linux-kernel - Re: [patch] remove MAX_ARG

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Message-ID: <20061229215714.GA21694@elte.hu>
Date:	Fri, 29 Dec 2006 22:57:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Russell King <rmk+lkml@....linux.org.uk>
Cc:	Ollie Wild <aaw@...gle.com>, linux-kernel@...r.kernel.org,
	parisc-linux@...ts.parisc-linux.org,
	Linus Torvalds <torvalds@...l.org>,
	Arjan van de Ven <arjan@...radead.org>, linux-mm@...ck.org,
	Andrew Morton <akpm@...l.org>, Andi Kleen <ak@....de>,
	linux-arch@...r.kernel.org, David Howells <dhowells@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [patch] remove MAX_ARG_PAGES


* Russell King <rmk+lkml@....linux.org.uk> wrote:

> On Fri, Dec 29, 2006 at 09:03:57PM +0100, Ingo Molnar wrote:
> > FYI, i have forward ported your MAX_ARG_PAGES limit removal patch to 
> > 2.6.20-rc2 and have included it in the -rt kernel. It's working great - 
> > i can now finally do a "ls -t patches/*.patch" in my patch repository - 
> > something i havent been able to do for years ;-)
> 
> How do the various autoconf stuff react to this?  Eg, I notice the 
> following in various configure scripts:
> 
> checking the maximum length of command line arguments... 32768

yes, that's how libtool works, it goes from 32K downwards to figure out 
a maximum. I dont see a problem there.

you can find a few other variants at:

  http://www.google.com/codesearch?q=%22checking+the+maximum+length+of+command+line+arguments%22&hl=en&btnG=Search+Code

worst-case the test-command would get a segfault from the default stack 
limit. (8MB on Fedora)

	Ingo
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