diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 0875cf9d85b3..05c36833f6ee 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -454,8 +454,9 @@ static int fuse_flush(struct file *file, fl_owner_t id)
 	if (fuse_is_bad(inode))
 		return -EIO;
 
+	err = 0;
 	if (fc->no_flush)
-		return 0;
+		goto inval_attr_out;
 
 	err = write_inode_now(inode, 1);
 	if (err)
@@ -484,6 +485,14 @@ static int fuse_flush(struct file *file, fl_owner_t id)
 		fc->no_flush = 1;
 		err = 0;
 	}
+
+inval_attr_out:
+	/*
+	 * In memory i_blocks is not maintained by fuse, if writeback cache is
+	 * enabled, i_blocks from cached attr may not be accurate.
+	 */
+	if (!err && fc->writeback_cache)
+		fuse_invalidate_attr(inode);
 	return err;
 }