linux-kernel - Re: [patch 3/4 -mm] flex_array: poison free elements

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Date:	Wed, 9 Sep 2009 12:18:53 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 3/4 -mm] flex_array: poison free elements

On Wed, 9 Sep 2009, Dave Hansen wrote:

> I don't know of any offhand.  Someone mentioned oprofile buffers at some
> point, but I looked through it and it didn't pop out at me.
> 

Their length and element size fit the prerequisites of using flex array, 
but they cannot be copied to userspace as a string the way we can with 
vmalloc'd memory.
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