bms 3600006e8c Further locking improvements for vr(4):
- Add *_locked() entry points as needed to avoid unnecessary lock thrashing.
 - Use these entry points wisely.
 - Only acquire the lock once when servicing an interrupt.
 - Check 'suspended' on interrupt to avoid racing detach.
 - Correct a mis-spelled comment.
 - Don't take the lock in vr_reset() to avoid lock thrashing in attach.
  - Comment this.

Reviewed by:	-net (silence)
2004-07-09 00:17:14 +00:00
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