diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 5fac4f259965167f1344ec2ba4e2ca8f1c556630..9949d0f332c2afc0327ed2615315cf7b95059642 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1759,6 +1759,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 
 		if (!(map.m_flags & F2FS_MAP_FLAGS)) {
 			map.m_lblk++;
+			map.m_len--;
 			continue;
 		}