.

wcfs/misc.go

@@ -676,6 +676,13 @@ type ΔFTail struct {
 	fileIdx map[*btree.LOBTree]SetBigFile	// root -> {} BigFile	XXX root -> oid?
 }
 
+func NewΔFTail(at0 zodb.Tid) *ΔFTail {
+	return &ΔFTail{
+		ΔTail:   xbtree.NewΔTail(at0),
+		fileIdx: make(map[*btree.LOBTree]SetBigFile),
+	}
+}
+
 func (δf *ΔFTail) Track(file *BigFile, path []btree.LONode) {
 	δf.ΔTail.Track(path)
 	root := path[0].(*btree.LOBTree)

wcfs/wcfs.go

@@ -1880,7 +1880,7 @@ func main() {
 		fsNode:   newFSNode(fSticky),
 		head:     head,
 		fileTab:  make(map[zodb.Oid]*BigFile),
-		δFtail:   NewΔFtail(zhead.At()),
+		δFtail:   NewΔFTail(zhead.At()),
 	}
 	head.bfdir = bfdir