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	{			{
	void *mem;			void *mem;

	if ((mem = realloc(addr, size, mtp, flags)) == NULL)			if ((mem = realloc(addr, size, mtp, flags)) == NULL)
	free(addr, mtp);			free(addr, mtp);
	return (mem);			return (mem);
	}			}

				/*
				* malloc_usable_size: returns the usable size of the allocation.
				*/
				size_t
				malloc_usable_size(const void *addr)
				{
				#ifndef DEBUG_REDZONE
				uma_zone_t zone;
				uma_slab_t slab;
				#endif
				u_long size;

				if (addr == NULL)
				return (0);

				#ifdef DEBUG_MEMGUARD
				if (is_memguard_addr(__DECONST(void *, addr)))
				return (memguard_get_req_size(addr));
				#endif

				#ifdef DEBUG_REDZONE
				size = redzone_get_size(__DECONST(void *, addr));
				#else
				vtozoneslab((vm_offset_t)addr & (~UMA_SLAB_MASK), &zone, &slab);
				if (slab == NULL)
				panic("malloc_usable_size: address %p(%p) is not allocated.\n",
				addr, (void *)((u_long)addr & (~UMA_SLAB_MASK)));

				if (!malloc_large_slab(slab))
				size = zone->uz_size;
				else
				size = malloc_large_size(slab);
				#endif
				return (size);
				}

	CTASSERT(VM_KMEM_SIZE_SCALE >= 1);			CTASSERT(VM_KMEM_SIZE_SCALE >= 1);

	/*			/*
	* Initialize the kernel memory (kmem) arena.			* Initialize the kernel memory (kmem) arena.
	*/			*/
	void			void
	kmeminit(void)			kmeminit(void)
	{			{
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