kmem_cache_shrink 2533 mm/slab.c      int kmem_cache_shrink(struct kmem_cache *cachep)
kmem_cache_shrink  626 mm/slob.c      int kmem_cache_shrink(struct kmem_cache *d)
kmem_cache_shrink 2760 mm/slub.c      int kmem_cache_shrink(struct kmem_cache *s)