[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>
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@ -445,7 +445,7 @@ static inline int sk_acceptq_is_full(struct sock *sk)
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*/
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*/
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static inline int sk_stream_min_wspace(struct sock *sk)
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static inline int sk_stream_min_wspace(struct sock *sk)
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{
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{
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return sk->sk_wmem_queued / 2;
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return sk->sk_wmem_queued >> 1;
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}
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}
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static inline int sk_stream_wspace(struct sock *sk)
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static inline int sk_stream_wspace(struct sock *sk)
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@ -1187,7 +1187,7 @@ static inline void sk_wake_async(struct sock *sk, int how, int band)
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static inline void sk_stream_moderate_sndbuf(struct sock *sk)
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static inline void sk_stream_moderate_sndbuf(struct sock *sk)
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{
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{
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if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) {
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if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) {
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sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued / 2);
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sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued >> 1);
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sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF);
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sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF);
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}
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}
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}
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}
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@ -1211,7 +1211,7 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk)
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*/
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*/
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static inline int sock_writeable(const struct sock *sk)
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static inline int sock_writeable(const struct sock *sk)
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{
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{
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return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2);
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return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1);
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}
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}
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static inline gfp_t gfp_any(void)
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static inline gfp_t gfp_any(void)
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