linux-kernel - Re: [PATCH 4/4] coredump: documentation for proc entry

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Message-ID: <45FFC168.9010807@hitachi.com>
Date:	Tue, 20 Mar 2007 20:11:36 +0900
From:	"Kawai, Hidehiro" <hidehiro.kawai.ez@...achi.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	Robin Holt <holt@....com>, David Howells <dhowells@...hat.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	sugita <yumiko.sugita.yf@...achi.com>,
	Satoshi OSHIMA <soshima@...hat.com>,
	Hideo AOKI <haoki@...hat.com>
Subject: Re: [PATCH 4/4] coredump: documentation for proc entry

Hi Pavel,
I'm sorry for my late reply.

Pavel Machek wrote:

> Hi!
> 
>>+If you don't want to dump all shared memory segments attached to pid 1234,
>>+write 0 to the process's proc file.
>>+
>>+  $ echo 1 > /proc/1234/coredump_omit_anonymous_shared
> 
> Write 0?

Thank you for pointing out. 
It seems I mistook when I changed the documents.
`write 1' is correct.


>>+When a new process is created, the process inherits the flag status from its
>>+parent. It is useful to set the flag before the program runs.
>>+For example:
>>+
>>+  $ echo 1 > /proc/self/coredump_omit_anonymous_shared
>>+  $ ./some_program
>>+
> 
> Notice that this docs is wrong. You have to retry until kernel stops
> producing spurious errors.
> 									Pavel
 
I'll fix the patchset so that kernel doesn't produce the spurious error.

For answers to your another mail, please wait a few days.
I'm still considering the answer partly. 

Thanks,
-- 
Hidehiro Kawai
Hitachi, Ltd., Systems Development Laboratory


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