net: correct off-by-one write allocations reports

commit 2b85a34e911bf483c27cfdd124aeb1605145dc80
(net: No more expensive sock_hold()/sock_put() on each tx)
changed initial sk_wmem_alloc value.

We need to take into account this offset when reporting
sk_wmem_alloc to user, in PROC_FS files or various
ioctls (SIOCOUTQ/TIOCOUTQ)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index cd911904cbe..ce51ce012cd 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1205,7 +1205,7 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 long amount;
 
                 lock_sock(sk);
-                amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+                amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
                 if (amount < 0)
                         amount = 0;
                 release_sock(sk);
@@ -1341,8 +1341,8 @@ static int nr_info_show(struct seq_file *seq, void *v)
                         nr->n2count,
                         nr->n2,
                         nr->window,
-                        atomic_read(&s->sk_wmem_alloc),
-                        atomic_read(&s->sk_rmem_alloc),
+                        sk_wmem_alloc_get(s),
+                        sk_rmem_alloc_get(s),
                         s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
 
                 bh_unlock_sock(s);