Re: [PATCH 2/11] [NET] Convert sk_zapped into SOCK_ZAPPED flag

[Patrick McHardy <kaber@xxxxxxxxx>]

Thomas Graf wrote:
> * Patrick McHardy <422F5461.4080008@xxxxxxxxx> 2005-03-09 20:54
> > What about volatile ? sock_set_flag() uses __set_bit(), so its not
> > the same.
>
> I thought about this for a while but couldn't find a reason
> why it shouldn't work. Actually I don't even see any reason for
> having sk_zapped be volatile.
You're probably right. I believe this piece of code from 2.4 is the
reason for it beeing volatile:

#ifdef TCP_DEBUG
        if (sk->zapped) {
                printk(KERN_DEBUG "TCP: double destroy sk=%p\n", sk);
                sock_hold(sk);
        }
        sk->zapped = 1;
#endif

Regards
Patrick