On Thu, 2007-07-26 at 11:26 +0200, Peter Zijlstra wrote:

quoted text
> ---
>  mm/slub.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-2.6/mm/slub.c
> ===================================================================
> --- linux-2.6.orig/mm/slub.c
> +++ linux-2.6/mm/slub.c
> @@ -1131,6 +1131,7 @@ static void __free_slab(struct kmem_cach
>  		slab_pad_check(s, page);
>  		for_each_object(p, s, page_address(page))
>  			check_object(s, page, p, 0);
> +		ClearSlabDebug(page);
>  	}
>  
>  	mod_zone_page_state(page_zone(page),
> @@ -1169,7 +1170,6 @@ static void discard_slab(struct kmem_cac
>  
>  	atomic_long_dec(&n->nr_slabs);
>  	reset_page_mapcount(page);
> -	ClearSlabDebug(page);
>  	__ClearPageSlab(page);
>  	free_slab(s, page);
>  }
> 

Christoph, how about this bit, it looks to me like we clear SlabDebug()
before we hit the last check in __free_slab().

-
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