Re: [PATCH v2] fs: fsnotify: account fsnotify metadata to kmemcg

From: Shakeel Butt
Date: Thu Jan 25 2018 - 15:20:10 EST


On Wed, Jan 24, 2018 at 11:51 PM, Amir Goldstein <amir73il@xxxxxxxxx> wrote:
>
> There is a nicer alternative, instead of failing the file access,
> an overflow event can be queued. I sent a patch for that and Jan
> agreed to the concept, but thought we should let user opt-in for this
> change:
> https://marc.info/?l=linux-fsdevel&m=150944704716447&w=2
>
> So IMO, if user opts-in for OVERFLOW instead of ENOMEM,
> charging the listener memcg would be non controversial.
> Otherwise, I cannot say that starting to charge the listener memgc
> for events won't break any application.
>

Thanks Amir, I will send out patches soon for directed charging for
fsnotify. Also are you planning to work on the opt-in overflow for the
above case? Should I wait for your patch?

thanks,
Shakeel