From 31e6d363abcd0d05766c82f1a9c905a4c974a199 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 17 Jun 2009 19:05:41 -0700 Subject: 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 Signed-off-by: David S. Miller --- net/ax25/af_ax25.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'net/ax25') diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 61b35b955490..da0f64f82b57 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -1690,7 +1690,8 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) switch (cmd) { case TIOCOUTQ: { long amount; - amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc); + + amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); if (amount < 0) amount = 0; res = put_user(amount, (int __user *)argp); @@ -1780,8 +1781,8 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) ax25_info.idletimer = ax25_display_timer(&ax25->idletimer) / (60 * HZ); ax25_info.n2count = ax25->n2count; ax25_info.state = ax25->state; - ax25_info.rcv_q = atomic_read(&sk->sk_rmem_alloc); - ax25_info.snd_q = atomic_read(&sk->sk_wmem_alloc); + ax25_info.rcv_q = sk_wmem_alloc_get(sk); + ax25_info.snd_q = sk_rmem_alloc_get(sk); ax25_info.vs = ax25->vs; ax25_info.vr = ax25->vr; ax25_info.va = ax25->va; @@ -1921,8 +1922,8 @@ static int ax25_info_show(struct seq_file *seq, void *v) if (ax25->sk != NULL) { seq_printf(seq, " %d %d %lu\n", - atomic_read(&ax25->sk->sk_wmem_alloc), - atomic_read(&ax25->sk->sk_rmem_alloc), + sk_wmem_alloc_get(ax25->sk), + sk_rmem_alloc_get(ax25->sk), sock_i_ino(ax25->sk)); } else { seq_puts(seq, " * * *\n"); -- cgit v1.2.3-59-g8ed1b