diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 193d920..3f9b457 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -457,6 +457,8 @@
 		seq_puts(seq, ",notreelog");
 	if (btrfs_test_opt(root, FLUSHONCOMMIT))
 		seq_puts(seq, ",flushoncommit");
+	if (btrfs_test_opt(root, DISCARD))
+		seq_puts(seq, ",discard");
 	if (!(root->fs_info->sb->s_flags & MS_POSIXACL))
 		seq_puts(seq, ",noacl");
 	return 0;