Provide a method to calculate the number of pages needed to store a given number of slab objects (upper bound when considering possible partial and free slabs). Signed-off-by: Peter Zijlstra --- include/linux/slab.h | 1 + mm/slab.c | 6 ++++++ 2 files changed, 7 insertions(+) Index: linux-2.6-git/include/linux/slab.h =================================================================== --- linux-2.6-git.orig/include/linux/slab.h 2007-01-09 11:28:32.000000000 +0100 +++ linux-2.6-git/include/linux/slab.h 2007-01-09 11:30:16.000000000 +0100 @@ -43,6 +43,7 @@ typedef struct kmem_cache kmem_cache_t _ */ void __init kmem_cache_init(void); extern int slab_is_available(void); +extern unsigned int kmem_cache_objs_to_pages(struct kmem_cache *, int); struct kmem_cache *kmem_cache_create(const char *, size_t, size_t, unsigned long, Index: linux-2.6-git/mm/slab.c =================================================================== --- linux-2.6-git.orig/mm/slab.c 2007-01-09 11:30:00.000000000 +0100 +++ linux-2.6-git/mm/slab.c 2007-01-09 11:30:16.000000000 +0100 @@ -4482,3 +4482,9 @@ unsigned int ksize(const void *objp) return obj_size(virt_to_cache(objp)); } + +unsigned int kmem_cache_objs_to_pages(struct kmem_cache *cachep, int nr) +{ + return ((nr + cachep->num - 1) / cachep->num) << cachep->gfporder; +} +EXPORT_SYMBOL_GPL(kmem_cache_objs_to_pages); -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/