In message <[EMAIL PROTECTED]>, Kirk McKusick writes:
>I am still of the opinion that merging VM objects and vnodes would
>be a good idea. Although it would touch a huge number of lines of
>code, when the dust settled, it would simplify some nasty bits of
>the system.
When I first heard you say this I thought you were off your rockers,
but gradually I have come to think that you may be right.
I think the task will be easier if we get the vnode/buf relationship
untangled a bit first.
I may also pay off to take vnodes out of diskoperations entirely before
we try the merge.
>Under the old name cache implementation, decreasing
>the number of vnodes was slow and hard. With the current name cache
>implementation, decreasing the number of vnodes would be easy.
Actually the main problem is that NFS relies on vnodes never being
freed to hold "soft references" using "struct vnode * + v_id).
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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FreeBSD committer | BSD since 4.3-tahoe
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