Tentitive UFS patch to narrow down dup alloc panics

[Matthew Dillon]

:I have been running this patch on a few machines which are regularly
:under heavy I/O load the past 4 days and haven't had any problems.  I
:would feel comfortable if you wanted to go ahead and commit this into
:the tree for further testing.
:
:-- 
:                                            -David

    I am 'almost' comfortable with it.  I'm running buildworld loops on my
    test boxes.  If they are still good at the end of the week I will commit
    it.

					-Matt
					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>