linux-kernel - Re: [PATCH] mm: memcontrol: remove the kmem states

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Message-ID: <YXbnW/cjgxXQOnpP@carbon.DHCP.thefacebook.com>
Date:   Mon, 25 Oct 2021 10:20:27 -0700
From:   Roman Gushchin <guro@...com>
To:     Muchun Song <songmuchun@...edance.com>
CC:     <akpm@...ux-foundation.org>, <mhocko@...nel.org>,
        <shakeelb@...gle.com>, <willy@...radead.org>, <hannes@...xchg.org>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: memcontrol: remove the kmem states

On Mon, Oct 25, 2021 at 08:52:59PM +0800, Muchun Song wrote:
> Now the kmem states is only used to indicate whether the kmem is
> offline. However, we can set ->kmemcg_id to -1 to indicate whether
> the kmem is offline. Finally, we can remove the kmem states to
> simplify the code.
> 
> Signed-off-by: Muchun Song <songmuchun@...edance.com>

Acked-by: Roman Gushchin <guro@...com>

Nice! These states made the code more complex without a good reason.

Thanks!