On Fri, Nov 3, 2017 at 2:09 AM, Michal Hocko <mhocko@xxxxxxxxxx> wrote: > On Thu 02-11-17 23:35:44, Shawn Landden wrote: >> 16 bytes per process is kinda spendy, but I want to keep >> lru behavior, which mem_score_adj does not allow. When a supervisor, >> like Android's user input is keeping track this can be done in user-space. >> It could be pulled out of task_struct if an cross-indexing additional >> red-black tree is added to support pid-based lookup. > > This is still an abuse and the patch is wrong. We really do have an API > to use I fail to see why you do not use it. When I looked at wait_queue_head_t it was 20 bytes.