.

wcfs/wcfs.go

@@ -1220,13 +1220,15 @@ func (f *BigFile) updateWatchers(ctx context.Context, blk int64, treepath []btre
 	blkrev := blkrevMax
 	blkrevRough := true
 
+	// XXX locking (f.watches)
+
 	wg, ctx := errgroup.WithContext(ctx)
 	for w := range f.watches {
 		w := w
 
 		fmt.Printf("S: read -> update watchers: w @%s\n", w.at)
 
-		// XXX locking
+		// XXX locking (w)
 
 		// the block is already covered by @w.at database view
 		if blkrev <= w.at {