linux-kernel - Re: [Bug #13319] Page allocation failures with b43 and p54usb

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Message-ID: <alpine.DEB.2.00.0907271113460.8408@chino.kir.corp.google.com>
Date:	Mon, 27 Jul 2009 11:16:16 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Christoph Lameter <cl@...ux-foundation.org>
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Larry Finger <Larry.Finger@...inger.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: [Bug #13319] Page allocation failures with b43 and p54usb

On Mon, 27 Jul 2009, Christoph Lameter wrote:

> On Mon, 27 Jul 2009, David Rientjes wrote:
> 
> > We need DEBUG_FLAGS to determine which flags to mask off to reduce the
> > minimum order, so I don't see DEBUG_FLAGS_SIZE as troublesome.
> >
> > Christoph?
> 
> Post a patch? Otherwise just go ahead.
> 
> 

My patch is already in Pekka's slab-2.6.git tree at 
http://git.kernel.org/?p=linux/kernel/git/penberg/slab-2.6.git;a=commit;h=fa5ec8a1f66f3c2a3af723abcf8085509c9ee682

You had proposed http://marc.info/?l=linux-kernel&m=124725166205814, which 
moves the mask to kmem_cache_open() and calls calculate_sizes() twice.  
That eliminates DEBUG_FLAGS_SIZE, but I don't see that define as being 
troublesome since we must define DEBUG_FLAGS to specify what options add 
metdata anyway.
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