On Sun, Mar 15, 2020 at 06:29:05PM +0800, Hillf Danton wrote: > > And make link_path_walk() _always_ assign ->last_type - in the only > > case when the value at the entry might survive to the return that value > > is always LAST_ROOT, inherited from path_init(). Move that assignment > > from path_init() into the beginning of link_path_walk(), to consolidate > > the things. > > > If you agree that the move is not a huge change, drop it for the sake of > init in order to close the time window of a random last_type. What time window of a random last_type and what does "drop for the sake of init" mean? Confused...