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SubjectRe: [PATCH] slub: fix ksize() build error
On 02/26/11 11:10, Mariusz Kozlowski wrote:
> mm/slub.c: In function 'ksize':
> mm/slub.c:2728: error: implicit declaration of function 'slab_ksize'
>
> slab_ksize() needs to go out of CONFIG_SLUB_DEBUG section.
>
> Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>

Acked-by: Randy Dunlap <randy.dunlap@oracle.com>

Thanks.

> ---
> Maybe something like this? Compile tested for slub debug enabled/disabled.
>
> mm/slub.c | 48 ++++++++++++++++++++++++------------------------
> 1 files changed, 24 insertions(+), 24 deletions(-)
>
> diff --git a/mm/slub.c b/mm/slub.c
> index 217b5b5..ea6f039 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -281,6 +281,30 @@ static inline int slab_index(void *p, struct kmem_cache *s, void *addr)
> return (p - addr) / s->size;
> }
>
> +static inline size_t slab_ksize(const struct kmem_cache *s)
> +{
> +#ifdef CONFIG_SLUB_DEBUG
> + /*
> + * Debugging requires use of the padding between object
> + * and whatever may come after it.
> + */
> + if (s->flags & (SLAB_RED_ZONE | SLAB_POISON))
> + return s->objsize;
> +
> +#endif
> + /*
> + * If we have the need to store the freelist pointer
> + * back there or track user information then we can
> + * only use the space before that information.
> + */
> + if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER))
> + return s->inuse;
> + /*
> + * Else we can use all the padding etc for the allocation
> + */
> + return s->size;
> +}
> +
> static inline struct kmem_cache_order_objects oo_make(int order,
> unsigned long size)
> {
> @@ -797,30 +821,6 @@ static inline int slab_pre_alloc_hook(struct kmem_cache *s, gfp_t flags)
> return should_failslab(s->objsize, flags, s->flags);
> }
>
> -static inline size_t slab_ksize(const struct kmem_cache *s)
> -{
> -#ifdef CONFIG_SLUB_DEBUG
> - /*
> - * Debugging requires use of the padding between object
> - * and whatever may come after it.
> - */
> - if (s->flags & (SLAB_RED_ZONE | SLAB_POISON))
> - return s->objsize;
> -
> -#endif
> - /*
> - * If we have the need to store the freelist pointer
> - * back there or track user information then we can
> - * only use the space before that information.
> - */
> - if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER))
> - return s->inuse;
> - /*
> - * Else we can use all the padding etc for the allocation
> - */
> - return s->size;
> -}
> -
> static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, void *object)
> {
> flags &= gfp_allowed_mask;


--
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***


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