linux-kernel - Re: [RFC 0/4] CONFIG_STABLE to switch off development checks

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Date:	Mon, 04 Jun 2007 18:38:14 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Christoph Lameter <clameter@....com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org
Subject: Re: [RFC 0/4] CONFIG_STABLE to switch off development checks

Dave Kleikamp wrote:
> I'm on Christoph's side here.  I don't think it makes sense for any code
> to ask to allocate zero bytes of memory and expect valid memory to be
> returned.
> 
> Would a compromise be to return a pointer to some known invalid region?
> This way the kmalloc(0) call would appear successful to the caller, but
> any access to the memory would result in an exception.

I would think returning 1 as the address would work here, it's not NULL 
but any access to that page should still oops..

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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