On Thu, 22 Mar 2007 17:51:11 -0700 "Ken Chen" <[EMAIL PROTECTED]> wrote:
> +#ifdef CONFIG_HIGHMEM
> +#define pipe_kmap kmap
> +#define pipe_kmap_atomic kmap_atomic
> +#else /* CONFIG_HIGHMEM */
> +static inline void *pipe_kmap(struct page *page)
> +{
> + return (void *) page->private;
> +}
> +static inline void *pipe_kmap_atomic(struct page *page, enum km_type type)
> +{
> + pagefault_disable();
> + return pipe_kmap(page);
> +}
> +#endif
If we're going to do this then we should also implement pipe_kunmap_atomic().
Relying upon kunmap_atomic() internals like this is weird-looking, and is
fragile
against future changes to kunmap_atomic().
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