On Wed, 11 May 2011, David Rientjes wrote: > This generates a warning without CONFIG_SLUB_DEBUG: > > mm/slub.c:335: warning: âget_mapâ defined but not used Subject: slub: Avoid warning for !CONFIG_SLUB_DEBUG Move the #ifdef so that get_map is only defined if CONFIG_SLUB_DEBUG is defined. Signed-off-by: Christoph Lameter <cl@xxxxxxxxx> --- 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 2011-05-12 11:38:42.000000000 -0500 +++ linux-2.6/mm/slub.c 2011-05-12 11:39:40.000000000 -0500 @@ -326,6 +326,7 @@ static inline int oo_objects(struct kmem return x.x & OO_MASK; } +#ifdef CONFIG_SLUB_DEBUG /* * Determine a map of object in use on a page. * @@ -341,7 +342,6 @@ static void get_map(struct kmem_cache *s set_bit(slab_index(p, s, addr), map); } -#ifdef CONFIG_SLUB_DEBUG /* * Debug settings: */