diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 49cef61f6a39f..9055e19b01ef1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1654,8 +1654,6 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
 					     clear_bits,
 					     page_ops);
 		start += cur_alloc_size;
-		if (start >= end)
-			return ret;
 	}
 
 	/*
@@ -1664,9 +1662,11 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
 	 * space_info's bytes_may_use counter, reserved in
 	 * btrfs_check_data_free_space().
 	 */
-	extent_clear_unlock_delalloc(inode, start, end, locked_page,
-				     clear_bits | EXTENT_CLEAR_DATA_RESV,
-				     page_ops);
+	if (start < end) {
+		clear_bits |= EXTENT_CLEAR_DATA_RESV;
+		extent_clear_unlock_delalloc(inode, start, end, locked_page,
+					     clear_bits, page_ops);
+	}
 	return ret;
 }