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ipmr: convert /proc handlers to rcu_read_lock()

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[ Upstream commit b96ef16d2f ]

We can use standard rcu_read_lock(), to get rid
of last read_lock(&mrt_lock) call points.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: fc9c273d6d ("ipmr: fix tables suspicious RCU usage")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Dumazet
2022-06-23 04:34:47 +00:00
committed by Greg Kroah-Hartman
parent a9615376a9
commit e5dffbd159
2 changed files with 8 additions and 8 deletions
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net/ipv4/ipmr.c
+4 -4
View File
@@ -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)
net/ipv6/ip6mr.c
+4 -4
View File
@@ -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)