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: <Pine.LNX.4.64.0712131405390.25120@schroedinger.engr.sgi.com>
Date:	Thu, 13 Dec 2007 14:07:14 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52,
 [2.6.24-rc4-git5: Reported regressions from 2.6.23]

On Sun, 9 Dec 2007, Ingo Molnar wrote:

> unless i'm missing something obvious (and i easily might), i see SLUB as 
> SLAB reimplemented with a different queueing model. Not "without 
> queueing".

The "queue" that you are talking about is the freelist of a slab. It exist 
for each slab. SLAB uses a table of free entries there. The freelist is 
limited to a slab and thus the locality of the freelist is bound to 
the same page which avoids NUMA locality checks.


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