Michal Hocko <mhocko@xxxxxxxxxx> writes: > On Wed 01-04-20 09:11:13, Huang, Ying wrote: > [...] >> Then what is the check !PageSwapBacked() && PageSwapCache() for? To >> prevent someone to change the definition of PageSwapCache() in the >> future to break this? > > Yes this is my understading. It is essentially an assert that enforces > the assumption about swap cache vs. swap backed being coupled. OK. Then we can just keep the current code. Best Regards, Huang, Ying