On Sat 03-02-18 16:48:28, Tetsuo Handa wrote: > Michal, what do you think? If no comment, let's try page_owner + SystemTap > and check whether there are some characteristics with stalling pages. I am sorry, I was on vacation and now catching up. So I will not get to this anytime soon. Next week hopefully, but I cannot promise anything. I am not sure page_owner will help us much here. We know this is a shmem page. Pagelock tracking is quite a PITA so a bisection sounds like a less PITA even though the reproduction might take quite a lot of time. Another approach would be to reduce the problem space, e.g. rule out zram by using a different swap storage. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
