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authorHannes Frederic Sowa <hannes@stressinduktion.org>2016-04-05 17:10:15 +0200
committerDavid S. Miller <davem@davemloft.net>2016-04-07 16:44:14 -0400
commit1e1d04e678cf72442f57ce82803c7a407769135f (patch)
tree8ea1054b59c4abe211ffff0b81f34589b0089f22 /net/socket.c
parent61881cfb5ad80c1d0a46ca6d08b7e271892b2ff6 (diff)
downloadlinux-1e1d04e678cf72442f57ce82803c7a407769135f.tar.bz2
net: introduce lockdep_is_held and update various places to use it
The socket is either locked if we hold the slock spin_lock for lock_sock_fast and unlock_sock_fast or we own the lock (sk_lock.owned != 0). Check for this and at the same time improve that the current thread/cpu is really holding the lock. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c
index 979d3146b081..afa3c3470717 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1046,7 +1046,7 @@ static int sock_fasync(int fd, struct file *filp, int on)
return -EINVAL;
lock_sock(sk);
- wq = rcu_dereference_protected(sock->wq, sock_owned_by_user(sk));
+ wq = rcu_dereference_protected(sock->wq, lockdep_sock_is_held(sk));
fasync_helper(fd, filp, on, &wq->fasync_list);
if (!wq->fasync_list)