diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2007-12-21 03:07:41 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:59:59 -0800 |
| commit | 8df09ea3b8ccfe0c94844102d33fa46f57c08d9e (patch) | |
| tree | a7e91a1e2c9eea21b1e1a6a67bd855899627aafe | |
| parent | ce55dd3610f7ac29bf8d159c2e2ace9aaf2c3038 (diff) | |
[SOCK] Avoid integer divides where not necessary in include/net/sock.h
Because sk_wmem_queued, sk_sndbuf are signed, a divide per two
may force compiler to use an integer divide.
We can instead use a right shift.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sock.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 416bc994adad..e178b49eefbb 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -445,7 +445,7 @@ static inline int sk_acceptq_is_full(struct sock *sk) */ static inline int sk_stream_min_wspace(struct sock *sk) { - return sk->sk_wmem_queued / 2; + return sk->sk_wmem_queued >> 1; } static inline int sk_stream_wspace(struct sock *sk) @@ -1187,7 +1187,7 @@ static inline void sk_wake_async(struct sock *sk, int how, int band) static inline void sk_stream_moderate_sndbuf(struct sock *sk) { if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) { - sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued / 2); + sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued >> 1); sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF); } } @@ -1211,7 +1211,7 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk) */ static inline int sock_writeable(const struct sock *sk) { - return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2); + return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1); } static inline gfp_t gfp_any(void) |