linux-kernel - Re: [2.6.27.24] Kernel coredump to a pipe is failing

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Message-ID: <20090526231428.GK846@one.firstfloor.org>
Date:	Wed, 27 May 2009 01:14:28 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Andi Kleen <andi@...stfloor.org>, paul@...-scientist.net,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6.27.24] Kernel coredump to a pipe is failing

On Tue, May 26, 2009 at 04:00:17PM -0700, Andrew Morton wrote:
> dump_write() doesn't seem right, either.  If ->write() returns, say,
> 100 then the dump should keep on going.  At present it treats this
> return as an error.

I think that's correct actually. Short write typically means serious 
issue like disk full or broken pipe, so stopping is good.

> I wonder why the signal problem has just turned up now - did we change
> the pipe code or something?

No idea.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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