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Date: Fri, 24 Apr 2015 05:37:21 -0700 (PDT)
From: Chris Torek <torek@elf.torek.net>
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To: dim@FreeBSD.org
Subject: Re: svn commit: r281451 - head/sys/vm
Cc: adrian@freebsd.org, dchagin@freebsd.org, scott4long@yahoo.com,
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True, it's not actually odd, it's just surprising the first time
one comes across it.

Also, I goofed in the text:

>> With the flexible array, (sizeof(struct uma_cache)) is going to be
>> 32 bytes smaller than without it.

It's `struct uma_zone` that shrinks by (potentially) more than one
would expect.  (The uma_cache struct is itself 32 bytes and is not
changed, so the args.size value should be the same -- implying that
some OTHER "sizeof(struct uma_zone)" is where things are going wrong.)

Chris