diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 2e46771..8e01214 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2858,7 +2858,8 @@
 	struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
 	int bsbits, max;
 	ext4_lblk_t end;
-	loff_t size, orig_size, start_off;
+	loff_t size, start_off;
+	loff_t orig_size __maybe_unused;
 	ext4_lblk_t start;
 	struct ext4_inode_info *ei = EXT4_I(ac->ac_inode);
 	struct ext4_prealloc_space *pa;