From: David Woodhouse <David.Woodhouse@intel.com>
Date: Wed, 1 Jul 2009 18:30:28 +0000 (+0100)
Subject: intel-iommu: Kill superfluous mapping_lock
X-Git-Tag: v2.6.31-rc2~12^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=206a73c102fc480ba072a9388bc2142c303113aa;p=pandora-kernel.git

intel-iommu: Kill superfluous mapping_lock

Since we're using cmpxchg64() anyway (because that's the only way to do
an atomic 64-bit store on i386), we might as well ditch the extra
locking and just use cmpxchg64() to ensure that we don't add the page
twice.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

Reading git-diff-tree failed