.

wcfs/wcfs.go

@@ -1106,7 +1106,9 @@ func (f *BigFile) readBlk(ctx context.Context, blk int64, dest []byte) (err erro
 // updateWatchers complements readBlk and update watchers of the file after a
 // block was loaded from ZODB and before block data is returned to kernel.
 //
-// see "7.2) for all registered client@at watchers ..."
+// See "7.2) for all registered client@at watchers ..."
+//
+// Called with f.head.zconnMu rlocked.
 func (f *BigFile) updateWatchers(blk int64, treepath []zodb.IPersistent, pathRevMax zodb.Tid) {
 	// only head/ is being watched for
 	if f.head.rev != 0 {
@@ -1122,9 +1124,10 @@ func (f *BigFile) updateWatchers(blk int64, treepath []zodb.IPersistent, pathRev
 	blkrevmax, _ := f.δFtail.LastRevOf(blk, f.zfile.PJar().At())	// XXX = f.head.zconn.At()
 	blkrevmax = tidmin(blkrevmax, pathRevMax)
 
+	for w := range f.watchers {
+		_ = w
+	}
 /*
-	// XXX remmapping - only if head.rev == 0
-	// XXX -> own func?
 	// XXX locking
 	for _, mapping := range f.mappings {
 		if revmax <= mapping.at || !mapping.blkrange.in(blk) {