linux-kernel - Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, [2.6.24-rc4-git5: Reported regressions from 2.6.23]

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Message-ID: <20071209075807.GB29587@elte.hu>
Date:	Sun, 9 Dec 2007 08:58:07 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <clameter@....com>
Subject: Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52,
	[2.6.24-rc4-git5: Reported regressions from 2.6.23]


* Andrew Morton <akpm@...ux-foundation.org> wrote:

> It's a kmap_atomic() debugging patch which I wrote ages ago and whcih 
> Ingo sucked into his tree.  I don't _think_ this warning is present in 
> your tree at all.
> 
> http://lkml.org/lkml/2007/11/29/157 is where it starts.
> 
> I had a lenghty back-and-forth with Christoph on this within the past 
> couple of months and I cannot locate the thread and I don't recall 
> what the upshot was and Christoph is still offline.
> 
> Knocking out __GFP_ZERO at the point where the slab allocator(s) call 
> the page allocator seems like a good approach to me.
> 
> But I don't think we need to do anything for 2.6.24..

ok - Rafael, please strike this off the regressions list, there is no 
problem in .24 other than the double memset for some SLOB metadata.

	Ingo
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