diff mbox

[2/6] af_iucv: block writing if msg limit is exceeded

Message ID 20120208102029.228513931@de.ibm.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

frank.blaschka@de.ibm.com Feb. 8, 2012, 10:19 a.m. UTC 
From: Ursula Braun <ursula.braun@de.ibm.com>

When polling on an AF_IUCV socket, writing should be blocked if the
number of pending messages exceeds a defined limit.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
---

 net/iucv/af_iucv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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diff mbox

Patch

--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -1490,7 +1490,7 @@  unsigned int iucv_sock_poll(struct file
 	if (sk->sk_state == IUCV_DISCONN)
 		mask |= POLLIN;
 
-	if (sock_writeable(sk))
+	if (sock_writeable(sk) && iucv_below_msglim(sk))
 		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
 	else
 		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);