linux-kernel - Re: [RFC PATCH] mm/workingset : judge file page activity via timestamp

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Message-ID: <CAGWkznH6MjCkKeAO_1jJ07Ze2E3KHem0aNZ_Vwf080Yg-4Ujbw@mail.gmail.com>
Date:   Wed, 17 Apr 2019 19:36:21 +0800
From:   Zhaoyang Huang <huangzhaoyang@...il.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        David Rientjes <rientjes@...gle.com>,
        Zhaoyang Huang <zhaoyang.huang@...soc.com>,
        Roman Gushchin <guro@...com>, Jeff Layton <jlayton@...hat.com>,
        "open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [RFC PATCH] mm/workingset : judge file page activity via timestamp

sorry for the confusion. What I mean is the basic idea doesn't change
as replacing the refault criteria from refault_distance to timestamp.
But the detailed implementation changed a lot, including fix bugs,
update the way of packing the timestamp, 32bit/64bit differentiation
etc. So it makes sense for starting a new context.

On Wed, Apr 17, 2019 at 7:06 PM Michal Hocko <mhocko@...nel.org> wrote:
>
> On Wed 17-04-19 18:55:15, Zhaoyang Huang wrote:
> > fix one mailbox and update for some information
> >
> > Comparing to http://lkml.kernel.org/r/1554348617-12897-1-git-send-email-huangzhaoyang@gmail.com,
> > this commit fix the packing order error and add trace_printk for
> > reference debug information.
> >
> > For johannes's comments, please find bellowing for my feedback.
>
> OK, this suggests there is no strong reason to poset a new version of
> the patch then. Please do not fragment discussion and continue
> discussing in the original email thread until there is some conclusion
> reached.
>
> Thanks!
> --
> Michal Hocko
> SUSE Labs