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| author | Benjamin LaHaise <benjamin.c.lahaise@intel.com> | 2005-12-13 23:22:19 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-01-03 13:10:44 -0800 |
| commit | c1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088 (patch) | |
| tree | 04ec26c728645dd1da2474b2b883a532b43811ad /include/net/sock.h | |
| parent | f1f71e03b17db3b9edb0264a8be7719bd5c35582 (diff) | |
| download | lwn-c1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088.tar.gz lwn-c1cbe4b7ad0bc4b1d98ea708a3fecb7362aa4088.zip | |
[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/sock.h')
| -rw-r--r-- | include/net/sock.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 982b4ecd187b..0fbae85c6d55 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; } |