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net: correct off-by-one write allocations reports

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commit 2b85a34e91
(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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2009-06-17 19:05:41 -07:00 • committed by David S. Miller
commit 31e6d363ab
25 changed files with 58 additions and 51 deletions
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4
net/x25/af_x25.c
View file

@ -1271,8 +1271,8 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
switch (cmd) {
case TIOCOUTQ: {
int amount = sk->sk_sndbuf -
atomic_read(&sk->sk_wmem_alloc);
int amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
if (amount < 0)
amount = 0;
rc = put_user(amount, (unsigned int __user *)argp);

4
net/x25/x25_proc.c
View file

@ -163,8 +163,8 @@ static int x25_seq_socket_show(struct seq_file *seq, void *v)
devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr,
x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ,
x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ,
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);
out:
return 0;