diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e13b3c3..01e60aa 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1189,6 +1189,7 @@
 	.quota_write	= ext4_quota_write,
 #endif
 	.bdev_try_to_free_page = bdev_try_to_free_page,
+	.trim_fs	= ext4_trim_fs
 };
 
 static const struct super_operations ext4_nojournal_sops = {