Re: pgd_init() Patch

[Geert Uytterhoeven <geert@linux-m68k.org>]

On Mon, 28 Jan 2002, Jun Sun wrote:
> Geert Uytterhoeven wrote:
> > On Mon, 28 Jan 2002, Phil Thompson wrote:
> > > Should USER_PTRS_PER_PGD be defined as (TASK_SIZE/PGDIR_SIZE) + 1?
> > 
> > You mean ((TASK_SIZE)+1)/PGDIR_SIZE?
> > 
> 
> No.  It should be
> 
> +#define USER_PTRS_PER_PGD      ((TASK_SIZE-1)/PGDIR_SIZE + 1)
> 
> Mathmatically, 
> 
> USER_PTRS_PER_PGD=ceil(TASK_SIZE/PGDIR_SIZE)

OK, ((TASK_SIZE+PGDIR_SIZE-1)/PGDIR_SIZE) in that case :-)

Gr{oetje,eeting}s,

                                                Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                                            -- Linus Torvalds