Re: DMA memory, split_page, BUG_ON(PageCompound()), sound

[Russell King]

On Mon, Jul 10, 2006 at 04:59:48PM +1000, Nick Piggin wrote:
> I guess you could do it a number of ways. Maybe having GFP_USERMAP
> set __GFP_USERMAP|__GFP_COMP, and the arm dma memory allocator can
> strip the __GFP_COMP.
> 
> If you get an explicit __GFP_COMP passed down, the allocator doesn't
> know whether that was because they want a user mappable area, or
> really want a compound page (in which case, stripping __GFP_COMP is
> the wrong thing to do).

So I'll mask off __GFP_COMP for the time being in the ARM dma allocator
with a note to this effect?

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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