Re: Define CONFIG_BOUNCE to avoid useless inclusion of bouncebuffer logic.

[KAMEZAWA Hiroyuki]

On Mon, 21 May 2007 21:03:40 -0700 (PDT)
Christoph Lameter <clameter@xxxxxxx> wrote:

> The bounce buffer logic is included on systems that do not need it.
> If a system does not have zones like ZONE_DMA and ZONE_HIGHMEM that
> can lead to the use of bounce buffers then there is no need to reserve 
> memory pools etc etc. This is true f.e. for SGI Altix.

> +config BOUNCE
> +	def_bool y
> +	depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM)
> +

AFAIK, ppc has only ZONE_DMA and it never needs bounce.
Is this ok ?

-Kame

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