D27097.id79195.diff
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D27097.id79195.diff
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	Index: sys/kern/kern_malloc.c
	===================================================================
	--- sys/kern/kern_malloc.c
	+++ sys/kern/kern_malloc.c
	@@ -1030,6 +1030,23 @@
	return (mem);
	}

	+/*
	+ * malloc_size2zone: returns the usable size if an allocation is performed.
	+ */
	+size_t
	+malloc_size2zone(size_t size)
	+{
	+ int indx;
	+
	+ if (size > kmem_zmax) {
	+ return (-1);
	+ }
	+ if (size & KMEM_ZMASK)
	+ size = (size & ~KMEM_ZMASK) + KMEM_ZBASE;
	+ indx = kmemsize[size >> KMEM_ZSHIFT];
	+ return (kmemzones[indx].kz_size);
	+}
	+
	/*
	* malloc_usable_size: returns the usable size of the allocation.
	*/
	Index: sys/sys/malloc.h
	===================================================================
	--- sys/sys/malloc.h
	+++ sys/sys/malloc.h
	@@ -251,6 +251,7 @@
	void malloc_type_list(malloc_type_list_func_t , void );
	void malloc_uninit(void *);
	size_t malloc_usable_size(const void *);
	+size_t malloc_size2zone(size_t);
	void realloc(void addr, size_t size, struct malloc_type *type, int flags)
	__result_use_check __alloc_size(2);
	void reallocf(void addr, size_t size, struct malloc_type *type, int flags)