diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index e7bfad5446288f6b8f774a0488e50d8be3a0abaa..6f99be0228452b7bb3544c6cd47f1268e62e24e1 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -410,8 +410,9 @@ static int fuse_flush(struct file *file, fl_owner_t id)
 	if (is_bad_inode(inode))
 		return -EIO;
 
+	err = 0;
 	if (fc->no_flush)
-		return 0;
+		goto inval_attr_out;
 
 	err = write_inode_now(inode, 1);
 	if (err)
@@ -442,6 +443,14 @@ 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;
 }