On 29-Mar-00 Mike Castle wrote:
> On Tue, Mar 28, 2000 at 03:42:30PM -0800, Jeremy Fitzhardinge wrote:
>> Yes, but it needn't be as complex as putting locking everywhere. In
>> the
>> case where there was no shared credential change, the fast path is
>> still
>> pretty fast.
>
> Don't you still need to lock/make use of credential/unlock? Otherwise
> you
> have a race condition on SMP boxes.
If you use a generation counter, you wouldn't even need to take the lock
unless the creds had actually changed; you'd only get contention if
someone were actually updating the credentials at that instant.
J
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