.

wcfs/wcfs.go

@@ -632,6 +632,7 @@ type BigFile struct {
 
 	// blocks that were ever read-accessed (head/ only)	XXX locking by bfdir.δFmu ?
 	// XXX = δFtail.Tracked(f) ?
+	// XXX goes away if δFtail query returns only tracked blocks
 	accessed setI64
 
 	// inflight loadings of ZBigFile from ZODB.