netdev - Re: [PATCH] net: ipv6: change %8s to %s for rt->dst.dev->name in seq_printf of rt6_info

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Date:	Mon, 05 Nov 2012 11:02:48 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Shan Wei <shanwei88@...il.com>
CC:	davem@...emloft.net, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: ipv6: change %8s to %s for rt->dst.dev->name in
 seq_printf of rt6_info_route

> 
> 1. not to send same patch triple times. 

  thanks, I shall notice, next time.
  (I shall 'believe' another members).

> 2. config your email client,because tab is changed to space.
>    you can read Documentation/email-clients.txt.

  1) thanks. I shall notice, next time.
  2) now, I get gvim as extention editor for thounderbird
  3) the patch is generated by `git format-patch -s --summary --stat`
     it use "' '\t" as head, I do not touch it, maybe it is correct.

welcome any members to giving additional suggestions and completions.

thanks

the modified contents are below,
-----------------------------------------------------------------------------------

  the length of rt->dst.dev->name is 16 (IFNAMSIZ)
  in seq_printf, it is not suitable to use %8s for rt->dst.dev->name.
  so change it to %s, since each line has not been solid any more.

  additional information:

    %8s  limit the width, not for the original string output length
         if name length is more than 8, it still can be fully displayed.
         if name length is less than 8, the ' ' will be filled before name.

    %.8s truly limit the original string output length (precision)

Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 net/ipv6/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c42650c..b60bc52 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2835,7 +2835,7 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 	} else {
 		seq_puts(m, "00000000000000000000000000000000");
 	}
-	seq_printf(m, " %08x %08x %08x %08x %8s\n",
+	seq_printf(m, " %08x %08x %08x %08x %s\n",
 		   rt->rt6i_metric, atomic_read(&rt->dst.__refcnt),
 		   rt->dst.__use, rt->rt6i_flags,
 		   rt->dst.dev ? rt->dst.dev->name : "");
-- 
1.7.9.5

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