diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 294e71576cec973ffed0c28ca3760e58df121504..5fac4f259965167f1344ec2ba4e2ca8f1c556630 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1686,7 +1686,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 
 	/* writeback all dirty pages in the range */
 	err = filemap_write_and_wait_range(inode->i_mapping, range->start,
-						range->start + range->len);
+						range->start + range->len - 1);
 	if (err)
 		goto out;