From e5dffbd159efc46df170c2a6f10ae072b44935ea Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 23 Jun 2022 04:34:47 +0000 Subject: [PATCH] ipmr: convert /proc handlers to rcu_read_lock() [ Upstream commit b96ef16d2f837870daaea51c38cd50458b95ad5c ] We can use standard rcu_read_lock(), to get rid of last read_lock(&mrt_lock) call points. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Stable-dep-of: fc9c273d6daa ("ipmr: fix tables suspicious RCU usage") Signed-off-by: Sasha Levin --- net/ipv4/ipmr.c | 8 ++++---- net/ipv6/ip6mr.c | 8 ++++---- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index db184cb826b9..fe3d23611a29 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -2896,7 +2896,7 @@ out: */ static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(mrt_lock) + __acquires(RCU) { struct mr_vif_iter *iter = seq->private; struct net *net = seq_file_net(seq); @@ -2908,14 +2908,14 @@ static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos) iter->mrt = mrt; - read_lock(&mrt_lock); + rcu_read_lock(); return mr_vif_seq_start(seq, pos); } static void ipmr_vif_seq_stop(struct seq_file *seq, void *v) - __releases(mrt_lock) + __releases(RCU) { - read_unlock(&mrt_lock); + rcu_read_unlock(); } static int ipmr_vif_seq_show(struct seq_file *seq, void *v) diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index c758d0cc6146..926baaf8661c 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -405,7 +405,7 @@ static void ip6mr_free_table(struct mr_table *mrt) */ static void *ip6mr_vif_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(mrt_lock) + __acquires(RCU) { struct mr_vif_iter *iter = seq->private; struct net *net = seq_file_net(seq); @@ -417,14 +417,14 @@ static void *ip6mr_vif_seq_start(struct seq_file *seq, loff_t *pos) iter->mrt = mrt; - read_lock(&mrt_lock); + rcu_read_lock(); return mr_vif_seq_start(seq, pos); } static void ip6mr_vif_seq_stop(struct seq_file *seq, void *v) - __releases(mrt_lock) + __releases(RCU) { - read_unlock(&mrt_lock); + rcu_read_unlock(); } static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)