linux-kernel - Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

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Message-ID: <48427A13.7050704@cs.helsinki.fi>
Date:	Sun, 01 Jun 2008 13:29:39 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Paul Mundt <lethal@...ux-sh.org>,
	Pekka J Enberg <penberg@...helsinki.fi>,
	David Howells <dhowells@...hat.com>,
	Christoph Lameter <clameter@....com>,
	LKML <linux-kernel@...r.kernel.org>, cooloney@...nel.org,
	akpm@...ux-foundation.org, mpm@...enic.com
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

On Sun, Jun 01, 2008 at 12:13:02PM +0300, Pekka J Enberg wrote:
>> I mean, assuming the BUG_ON bits are bogus, then we should always pass the 
>> pointer to the allocator. I audited most of the callers and they all seem 
>> to be really just using kmalloc() for allocation anyway.
>>
>> What do you think?

Paul Mundt wrote:
> Isn't this what my original patch did? ;-)

Oh, almost, you had this bit in ksize() of SLAB:

+	page = virt_to_head_page(objp);
+	if (unlikely(!PageSlab(page)))
+		return PAGE_SIZE << compound_order(page);

Did you actually need it for something?

		Pekka
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