Message-ID: <49547836.7040907@hitachi.com>
Date: Fri, 26 Dec 2008 15:22:46 +0900
From: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
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To: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       linux-kernel@vger.kernel.org, yumiko.sugita.yf@hitachi.com,
       satoshi.oshima.fk@hitachi.com
Subject: Re: [PATCH] coredump_filter: enable to change the default filter
References: <4940B426.6040509@hitachi.com> 
    <20081211154349.5000.KOSAKI.MOTOHIRO@jp.fujitsu.com> 
    <20081211151003.00572e04.akpm@linux-foundation.org> 
    <20081211232205.ED188FC3AB@magilla.sf.frob.com> 
    <494B71D6.3080602@hitachi.com> 
    <20081219195311.81C4AFC351@magilla.sf.frob.com>
In-Reply-To: <20081219195311.81C4AFC351@magilla.sf.frob.com>
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Hi,

I'm sorry for late reply.

Roland McGrath wrote:

>>However, we would need a special care for PID namespace if we use
>>init's coredump_filter as default.  For a process with new PID
>>namespace and new /proc, writing to /proc/1/coredump_filter doesn't
>>mean changing default, although it's not a usual operation.
> 
> I'd figured that private PID namespaces with their own init would want
> their own private settings for this default too.

Probably it's true, but I'm not sure if having coredump_filter have
two means is acceptable.  init in a private PID namespace can die
and dump a core file.  So its coredump_filter has two means; default
setting for the namespace and setting for itself.  
 
Thanks,
-- 
Hidehiro Kawai
Hitachi, Systems Development Laboratory
Linux Technology Center


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