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Re: Replace lockmgr for vnodes
On Sat, Jan 26, 2008 at 05:57:50PM +0000, Andrew Doran wrote:
>> 4) I think we can rip out the "UPPER LOCK" stuff in layerfs. It dated from
>> when lower file systems didn't do locking. The only thing now that doesn't
>> export a vn_lock is unionfs, which does do correct locking. Sorry, I've
>> been meaning to kill it but haven't gotten to it.
>
> Sounds like union-over-union should be prevented? I'll see about removing
> it.
It seems like if unionfs does proper locking, it ought to be able to
take unions of anything, including other unionfses.
Am I missing something?
--
David A. Holland
dholland%netbsd.org@localhost
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