Optimize vmmeter locking.

In particular:
- Add an explicative table for locking of struct vmmeter members
- Apply new rules for some of those members
- Remove some unuseful comments

Heavily reviewed by: alc, bde, jeff
Approved by: jeff (mentor)

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
index a6de918..dfcade1 100644
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -655,7 +655,7 @@ vm_object_terminate(vm_object_t object)
 			"p->busy = %d, p->flags %x\n", p, p->busy, p->flags));
 		if (p->wire_count == 0) {
 			vm_page_free(p);
-			PCPU_INC(cnt.v_pfree);
+			cnt.v_pfree++;
 		} else {
 			vm_page_remove(p);
 		}