PERFORCE change 105930 for review

[Intron is my alias on the Internet]

Alexander Leidinger wrote:

> Quoting John Baldwin <jhb at freebsd.org> (Mon, 11 Sep 2006 11:45:52 -0400):
> 
>> On Sunday 10 September 2006 05:56, Alexander Leidinger wrote:
>> > 	PROBLEMS:
>> > 	
>> > 	1. Why does uma_zdestroy(9) print message like:
>> > 	
>> > 	      Freed UMA keg was not empty (100 items).  Lost 2 pages of memory.
>> > 	
>> > 	   Does it represent any problems?
>> 
>> It means a memory leak.
> 
> Because this is verbatim from the submitter and I don't know if he is
> subscribed to perforce@, we should tell him about it... CCed. :-)
> 
> Bye,
> Alexander.
> 

But I have ensure that calling to uma_zalloc() and calling to uma_zfree()
appear strictly in pair in my code. Even the simplest testing program
can still lead to this kind of warning message (uma_zfree() is just next
to uma_zalloc()):

uma_zalloc(...);
uma_zfree(...);

------------------------------------------------------------------------
                                                From Beijing, China