extern int zft_vmalloc_once(void *new, size_t size);
extern int zft_vcalloc_once(void *new, size_t size);
extern int zft_vmalloc_always(void *new, size_t size);
-extern int zft_vcalloc_always(void *new, size_t size);
extern void zft_vfree(void *old, size_t size);
extern void *zft_kmalloc(size_t size);
extern void zft_kfree(void *old, size_t size);