rwatson aa54f85939 Make sure to grab vnode lock on a vnode before calling VOP_GETATTR()
to perform an ownership test in revoke().  This is also required for
MAC hooks so that the vnode lock is held during a call to the MAC
framework.  Release the lock before calling VOP_REVOKE().

Discussed with:	phk, mckusick
2002-02-10 20:45:43 +00:00
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