[NET]: Add some acquires/releases sparse annotations.
Add __acquires() and __releases() annotations to suppress some sparse
warnings.
example of warnings :
net/ipv4/udp.c:1555:14: warning: context imbalance in 'udp_seq_start' - wrong
count at exit
net/ipv4/udp.c:1571:13: warning: context imbalance in 'udp_seq_stop' -
unexpected unlock
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 3532843..02fcccd 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1550,6 +1550,7 @@
}
static void *udp_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(udp_hash_lock)
{
read_lock(&udp_hash_lock);
return *pos ? udp_get_idx(seq, *pos-1) : (void *)1;
@@ -1569,6 +1570,7 @@
}
static void udp_seq_stop(struct seq_file *seq, void *v)
+ __releases(udp_hash_lock)
{
read_unlock(&udp_hash_lock);
}