linux-kernel - Re: [uClinux-dev] v3.15-rc1 slab allocator broken on m68knommu (coldfire)

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Date:	Wed, 16 Apr 2014 18:06:57 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Steven King <sfking@...dc.com>
Cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	uClinux development list <uclinux-dev@...inux.org>
Subject: Re: [uClinux-dev] v3.15-rc1 slab allocator broken on m68knommu (coldfire)

Hi Steven,

On Wed, Apr 16, 2014 at 5:47 PM, Steven King <sfking@...dc.com> wrote:
> --- a/mm/slab.c
> +++ b/mm/slab.c
> @@ -2572,13 +2572,13 @@ static void *alloc_slabmgmt(struct kmem_cache *cachep,
>         return freelist;
>  }
>
> -static inline freelist_idx_t get_free_obj(struct page *page, unsigned char idx)
> +static inline freelist_idx_t get_free_obj(struct page *page, unsigned int idx)
>  {
>         return ((freelist_idx_t *)page->freelist)[idx];
>  }
>
>  static inline void set_free_obj(struct page *page,
> -                                       unsigned char idx, freelist_idx_t val)
> +                                       unsigned int idx, freelist_idx_t val)
>  {
>         ((freelist_idx_t *)(page->freelist))[idx] = val;
>  }
>
>
> then v3.15-rc1 will boot using the slab allocator.

Is "idx" ever larger than 255?

Gr{oetje,eeting}s,

                        Geert

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