.

wcfs/wcfs.go

@@ -245,6 +245,7 @@ package main
 // 3) for head/bigfile/* the following invariant is maintained:
 //
 //	#blk ∈ OS file cache    =>    ZBlk(#blk) + all BTree/Bucket that lead to it  ∈ zhead cache(%)
+//	                              (ZBlk* in ghost state)
 //
 //    The invariant helps on invalidation: if we see a changed oid, and
 //    zhead.cache.lookup(oid) = ø -> we know we don't have to invalidate OS