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authorBenjamin LaHaise <benjamin.c.lahaise@intel.com>2005-12-13 23:22:19 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-03 13:10:44 -0800
commitc1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088 (patch)
tree04ec26c728645dd1da2474b2b883a532b43811ad /net/core/stream.c
parentf1f71e03b17db3b9edb0264a8be7719bd5c35582 (diff)
downloadop-kernel-dev-c1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088.zip
op-kernel-dev-c1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088.tar.gz
[NET]: Avoid atomic xchg() for non-error case
It also looks like there were 2 places where the test on sk_err was missing from the event wait logic (in sk_stream_wait_connect and sk_stream_wait_memory), while the rest of the sock_error() users look to be doing the right thing. This version of the patch fixes those, and cleans up a few places that were testing ->sk_err directly. Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/stream.c')
-rw-r--r--net/core/stream.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/net/core/stream.c b/net/core/stream.c
index 15bfd03..35e2525 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -55,8 +55,9 @@ int sk_stream_wait_connect(struct sock *sk, long *timeo_p)
int done;
do {
- if (sk->sk_err)
- return sock_error(sk);
+ int err = sock_error(sk);
+ if (err)
+ return err;
if ((1 << sk->sk_state) & ~(TCPF_SYN_SENT | TCPF_SYN_RECV))
return -EPIPE;
if (!*timeo_p)
@@ -67,6 +68,7 @@ int sk_stream_wait_connect(struct sock *sk, long *timeo_p)
prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
sk->sk_write_pending++;
done = sk_wait_event(sk, timeo_p,
+ !sk->sk_err &&
!((1 << sk->sk_state) &
~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)));
finish_wait(sk->sk_sleep, &wait);
@@ -137,7 +139,9 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
sk->sk_write_pending++;
- sk_wait_event(sk, &current_timeo, sk_stream_memory_free(sk) &&
+ sk_wait_event(sk, &current_timeo, !sk->sk_err &&
+ !(sk->sk_shutdown & SEND_SHUTDOWN) &&
+ sk_stream_memory_free(sk) &&
vm_wait);
sk->sk_write_pending--;
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