Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8df09ea3b8ccfe0c94844102d33fa46f57c08d9e
Commit: 8df09ea3b8ccfe0c94844102d33fa46f57c08d9e
Parent: ce55dd3610f7ac29bf8d159c2e2ace9aaf2c3038
Author: Eric Dumazet <[EMAIL PROTECTED]>
AuthorDate: Fri Dec 21 03:07:41 2007 -0800
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 14:59:59 2008 -0800
[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 <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
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 416bc99..e178b49 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)
-
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