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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 /include/net
parentf1f71e03b17db3b9edb0264a8be7719bd5c35582 (diff)
[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 'include/net')
-rw-r--r--include/net/sock.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 982b4ecd187..0fbae85c6d5 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1166,7 +1166,10 @@ static inline int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb)
static inline int sock_error(struct sock *sk)
{
- int err = xchg(&sk->sk_err, 0);
+ int err;
+ if (likely(!sk->sk_err))
+ return 0;
+ err = xchg(&sk->sk_err, 0);
return -err;
}