In article <[EMAIL PROTECTED]> (at Mon, 24 Dec 2007 15:47:32 +0100 (CET)), 
Julia Lawall <[EMAIL PROTECTED]> says:

> From: Julia Lawall <[EMAIL PROTECTED]>
> 
> The functions time_before, time_before_eq, time_after, and time_after_eq
> are more robust for comparing jiffies against other values.


> - jiffies >= E
> + time_after_eq(jiffies,E)


> diff -r -u -p a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
> --- a/net/decnet/af_decnet.c  2007-11-08 08:00:53.000000000 +0100
> +++ b/net/decnet/af_decnet.c  2007-12-23 20:30:40.000000000 +0100
:
> @@ -601,7 +602,7 @@ int dn_destroy_timer(struct sock *sk)
>       if (sk->sk_socket)
>               return 0;
>  
> -     if ((jiffies - scp->stamp) >= (HZ * decnet_time_wait)) {
> +     if (time_before_eq(jiffies, scp->stamp + HZ * decnet_time_wait)) {
>               dn_unhash_sock(sk);
>               sock_put(sk);
>               return 1;

ugh?

> --- a/net/decnet/dn_timer.c   2006-11-30 19:05:46.000000000 +0100
> +++ b/net/decnet/dn_timer.c   2007-12-23 20:30:40.000000000 +0100
> @@ -21,6 +21,7 @@
>  #include <linux/netdevice.h>
>  #include <linux/timer.h>
>  #include <linux/spinlock.h>
> +#include <linux/jiffies.h>
>  #include <net/sock.h>
>  #include <asm/atomic.h>
>  #include <net/flow.h>
> @@ -96,7 +97,7 @@ static void dn_slow_timer(unsigned long 
>        * since the last successful transmission.
>        */
>       if (scp->keepalive && scp->keepalive_fxn && (scp->state == DN_RUN)) {
> -             if ((jiffies - scp->stamp) >= scp->keepalive)
> +             if (time_before_eq(jiffies, scp->stamp + scp->keepalive))
>                       scp->keepalive_fxn(sk);
>       }
>  

ugh?

--yoshfuji
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