Btrfs: clean up btrfs_ordered_update_i_size

Since we have a good helper entry_end, use it for ordered extent.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ whitespace reformatting ]
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ordered-data.c

@@ -1042,26 +1042,23 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
 		/* We treat this entry as if it doesn't exist */
 		if (test_bit(BTRFS_ORDERED_UPDATED_ISIZE, &test->flags))
 			continue;
-		if (test->file_offset + test->len <= disk_i_size)
+
+		if (entry_end(test) <= disk_i_size)
 			break;
 		if (test->file_offset >= i_size)
 			break;
-		if (entry_end(test) > disk_i_size) {
+
 		/*
-			 * we don't update disk_i_size now, so record this
-			 * undealt i_size. Or we will not know the real
-			 * i_size.
+		 * We don't update disk_i_size now, so record this undealt
+		 * i_size. Or we will not know the real i_size.
 		 */
 		if (test->outstanding_isize < offset)
 			test->outstanding_isize = offset;
 		if (ordered &&
-			    ordered->outstanding_isize >
-			    test->outstanding_isize)
-				test->outstanding_isize =
-						ordered->outstanding_isize;
+		    ordered->outstanding_isize > test->outstanding_isize)
+			test->outstanding_isize = ordered->outstanding_isize;
 		goto out;
 	}
-	}
 	new_i_size = min_t(u64, offset, i_size);
 
 	/*