On Tue, 4 Dec 2007 12:21:00 +0100 Nick Piggin <[email protected]> wrote:
> + *
> + * Cannot support XIP and highmem, because our ->direct_access
> + * routine for XIP must return memory that is always addressable.
> + * If XIP was reworked to use pfns and kmap throughout, this
> + * restriction might be able to be lifted.
> */
> + gfp_flags = GFP_NOIO | __GFP_ZERO;
> +#ifndef CONFIG_BLK_DEV_XIP
> + gfp_flags |= __GFP_HIGHMEM;
> +#endif
A dubious tradeoff?
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