On Wed, 7 Jul 1999 16:55:28 -0700 (PDT) 
 Julian Elischer <[EMAIL PROTECTED]> wrote:

 > or do what Kirk wants to do and merge the VM and Vnode structures
 > I belive the UVM does a bit in this direction due to kirk's influence.

A uvm_object is not a standalone thing in UVM.  Every thing that's
mappable in UVM has a uvm_object embedded in it.

In the case of vnodes, a vnode contains a uvm_vnode, which in turn contains
a uvm_object.  This has direct performance benefits as described in both
Chuck's thesis and in his USENIX paper.

Now, in the case of the chs-ubc2 branch of the NetBSD source tree, which is
where the unified buffer cache work is happening, there is almost no
distinction between a vnode and an object.

        -- Jason R. Thorpe <[EMAIL PROTECTED]>



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