Re: [PATCH 1/2] mm, memcg: cg2 memory{.swap,}.peak write handlers

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Hi Tejun,

On Fri, Jul 26, 2024 at 4:22 PM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> Hello, David.
>
> On Tue, Jul 23, 2024 at 07:31:48PM -0400, David Finkel wrote:
> ...
> > +     A write of the string "reset" to this file resets it to the
> > +     current memory usage for subsequent reads through the same
> > +     file descriptor.
> > +     Attempts to write any other non-empty string will return EINVAL
> > +     (modulo leading and trailing whitespace).
>
> Let's just please do any write. We don't want to add complex write semantics
> to these files. Writing anything to reset these files is an established
> pattern and I don't think we gain anything by making this more complicated.

I still think something more limited is right here, but it seems that
there's consensus
that accepting all non-empty writes is the right option here, so I've
removed the check.
The next patchset will accept any (non-empty) write.

>
> Thanks.
>
> --
> tejun


Thanks,
-- 
David Finkel
Senior Principal Software Engineer, Core Services





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