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

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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
  - From: Nick Piggin <[email protected]>

References:
- DMA memory, split_page, BUG_ON(PageCompound()), sound
  - From: Marc Singer <[email protected]>
- Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
  - From: Nick Piggin <[email protected]>
- Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
  - From: Marc Singer <[email protected]>
- Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
  - From: Nick Piggin <[email protected]>

Prev by Date: Re: [patch] spinlocks: remove 'volatile'
Next by Date: Re: [PATCH v2] cirrus-logic-framebuffer-i2c-support.patch
Previous by thread: Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
Next by thread: Re: DMA memory, split_page, BUG_ON(PageCompound()), sound
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]