net/af_unix: Remove unused old_pid variable

Commit 109f6e39fa07c48f5801 ("af_unix: Allow SO_PEERCRED
to work across namespaces.") introduced the old_pid variable
in unix_listen, but it's never used.
Remove the declaration and the call to put_pid.

Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Link: https://lore.kernel.org/r/20201011153527.18628-1-orcohen@paloaltonetworks.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index eb82bdc..41c3303 100644 (file)
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -613,7 +613,6 @@ static int unix_listen(struct socket *sock, int backlog)
        int err;
        struct sock *sk = sock->sk;
        struct unix_sock *u = unix_sk(sk);
-       struct pid *old_pid = NULL;
 
        err = -EOPNOTSUPP;
        if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET)
@@ -634,7 +633,6 @@ static int unix_listen(struct socket *sock, int backlog)
 
 out_unlock:
        unix_state_unlock(sk);
-       put_pid(old_pid);
 out:
        return err;
 }