Re: [PATCH v5 0/6] fs/dcache: Track & limit # of negative dentries

[Linus Torvalds]

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