Re: [PATCH 13/21] m68k: rename __iounmap and mark it static

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Christoph,

On Thu, Oct 17, 2019 at 7:53 PM Christoph Hellwig <hch@xxxxxx> wrote:
> m68k uses __iounmap as the name for an internal helper that is only
> used for some CPU types.  Mark it static and give it a better name.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Thanks for your patch!

> --- a/arch/m68k/mm/kmap.c
> +++ b/arch/m68k/mm/kmap.c
> @@ -52,6 +52,7 @@ static inline void free_io_area(void *addr)
>
>  #define IO_SIZE                (256*1024)
>
> +static void __free_io_area(void *addr, unsigned long size);
>  static struct vm_struct *iolist;
>
>  static struct vm_struct *get_io_area(unsigned long size)
> @@ -90,7 +91,7 @@ static inline void free_io_area(void *addr)
>                 if (tmp->addr == addr) {
>                         *p = tmp->next;
>                         /* remove gap added in get_io_area() */
> -                       __iounmap(tmp->addr, tmp->size - IO_SIZE);
> +                       __free_io_area(tmp->addr, tmp->size - IO_SIZE);
>                         kfree(tmp);
>                         return;
>                 }
> @@ -249,12 +250,13 @@ void iounmap(void __iomem *addr)
>  }
>  EXPORT_SYMBOL(iounmap);
>
> +#ifndef CPU_M68040_OR_M68060_ONLY

Can you please move this block up, instead of adding more #ifdef cluttery?
That would also remove the need for a forward declaration.

>  /*
> - * __iounmap unmaps nearly everything, so be careful
> + * __free_io_area unmaps nearly everything, so be careful
>   * Currently it doesn't free pointer/page tables anymore but this
>   * wasn't used anyway and might be added later.
>   */
> -void __iounmap(void *addr, unsigned long size)
> +static void __free_io_area(void *addr, unsigned long size)
>  {
>         unsigned long virtaddr = (unsigned long)addr;
>         pgd_t *pgd_dir;
> @@ -297,6 +299,7 @@ void __iounmap(void *addr, unsigned long size)
>
>         flush_tlb_all();
>  }
> +#endif /* CPU_M68040_OR_M68060_ONLY */
>
>  /*
>   * Set new cache mode for some kernel address space.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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

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