linux-kernel - Re: [RFC PATCH v2] mm: Add nodes= arg to memory.reclaim

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Message-ID: <CAHS8izPdKG0aNbfLK8=oUdsSSZ95i1nCaKs+4s5Kx1vCHMEOWw@mail.gmail.com>
Date:   Wed, 30 Nov 2022 11:45:05 -0800
From:   Mina Almasry <almasrymina@...gle.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
Cc:     Huang Ying <ying.huang@...el.com>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        Yosry Ahmed <yosryahmed@...gle.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>, weixugc@...gle.com,
        shakeelb@...gle.com, gthelen@...gle.com, fvdl@...gle.com,
        Tejun Heo <tj@...nel.org>, Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Corbet <corbet@....net>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Muchun Song <songmuchun@...edance.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        cgroups@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC PATCH v2] mm: Add nodes= arg to memory.reclaim

On Wed, Nov 30, 2022 at 12:44 AM Bagas Sanjaya <bagasdotme@...il.com> wrote:
>
> On 11/30/22 09:03, Mina Almasry wrote:
> > -     This file accepts a single key, the number of bytes to reclaim.
> > -     No nested keys are currently supported.
> > +     This file accepts a string which contains the number of bytes to
> > +     reclaim.
> >
> Amount of memory to reclaim?
>

I want to have the word 'byte' in there somewhere to make that clear.
I guess maybe 'the amount of memory to reclaim in bytes'. Although as
written it seems more concise.

> > +     This file also allows the user to specify the nodes to reclaim from,
> > +     via the 'nodes=' key, example::
> > +
>
> "..., for example"
>

Will do in the next version. Thanks for taking a look, Bagas.

> > +       echo "1G nodes=0,1" > memory.reclaim
> > +
> > +     The above instructs the kernel to reclaim memory from nodes 0,1.
> > +
>
> Thanks.
>
> --
> An old man doll... just what I always wanted! - Clara
>