From: Shan Wei <shanwei88@gmail.com>
To: Chen Gang <gang.chen@asianux.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
David Miller <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>
Subject: Re: Fwd: Re: [PATCH] net: ipv6: change %8s to %s for rt->dst.dev->name in seq_printf of rt6_info_route
Date: Tue, 27 Nov 2012 11:17:09 +0800 [thread overview]
Message-ID: <50B430B5.1080700@gmail.com> (raw)
In-Reply-To: <50AEEF08.4000707@asianux.com>
Chen Gang said, at 2012/11/23 11:35:
> 2) about %*s:
> since kernel is an open system, IFNAMSIZ is belong to OS API level for outside
> it has effect both on individual kernel modules and user mode system call
> we need obey this rule, and %8s is not match this rule.
> so %8s is not suitable. (and now we have to choose %16s or %s).
Your patch will change the format of /proc/net/ipv6_route.
Why we need to keep be consistent with user mode?
However user operates device name, no effect on the showing of /proc/net/ipv6_route.
>
> for the format of information which seq_printf output:
> it is not belong to OS API level for outside (at least, for current case, it is true).
> so we need not keep 'compatible' of it, so %16s is not necessary.
Can you explain If we don't change to %s, what will happen?
>
> for keeping source code simple and clearly:
> %s is better than %16s.
>
> so for result, we should choose %s only (neither %16s nor %8s).
next prev parent reply other threads:[~2012-11-27 3:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-22 2:52 [PATCH] net: ipv6: change %8s to %s for rt->dst.dev->name in seq_printf of rt6_info_route Chen Gang
2012-11-22 5:28 ` Shan Wei
2012-11-22 8:37 ` Chen Gang
2012-11-23 3:35 ` Fwd: " Chen Gang
2012-11-27 3:17 ` Shan Wei [this message]
2012-11-27 4:18 ` Chen Gang
2012-11-27 4:45 ` Chen Gang
2012-11-27 5:40 ` Chen Gang
2012-11-27 5:52 ` Chen Gang
2012-11-28 5:54 ` Chen Gang
2012-11-27 4:56 ` Shan Wei
2012-11-27 5:35 ` Chen Gang
2012-11-29 1:43 ` [Consult] excuse me: sorry for the negative effects which I made Chen Gang
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