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Date:   Wed, 15 May 2019 17:15:57 +0200
From:   Greg KH <>
To:     Michal Hocko <>
Cc:     Oleksandr Natalenko <>,, Kirill Tkhai <>,
        Vlastimil Babka <>,
        Matthew Wilcox <>,
        Pavel Tatashin <>,
        Timofey Titovets <>,
        Aaron Tomlin <>,
        Grzegorz Halat <>,,, Hugh Dickins <>,
        Suren Baghdasaryan <>,
        Minchan Kim <>
Subject: Re: [PATCH RFC v2 0/4] mm/ksm: add option to automerge VMAs

On Wed, May 15, 2019 at 04:51:51PM +0200, Michal Hocko wrote:
> [Cc Suren and Minchan - the email thread starts here]
> On Wed 15-05-19 08:53:11, Michal Hocko wrote:
> [...]
> > I will try to comment on the interface itself later. But I have to say
> > that I am not impressed. Abusing sysfs for per process features is quite
> > gross to be honest.
> I have already commented on this in other email. I consider sysfs an
> unsuitable interface for per-process API.

Wait, what?  A new sysfs file/directory per process?  That's crazy, no
one must have benchmarked it :)

And I agree, sysfs is not for that, please don't abuse it.  Proc is for
process apis.


greg k-h

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