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

[Dave Hansen]

On Wed, 2009-09-09 at 12:18 -0700, David Rientjes wrote:
> 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.

It shouldn't be too hard to do that, though.  Although a bit silly to
have make a copy_to_user() call for each ->parts[] page, it would be
pretty easy to implement.  

-- Dave

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