.

wcfs/wcfs.go

@@ -695,8 +695,8 @@ func (bfdir *BigFileDir) lookup(out *fuse.Attr, name string, fctx *fuse.Context)
 		return nil, eINVALf("not oid")
 	}
 
-	bfdir.head.zconnMu.Lock()
-	defer bfdir.head.zconnMu.Unlock()
+	bfdir.head.zconnMu.RLock()
+	defer bfdir.head.zconnMu.RUnlock()
 
 	defer func() {
 		if f != nil {
@@ -1080,8 +1080,8 @@ func (f *BigFile) readBlk(ctx context.Context, blk int64, dest []byte) error {
 
 // /(head|<rev>)/at -> readAt serves read.
 func (h *Head) readAt() []byte {
-	h.zconnMu.Lock()
-	defer h.zconnMu.Unlock()
+	h.zconnMu.RLock()
+	defer h.zconnMu.RUnlock()
 	return []byte(h.zconn.At().String())
 }