On Fri, Sep 14, 2012 at 05:59:06PM +0800, Xiao Guangrong wrote: > Wrap the common operations into these two functions > > Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx> Why? I think people are used to spin_lock(lock) sequence spin_unlock(lock) So its easy to verify whether access to data structures are protected. Unrelated to this patch, one opportunity i see to simplify this code is: - error pfn / mmio pfn / invalid pfn relation Have the meaning of this bits unified in a single function/helper, see comment to patch 1 (perhaps you can further improve). -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html