.

wcfs/internal/zdata/δftail.go

@@ -199,8 +199,7 @@ func (δFtail *ΔFtail) Tail() zodb.Tid { return δFtail.δBtail.Tail() }
 // One root can be associated with several files (each provided on different Track calls).
 //
 // zblk can be nil, which represents a hole.
-//
-// XXX blk=-1 is used for tracking after Size (no zblk is accessed at all).
+// blk=-1 should be used for tracking after ZBigFile.Size() query (no zblk is accessed at all).
 //
 // Objects in path and zblk must be with .PJar().At() == .head
 func (δFtail *ΔFtail) Track(file *ZBigFile, blk int64, path []btree.LONode, zblk ZBlk) {
@@ -222,7 +221,6 @@ func (δFtail *ΔFtail) Track(file *ZBigFile, blk int64, path []btree.LONode, zb
 
 	foid := file.POid()
 	if blk == -1 {
-		// XXX blk = ∞ from beginning ?
 		blk = xbtree.KeyMax
 	}
 	δFtail.δBtail.Track(blk, path)