The function scans @delaying_queue and stops at the first inode
whose dirtied_when is after *work->older_than_this. So the expired
ones being moved are those before *work->older_than_this. Correct
the comment here.
Reviewed-by: NJan Kara <jack@suse.cz>
Signed-off-by: NWang Sheng-Hui <shhuiw@gmail.com>