On Sun, Jul 1, 2018 at 10:52 PM Waiman Long <longman@xxxxxxxxxx> wrote: > > A rogue application can potentially create a large number of negative > dentries in the system consuming most of the memory available if it > is not under the direct control of a memory controller that enforce > kernel memory limit. I certainly don't mind the patch series, but I would like it to be accompanied with some actual example numbers, just to make it all a bit more concrete. Maybe even performance numbers showing "look, I've filled the dentry lists with nasty negative dentries, now it's all slower because we walk those less interesting entries". Linus