From owner-freebsd-stable@FreeBSD.ORG  Mon Sep 17 17:27:00 2012
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From: John Baldwin <jhb@freebsd.org>
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Date: Mon, 17 Sep 2012 13:26:59 -0400
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Cc: 
Subject: [PATCH] Locking for adv(4), adw(4), aha(4), ahb(4), aic(4),
	and bt(4)
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I have patches to add locking to the adv(4), adw(4), aha(4), ahb(4), aic(4), 
and bt(4) drivers so that they no longer use Giant.  I would appreciate any 
testing folks are able to do.  The patches are against HEAD but should apply 
to 8 or 9.  Make sure you have INVARIANTS and INVARIANT_SUPPORT enabled for 
any initial testing that you do.  Thanks!

http://www.FreeBSD.org/~jhb/patches/adv_locking.patch
http://www.FreeBSD.org/~jhb/patches/adw_locking.patch
http://www.FreeBSD.org/~jhb/patches/aha_locking.patch
http://www.FreeBSD.org/~jhb/patches/ahb_locking.patch
http://www.FreeBSD.org/~jhb/patches/aic_locking.patch
http://www.FreeBSD.org/~jhb/patches/bt_locking.patch

-- 
John Baldwin