Commit 9ce12eb1 authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
Browse files

netlink: Annotate RCU locking for seq_file walker 



Silences the following sparse warnings:
net/netlink/af_netlink.c:2926:21: warning: context imbalance in 'netlink_seq_start' - wrong count at exit
net/netlink/af_netlink.c:2972:13: warning: context imbalance in 'netlink_seq_stop' - unexpected unlock

Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93f56081

net/netlink/af_netlink.c

+2 −0
Original line number Diff line number Diff line
@@ -2921,6 +2921,7 @@ static struct sock *netlink_seq_socket_idx(struct seq_file *seq, loff_t pos) 
}



static void *netlink_seq_start(struct seq_file *seq, loff_t *pos)

	__acquires(RCU)

{

	rcu_read_lock();

	return *pos ? netlink_seq_socket_idx(seq, *pos - 1) : SEQ_START_TOKEN;
@@ -2970,6 +2971,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos) 
}



static void netlink_seq_stop(struct seq_file *seq, void *v)

	__releases(RCU)

{

	rcu_read_unlock();

}

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