--r-- | net/ipv4/ipmr_base.c | 8 |
2 files changed, 4 insertions, 6 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 69ccd3d7c655..38963b8de7af 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -3027,7 +3027,7 @@ static int ipmr_dump(struct net *net, struct notifier_block *nb, struct netlink_ext_ack *extack) { return mr_dump(net, nb, RTNL_FAMILY_IPMR, ipmr_rules_dump, - ipmr_mr_table_iter, &mrt_lock, extack); + ipmr_mr_table_iter, extack); } static const struct fib_notifier_ops ipmr_notifier_ops_template = { diff --git a/net/ipv4/ipmr_base.c b/net/ipv4/ipmr_base.c index 59f62b938472..271dc03fc6db 100644 --- a/net/ipv4/ipmr_base.c +++ b/net/ipv4/ipmr_base.c @@ -399,7 +399,6 @@ int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, struct netlink_ext_ack *extack), struct mr_table *(*mr_iter)(struct net *net, struct mr_table *mrt), - rwlock_t *mrt_lock, struct netlink_ext_ack *extack) { struct mr_table *mrt; @@ -416,10 +415,9 @@ int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, int vifi; /* Notifiy on table VIF entries */ - read_lock(mrt_lock); + rcu_read_lock(); for (vifi = 0; vifi < mrt->maxvif; vifi++, v++) { - vif_dev = rcu_dereference_check(v->dev, - lockdep_is_held(mrt_lock)); + vif_dev = rcu_dereference(v->dev); if (!vif_dev) continue; @@ -430,7 +428,7 @@ int mr_dump(struct net *net, struct notifier_block *nb, unsigned short family, if (err) break; } - read_unlock(mrt_lock); + rcu_read_unlock(); if (err) return err; |