[PATCH] use SK_MEM_QUANTUM_SHIFT in __sk_mem_reclaim()
authorEric Dumazet <dada1@cosmosbay.com>
Mon, 31 Dec 2007 23:00:50 +0000 (15:00 -0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Jan 2008 23:00:27 +0000 (15:00 -0800)
Avoid an expensive divide (as done in commit
18030477e70a826b91608aee40a987bbd368fec6 but lost in commit
23821d2653111d20e75472c8c5003df1a55309a8)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/sock.c

index 8c184c4a381120d497a0e0e9cb8a650c7519a09e..3804e7df626b45cf48b40727d710a0db5cccc30d 100644 (file)
@@ -1476,7 +1476,7 @@ void __sk_mem_reclaim(struct sock *sk)
 {
        struct proto *prot = sk->sk_prot;
 
-       atomic_sub(sk->sk_forward_alloc / SK_MEM_QUANTUM,
+       atomic_sub(sk->sk_forward_alloc >> SK_MEM_QUANTUM_SHIFT,
                   prot->memory_allocated);
        sk->sk_forward_alloc &= SK_MEM_QUANTUM - 1;