Re: [patch] do_no_pfn()

Randy.Dunlap
2006-09-20T15:58:41Z

On 20 Sep 2006 03:25:25 -0400 Jes Sorensen wrote:

> include/linux/mm.h | 7 +++++
> mm/memory.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++-----
> 2 files changed, 64 insertions(+), 5 deletions(-)
>
> Index: linux-2.6/include/linux/mm.h
> ===================================================================
> --- linux-2.6.orig/include/linux/mm.h
> +++ linux-2.6/include/linux/mm.h

> @@ -625,6 +626,12 @@ static inline int page_mapped(struct pag
> #define NOPAGE_OOM ((struct page *) (-1))
>
> /*
> + * Error return values for the *_nopfn functions
> + */
> +#define NOPFN_SIGBUS ((unsigned long) -1)
> +#define NOPFN_OOM ((unsigned long) -2)

Is there any difference in the above and

#define NOPFN_SIGBUS -1UL
#define NOPFN_OOM -2UL

?
---
~Randy