> What testing did you do of this? I have this crash in today's testing: My test is this: 1.Configure zram for swap. 2.Run some program malloc and access large memory, make sure they can cause swap. 3.Watch count_shadow_nodes() and shadow_lru_isolate() to make sure that shadow_nodes are really shrinking by adding printk(). Really sorry for inadequate test, I will try more tests include drop_caches by sysctl.
